Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 30
Filtrar
Mais filtros








Base de dados
Intervalo de ano de publicação
1.
Int J Mol Sci ; 21(21)2020 Oct 26.
Artigo em Inglês | MEDLINE | ID: mdl-33114482

RESUMO

Cardiogenic shock (CS) is a life-threatening emergency. New biomarkers are needed in order to detect patients at greater risk of adverse outcome. Our aim was to assess the characteristics of miR-21-5p, miR-122-5p, and miR-320a-3p in CS and evaluate the value of their expression levels in risk prediction. Circulating levels of miR-21-5p, miR-122-5p, and miR-320a-3p were measured from serial plasma samples of 179 patients during the first 5-10 days after detection of CS, derived from the CardShock study. Acute coronary syndrome was the most common cause (80%) of CS. Baseline (0 h) levels of miR-21-5p, miR-122-5p, and miR-320a-3p were all significantly elevated in nonsurvivors compared to survivors (p < 0.05 for all). Above median levels at 0h of each miRNA were each significantly associated with higher lactate and alanine aminotransferase levels and decreased glomerular filtration rates. After adjusting the multivariate regression analysis with established CS risk factors, miR-21-5p and miR-320a-3p levels above median at 0 h were independently associated with 90-day all-cause mortality (adjusted hazard ratio 1.8 (95% confidence interval 1.1-3.0), p = 0.018; adjusted hazard ratio 1.9 (95% confidence interval 1.2-3.2), p = 0.009, respectively). In conclusion, circulating plasma levels of miR-21-5p, miR-122-5p, and miR-320a-3p at baseline were all elevated in nonsurvivors of CS and associated with markers of hypoperfusion. Above median levels of miR-21-5p and miR-320a-3p at baseline appear to independently predict 90-day all-cause mortality. This indicates the potential of miRNAs as biomarkers for risk assessment in cardiogenic shock.


Assuntos
Síndrome Coronariana Aguda/epidemiologia , MicroRNAs/sangue , Choque Cardiogênico/mortalidade , Síndrome Coronariana Aguda/complicações , Síndrome Coronariana Aguda/genética , Síndrome Coronariana Aguda/mortalidade , Idoso , Biomarcadores/sangue , Feminino , Estudos de Associação Genética , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Choque Cardiogênico/genética , Análise de Sobrevida , Regulação para Cima
2.
Sci Rep ; 10(1): 14465, 2020 09 02.
Artigo em Inglês | MEDLINE | ID: mdl-32879335

RESUMO

It is much debated whether the direct effects of weather or biotic interactions determine species' responses to climate change. For example, an important biotic factor for herbivores in northern ecosystems is the availability of winter food. If the food availability changes because of the changing climate, it likely has major impact on the abundance of herbivores. To evaluate this, we need to know the relative roles of weather and biotic interactions, such as food availability and risk of predation, for the species. Here, we utilize long-term data on nest-box occupancy by Siberian flying squirrels (Pteromys volans) in Finland during 2002-2018. We built binary models with nest-box occupancy in different seasons as a response variable. Weather, winter food (tree mast), and predator presence (the Ural owl, Strix uralensis) modified seasonal nest-box occupancy patterns of the flying squirrel. However, the effect of weather was only important in the summer. The negative effect of predators was clear for adults but, surprisingly, not for overwinter survival of apparent juveniles. Considering the relative importance of different factors, winter food availability had a clear positive effect in each season. Our study supports the view that the effects of climate change mediate through multiple biotic interactions. In forest ecosystems, responses of masting trees to weather likely play an important role in species responses to climate change.

3.
ACS Omega ; 4(7): 12012-12017, 2019 Jul 31.
Artigo em Inglês | MEDLINE | ID: mdl-31460313

RESUMO

Three-dimensional selective laser sintering printing was utilized to produce porous, solid objects, in which the catalytically active component, Pd/SiO2, is attached to an easily printable supporting polypropylene framework. Physical properties of the printed objects, such as porosity, were controlled by varying the printing parameters. Structural characterization of the objects was performed by helium ion microscopy, scanning electron microscopy, and X-ray tomography, and the catalytic performance of the objects was tested in the hydrogenation of styrene, cyclohexene, and phenylacetylene. The results show that the selective laser sintering process provides an alternative and effective way to produce highly active and easily reusable heterogeneous catalysts without significantly reducing the catalytic efficiency of the active Pd/SiO2 component. The ability to control the size, porosity, mechanical properties, flow properties, physical properties, and chemical properties of the catalyst objects opens up possibilities to optimize devices for different reaction environments including batch reactions and continuous flow systems.

