A Fluorescent Sensor of 3-Aminobenzeneboronic Acid Functionalized Hydrothermal Carbon Spheres for Facility Detection of L-tryptophan.

In the paper, hydrothermal carbon spheres (HTCs) are functionalized by the 3-aminobenzeneboronic acid (3-APBA) as a fluorescence sensor. The modification carbon spheres (3-APBA-HTCs) have shown excellent selectivity and sensitivity for efficient determination of L-tryptophan (L-Trp). The fluorescence sensor can selectively achieve the "On-Off" switchable functionality for L-Trp at an extremely low detection limit of 0.50 × 10- 5 mol/L.

2-[(Adamantan-1-yl)amino-meth-yl]-4-chloro-phenol hemihydrate.

In the title compound, C17H22ClNO·0.5H2O, the water mol-ecule O atom resides on a twofold rotation axis. In the organic mol-ecule, the phenol group forms an intra-molecular O-H⋯N hydrogen bond. In the crystal, pairs of organic mol-ecules are hydrogen bonded through bridging solvent water mol-ecules, forming chains along the b-axis direction.

Tris(2-amino-pyridinium) hexa-chlorido-indate(III).

The Schiff base (E)-4-chloro-2-[(pyridin-2-yl-imino)-meth-yl]phenol was reacted with InCl(3)·4H(2)O, generating the title molecular salt, (C(5)H(7)N(2))(3)[InCl(6)]. The octa-hedral hexa-chlorido-indate(III) anion is located on an inversion centre, and one half of the anion and two crystallographically independent cations form the asymmetric unit. One of the cations is located on a twofold rotation axis and its intra-ring C and N atoms simulate this symmetry by exchanging their positions in statistical disorder. In the crystal, weak N-H⋯Cl hydrogen bonds and two types of π-π interactions with centroid-centroid separations of 4.047 (3) and 4.202 (3) Šare observed.

Bis[N-(4-chloro-phen-yl)pyridine-3-carboxamide]-silver(I) nitrate.

In the title compound, [Ag(C(12)H(9)ClN(2)O)(2)]NO(3), two N atoms from two pyridine rings of two N-(4-chloro-phen-yl)pyridine-3-carboxamide ligands coordinate to the Ag(I) atom, forming a nearly linear geometry with an N-Ag-N angle of 173.41 (7)°. The crystal structure is stabilized by N-H⋯O, C-H⋯O and C-H⋯Cl hydrogen bonds and π-π stacking inter-actions [centroid-centroid distance = 3.5469 (16) Å] between the pyridyl and benzene rings. The shortest Ag⋯Ag distance is 3.2574 (5) Å.

Bis[4-(2-hydroxy-benzyl-amino)phen-yl] ether.

The title compound, C(26)H(24)N(2)O(3), was synthesized by reduction of the corresponding Schiff base. The mol-ecule does not possess crystallographic or non-crystallographic symmetry. The dihedral angle between the oxygen-bridged benzene rings is 67.98 (8)°. Both hydroxyl groups are involved in O-H⋯O intra-molecular hydrogen bonding. The mol-ecules are linked into a two-dimensional network parallel to the (010) plane by N-H⋯O hydrogen bonds.

Formation of a one-dimensional water chain containing two linking patterns of planar water tetramers.

The self-assembly of the title dinuclear complex, namely (mu-p-phenylenediamine-N,N,N',N'-tetraacetato)bis[aqua(1,10-phenanthroline)nickel(II)] dodecahydrate, [Ni(2)(C(14)H(12)N(2)O(8))(C(12)H(8)N(2))(2)(H(2)O)(2)].12H(2)O, through intricate noncovalent interactions results in a two-dimensional sheet-like structure. The dimer lies about an inversion centre at the centre of the p-phenylenediamine ring. Uncoordinated water molecules form one-dimensional chains in which cyclic water tetramers act as two types of building blocks. The water molecules play a significant role in the stabilization of the three-dimensional supramolecular framework. Intramolecular ;aryl-metal chelate ring' pi-pi interactions are also observed.

Mu1,1-azide-bridged ferromagnetic MnIII dimer with slow relaxation of magnetization.

A new end-on azide-bridged dimeric Mn(III) complex has been synthesized by using the tridentate N-isonicotinamidosalicylaidimine ligand. Magnetic studies show that the complex has a high-spin ground state of S = 4 and is ac out-of-phase frequency-dependent.

A novel one-dimensional complex: catena-poly[[manganese(III)-di-mu-2-[(2-hydroxyethyl)iminomethyl]phenolato-kappa2O1,N:kappaO2;kappaO2:kappa2O1] chloride].

In the title one-dimensional complex, [[Mn(III)(C9H10NO2)2]Cl]n, the Schiff base ligand 2-[(2-hydroxyethyl)iminomethyl]phenolate (Hsae-) functions as both a bridging and a chelating ligand. The Mn(III) ion is six-coordinated by two N and four O atoms from four different Hsae- ligands, yielding a distorted MnO4N2 octahedral environment. Each [Mn(III)(Hsae)2]+ cationic unit has the Mn atom on an inversion centre and each [Mn(III)(Hsae)2]+ cation lies about another inversion centre. The chain-like complex is further extended into a three-dimensional network structure through Cl...H-O hydrogen bonds and C-H...pi contacts involving the Hsae- rings.