4.
Chem Commun (Camb) ; 55(61): 8927-8930, 2019 Aug 07.
Artigo em Inglês | MEDLINE | ID: mdl-31268438

RESUMO

Four-fold aryl substituted o-carborane derivatives with defined patterns of substitution at the antipodal region of the cluster carbon atoms have been achieved. It is proven that this region is congested but lacks steric hindrance. Also, the two antipodal sites Cc-Cc and B9-B12 are affected very distinctly by electron donor substituents.

5.
Chem Commun (Camb) ; 54(58): 8024-8031, 2018 Jul 17.
Artigo em Inglês | MEDLINE | ID: mdl-29938289

RESUMO

Origins of stereoselectivity in ROP of racemic chiral cyclic esters promoted by achiral yttrium complexes, resulting in the formation of highly heterotactic polylactide, and highly syndiotactic or, more uniquely, highly isotactic poly(3-hydroxybutyrate)s, are discussed. A close interplay between the nature of the cyclic ester, most particularly of the exocyclic functional chain installed on the chiral center of ß-lactones, and the ortho-substituents installed on the phenolate rings of the ligand, results in various determining secondary interactions of steric and also electronic nature.

6.
Inorg Chem ; 57(7): 3683-3698, 2018 Apr 02.
Artigo em Inglês | MEDLINE | ID: mdl-29565579

RESUMO

A family of MnIIILnIII strictly dinuclear complexes of general formula [MnIII(µ-L)(µ-OMe)(NO3)LnIII(NO3)2(MeOH)] (LnIII = Gd, Dy, Er, Ho) has been assembled in a one pot synthesis from a polydentate, multipocket aminobis(phenol)ligand [6,6'-{(2-(1-morpholyl)ethylazanediyl)bis(methylene)}bis(2-methoxy-4-methylphenol)], Mn(NO3)2·4H2O, Ln(NO3)3· nH2O, and NEt3 in MeOH. These compounds represent the first examples of fully structurally and magnetically characterized dinuclear MnIIILnIII complexes. Single X-ray diffraction studies reveal that all complexes are isostructural, consisting of neutral dinuclear molecules where the MnIII and LnIII metal ions, which exhibit distorted octahedral MnN2O4 and distorted LnO9 coordination spheres, are linked by phenoxide/methoxide double bridging groups. Static magnetic studies show that the MnIIIGdIII derivative exhibits a weak antiferromagnetic interaction between the metal ions, with a negative axial zero-field splitting D parameter. The MnIIIGdIII complex shows a notable magnetocaloric effect with magnetic entropy change at 5 T and 3 K of -Δ Sm = 16.8 J kg-1 K-1. Theoretical studies were performed to support the sign and magnitude of the magnetic anisotropy of the MnIII ion ( ab initio), to predict the value and nature of JMnGd, to disclose the mechanism of magnetic coupling, and to establish magneto-structural correlations (DFT calculations). The results of these calculations are corroborated by quantum theory of atoms in molecule analysis (QTAIM). Finally, MnIII-DyIII and MnIII-ErIII complexes show field-induced slow relaxation of the magnetization but without reaching a maximum above 2 K in the out-of-phase ac susceptibility. Ab initio calculations were also performed on MnIII-DyIII/HoIII systems to unravel the origin behind the weak SMM characteristics of the molecules possessing two strongly anisotropic ions. The mechanism of magnetic relaxation was developed, revealing a large QTM/tunnel splitting at the single-ion level. Furthermore, the anisotropy axes of the MnIII and LnIII ions were calculated to be noncollinear, leading to reduction of the overall anisotropy in the molecules. Hence, the herein reported complexes demonstrate that a combination of two anisotropic metal ions does not guarantee SMM behavior.

7.
Eur J Pharmacol ; 818: 57-66, 2018 Jan 05.
Artigo em Inglês | MEDLINE | ID: mdl-29055786

RESUMO

Carbon monoxide (CO), produced by heme oxygenase-1 (HO-1), is an endogenous paracrine factor involved in the regulation of cardiovascular structure and function. We studied the effects of a synthetic CO releasing molecule (CORM-3) on cardiac recovery and myocardial microRNA expression after myocardial infarction (MI). Male Wistar rats with MI (n = 75) or sham-operated controls (n = 75) were treated from day 4 to day 14 after MI either with synthetic CORM-3 or with inactive iCORM and killed 2, 4 or 8 weeks post-MI. Infarct size, vascular and capillary densities, the amount of cardiomyocytes in the infarct area, and cardiomyocyte proliferation and apoptosis were determined. PCR was used for microRNA and mRNA quantification, western blotting to evaluate protein expression and echocardiography to assess cardiac structure and function. CORM-3 treatment increased vascular density (P< 0.05 vs. iCORM) and the proportion of cardiomyocytes (P< 0.05 vs. iCORM) in the infarct area. Ejection fraction improved (P< 0.05) and left ventricular volumes decreased (P< 0.05) in CORM-3 treated MI groups compared to iCORM treatment. CORM-3 treatment decreased the amount of proliferating Ki67 positive cardiomyocytes in the infarct/border area at week 2 after MI compared to iCORM treatment, whereas the amount of apoptotic cardiomyocytes did not differ between CORM-3 and iCORM groups. Compared to iCORM treatment, CORM-3 decreased expression on miR-206 in the remote area at week 2 after MI. The CO releasing molecule CORM-3 improved structural and functional cardiac recovery after MI. Modulation of HO-1-CO axis may prove novel drug targets to facilitate cardiac recovery after myocardial injury.


Assuntos
Traumatismos Cardíacos/fisiopatologia , Coração/efeitos dos fármacos , Coração/fisiopatologia , Compostos Organometálicos/farmacologia , Recuperação de Função Fisiológica/efeitos dos fármacos , Animais , Apoptose/efeitos dos fármacos , Peso Corporal/efeitos dos fármacos , Capilares/efeitos dos fármacos , Capilares/metabolismo , Proliferação de Células/efeitos dos fármacos , Fibrose , Traumatismos Cardíacos/metabolismo , Traumatismos Cardíacos/patologia , Masculino , Miócitos Cardíacos/efeitos dos fármacos , Miócitos Cardíacos/patologia , Tamanho do Órgão/efeitos dos fármacos , Ratos , Ratos Wistar
8.
Angew Chem Int Ed Engl ; 56(35): 10388-10393, 2017 08 21.
Artigo em Inglês | MEDLINE | ID: mdl-28666071

RESUMO

Reported herein is the first stereoselective controlled ROP of a specific family of racemic functional ß-lactones, namely 4-alkoxymethylene-ß-propiolactones (BPLOR s). This process is catalyzed by an yttrium complex stabilized by a nonchiral tetradentate amino alkoxy bisphenolate ligand {ONOOR'2 }2- , which features both a good activity and a high degree of control over the molar masses of the resulting functional poly(3-hydroxyalkanoate)s. A simple modification of the R' substituents in ortho and para position on the ligand platform allows for a complete reversal from virtually pure syndioselectivity (Ps up to 0.91 with R'=cumyl) to very high isoselectivity (Pi up to 0.93 with R'=Cl), as supported by DFT insights. This is the first example of a highly isoselective ROP of a racemic chiral ß-lactone.

9.
Dalton Trans ; 46(30): 9740-9744, 2017 Aug 14.
Artigo em Inglês | MEDLINE | ID: mdl-28513747

RESUMO

The solid and solution state structure of the vanadium(ii) N-heterocyclic silylene (NHSi) complex, [(SiIPr)V(Cp)2] (1) is reported (SiIPr: 1,3-bis(2,6-diisopropylphenyl)-1,3-diaza-2-silacyclopent-4-en-2-ylidene). The electronic structure of 1 is probed using a combination of magnetic measurements, EPR spectroscopy and computational studies. The V-Si bond strength and complex forming mechanism between vanadocene and an NHSi ligand is elucidated using computational methods.

10.
Dalton Trans ; 45(28): 11301-5, 2016 Jul 28.
Artigo em Inglês | MEDLINE | ID: mdl-27362948

RESUMO

The structural and bonding properties of a three-coordinate N-heterocyclic silyene (NHSi) complex of the iron(ii) amide [Fe{N(SiMe3)2}2] are reported. Computational studies reveal that dispersion forces between the amido SiMe3 substituents and the isopropyl substituents on the NHSi ligand significantly enhance the stability of the complex, along with Fe-to-Si π-backbonding.

11.
Chem Commun (Camb) ; 52(3): 586-9, 2016 Jan 11.
Artigo em Inglês | MEDLINE | ID: mdl-26548928

RESUMO

Rhodium(I) alkene complexes of an NNN-pincer ligand catalyze the hydrogenation of alkenes, including ethylene. The terminal or resting state of the catalyst, which exhibits an unprecedentedly upfield Rh-hydride (1)H NMR chemical shift, has been isolated and a synthetic cycle for regenerating the catalytically active species has been established.

12.
Inorg Chem ; 53(22): 12092-9, 2014 Nov 17.
Artigo em Inglês | MEDLINE | ID: mdl-25350578

RESUMO

New types of linear tetranuclear Ln(III)-Ni(II)-Ni(II)-Ln(III) (Ln(III) = Dy (1), Gd (2)) complexes have been prepared using the multidentate ligand N,N'-bis(3-methoxysalicylidene)-1,3-diaminobenzene, which has two sets of NO and OO' coordination pockets that are able to selectively accommodate Ni(II) and Ln(III) ions, respectively. The X-ray structure analysis reveals that the Ni(II) ions are bridged by phenylenediimine groups forming a 12-membered metallacycle in the central body of the complex, whereas the Ln(III) ions are located at both sides of the metallacycle and linked to the Ni(II) ions by diphenoxo bridging groups. Phenylenediimine and diphenoxo bridging groups transmit ferromagnetic exchange interactions between the two Ni(II) ions and between the Ni(II) and the Ln(III) ions, respectively. Complex 1 shows slow relaxation of the magnetization at zero field and a thermal energy barrier Ueff = 7.4 K with HDC = 1000 Oe, whereas complex 2 exhibits an S = 9 ground state and significant magnetocaloric effect (-ΔSm = 18.5 J kg(-1) K(-1) at T = 3 K and ΔB = 5 T).

13.
Chemistry ; 20(48): 15808-15, 2014 Nov 24.
Artigo em Inglês | MEDLINE | ID: mdl-25294752

RESUMO

This paper presents a novel and unique feature of metallacarboranes, consisting of the linkage of this redox electro-active site to a stretchable polymer. This is based on polyTHF, a known and applied material. This hybrid material has the two ends functionalized: one with the aforementioned redox molecule and the other with a terminal OH group, both linked by a molecular spring. Moreover, the redox electro-active molecules can be synthesized with either cobalt (cobaltabisdicarbollide) or with iron (ferrabisdicarbollide), species whose respective E(1/2) value differs by almost 1 V. The polymerization mechanism, based on an intermediate molecular crystal structure, is explained through an unexpected cyclization process of the dioxanate derivative of the metallacarboranes with an additional THF molecule. This is achieved in the absence of any metal or external electrophile. Surface functionalization of a Pt electrode by the electropolymerization of pyrrole doped with the pristine metallacarboranes and with the polyTHF hybrid materials is reported in this paper.

14.
Chemistry ; 20(27): 8410-20, 2014 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-24890335

RESUMO

Two series of isostructural C(3)-symmetric Ln(3) complexes Ln(3)⋅[BPh(4)] and Ln(3)⋅0.33[Ln(NO(3))(6)] (in which Ln(III) =Gd and Dy) have been prepared from an amino-bis(phenol) ligand. X-ray studies reveal that Ln(III) ions are connected by one µ(2)-phenoxo and two µ(3)-methoxo bridges, thus leading to a hexagonal bipyramidal Ln(3)O(5) bridging core in which Ln(III) ions exhibit a biaugmented trigonal-prismatic geometry. Magnetic susceptibility studies and ab initio complete active space self-consistent field (CASSCF) calculations indicate that the magnetic coupling between the Dy(III) ions, which possess a high axial anisotropy in the ground state, is very weakly antiferromagnetic and mainly dipolar in nature. To reduce the electronic repulsion from the coordinating oxygen atom with the shortest Dy-O distance, the local magnetic moments are oriented almost perpendicular to the Dy(3) plane, thus leading to a paramagnetic ground state. CASSCF plus restricted active space state interaction (RASSI) calculations also show that the ground and first excited state of the Dy(III) ions are separated by approximately 150 and 177 cm(-1), for Dy(3)⋅[BPh(4)] and Dy(3)⋅0.33[Dy(NO(3))(6)], respectively. As expected for these large energy gaps, Dy(3)⋅[BPh(4)] and Dy(3)⋅0.33[Dy(NO(3)(6)] exhibit, under zero direct-current (dc) field, thermally activated slow relaxation of the magnetization, which overlap with a quantum tunneling relaxation process. Under an applied Hdc field of 1000 Oe, Dy(3)⋅[BPh(4)] exhibits two thermally activated processes with U(eff) values of 34.7 and 19.5 cm(-1), whereas Dy(3)⋅0.33[Dy(NO(3))(6)] shows only one activated process with Ueff =19.5 cm(-1).

15.
Dalton Trans ; 43(28): 10739-50, 2014 Jul 28.
Artigo em Inglês | MEDLINE | ID: mdl-24827468

RESUMO

The pyrrole-based ligand N,N'-((1H-pyrrole-2,5-diyl)bis(diphenylphosphoranylylidene))bis(4-isopropylaniline) (HL(B)) can be deprotonated and coordinated to yttrium and samarium ions upon reaction with their respective trialkyl precursors. In the case of yttrium, the resulting complex [L(B)Y(CH2SiMe3)2] (1) is a Lewis base-free monomer that is remarkably resistant to cyclometalation. Conversely, the analogous samarium complex [L(B)Sm(CH2SiMe3)2] is dramatically more reactive and undergoes rapid orthometalation of one phosphinimine aryl substituent, generating an unusual 4-membered azasamaracyclic THF adduct [κ(4)-L(B)Sm(CH2SiMe3)(THF)2] (2). This species undergoes further transformation in solution to generate a new dinuclear species that features unique carbon and nitrogen bridging units [κ(1):κ(2):µ(2)-L(B)Sm(THF)]2 (3). Alternatively, if 2 is intercepted by a second equivalent of HL(B), the doubly-ligated samarium complex [(κ(4)-L(B))L(B)Sm] (4) forms.

16.
Chemistry ; 20(22): 6786-94, 2014 May 26.
Artigo em Inglês | MEDLINE | ID: mdl-24737689

RESUMO

The anion [3,3'-Co(C2B9H11)2](-) ([COSAN](-)) produces aggregates in water. These aggregates are interpreted to be the result of C-H⋅⋅⋅H-B interactions. It is possible to generate aggregates even after the incorporation of additional functional groups into the [COSAN](-) units. The approach is to join two [COSAN](-) anions by a linker that can adapt itself to act as a crown ether. The linker has been chosen to have six oxygen atoms, which is the ideal number for K(+) selectivity in crown ethers. The linker binds the alkaline metal ions with different affinities; thus showing a distinct degree of selectivity. The highest affinity is shown towards K(+) from a mixture containing Li(+), Na(+), K(+), Rb(+) and Cs(+); this can be indicative of pseudo-crown ether performance of the dumbbell. One interesting possibility is that the [COSAN](-) anions at the two ends of the linker can act as a hook-and-loop fastener to close the ring. This facet is intriguing and deserves further consideration for possible applications. The distinct affinity towards alkaline metal ions is corroborated by solubility studies and isothermal calorimetry thermograms. Furthermore, cryoTEM micrographs, along with light scattering results, reveal the existence of small self-assemblies and compact nanostructures ranging from spheres to single-/multi-layer vesicles in aqueous solutions. The studies reported herein show that these dumbbells can have different appearances, either as molecules or aggregates, in water or lipophilic phases; this offers a distinct model as drug carriers.

17.
Inorg Chem ; 53(1): 33-5, 2014 Jan 06.
Artigo em Inglês | MEDLINE | ID: mdl-24328150

RESUMO

A neutral air- and moisture-stable N,N'-chelating radical ligand, 1-phenyl-3-(pyrid-2-yl)benzo[e][1,2,4]triazinyl (1) was synthesized and characterized by electron paramagnetic resonance spectroscopy, X-ray crystallography, and magnetic measurements. Subsequent reaction of 1 with Cu(hfac)2·2H2O (hfac = hexafluoroacetylacetonate) under ambient conditions afforded the coordination complex Cu(1)(hfac)2 in which the radical binds to the metal in a bidentate fashion. Magnetic susceptibility data collected from 1.8 to 300 K indicate a strong ferromagnetic metal-radical interaction in the complex and weak antiferromagnetic radical···radical interactions between the Cu(1)(hfac)2 units. Detailed computational investigations support this assignment. Radical 1 is a new addition to the growing library of 1,2,4-triazinyl radicals and the first member of this family of paramagnetic species synthesized specifically for coordination purposes.

18.
Molecules ; 18(12): 15080-93, 2013 Dec 06.
Artigo em Inglês | MEDLINE | ID: mdl-24322492

RESUMO

Ethyl 2,3-diendo-3-aminobicyclo[2.2.2]oct-5-ene-2-carboxylate ((±)-1) was resolved with O,O'-dibenzoyltartaric acid via diastereomeric salt formation. The efficient synthesis of the enantiomers of 2,3-diendo-3-aminobicyclo[2.2.2]oct-5-ene-2-carboxylic acid ((+)-7 and (-)-7), 3-endo-aminobicyclo[2.2.2]oct-5-ene-2-exo-carboxylic acid ((+)-5 and (-)-5), cis- and trans-3-aminobicyclo[2.2.2]octane-2-carboxylic acid ((+)-6, (-)-6, (+)-8 and (-)-8) was achieved via isomerization, hydrogenation and hydrolysis of the corresponding esters (-)-1 and (+)-1. The stereochemistry and relative configurations of the synthesized compounds were determined by NMR spectroscopy (based on the 3J(H,H) coupling constants) and X-ray crystallography.


Assuntos
Ácidos Carboxílicos/síntese química , Ácidos Carboxílicos/química , Ésteres , Estrutura Molecular , Ressonância Magnética Nuclear Biomolecular
19.
Acta Crystallogr C ; 69(Pt 5): 509-12, 2013 May.
Artigo em Inglês | MEDLINE | ID: mdl-23629903

RESUMO

The title cocrystal contains two chiral conformational diastereomers, viz. (1S,2R,RN)- and (1S,2R,SN)-, of [2,4-di-tert-butyl-6-{[(1-oxido-1-phenylpropan-2-yl)(methyl)amino]methyl}phenolato](methanol)-cis-dioxidomolybdenum(VI), [Mo(C25H35NO2)O2(CH3OH)], representing the first example of a structurally characterized molybdenum complex with enantiomerically pure ephedrine derivative ligands. The Mo(VI) cations exhibit differently distorted octahedral coordination environments, with two oxide ligands positioned cis to each other. The remainder of the coordination comprises phenoxide, alkoxide and methanol O atoms, with an amine N atom completing the octahedron. The distinct complexes are linked by strong intermolecular O-H···O hydrogen bonds, resulting in one-dimensional molecular chains. Furthermore, the phenyl rings are involved in weak T-shaped/edge-to-face π-π interactions with each other.


Assuntos
Complexos de Coordenação/química , Efedrina/química , Molibdênio/química , Cristalografia por Raios X , Ligação de Hidrogênio , Ligantes , Conformação Molecular , Estereoisomerismo
20.
Inorg Chem ; 52(10): 5714-21, 2013 May 20.
Artigo em Inglês | MEDLINE | ID: mdl-23627918

RESUMO

The syntheses, crystallographic structures, magnetic properties, and theoretical studies of two heptacoordinated molybdenum complexes with N,N'-bis(3,5-di-tert-butyl-2-hydroxyphenyl)-1,2-phenylenediamine (H4N2O2) are reported. A formally molybdenum(VI) complex [Mo(N2O2)Cl2(dmf)] (1) was synthesized by the reaction between [MoO2Cl2(dmf)2] and H4N2O2, whereas the other molybdenum(VI) complex [Mo(N2O2)(HN2O2)] (2) was formed when [MoO2(acac)2] was used as a molybdenum source. Both complexes represent a rare case of the Mo(VI) ion without any multiply bonded terminal ligands. In addition, molecular structures, magnetic measurements, ESR spectroscopy, and density functional theory calculations indicate that complex 2 is the first stable molybdenum(VI) amidophenoxide radical.


Assuntos
Molibdênio/química , Compostos Organometálicos/química , Fenóis/química , Fenilenodiaminas/química , Cristalografia por Raios X , Radicais Livres/síntese química , Radicais Livres/química , Modelos Moleculares , Conformação Molecular , Compostos Organometálicos/síntese química , Teoria Quântica
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA