RESUMEN
More usually thought of as a base, the sodium zincate [(TMEDA)·Na(µ-TMP)(µ-(t)Bu)Zn((t)Bu)] 1 can undergo single electron transfer with TEMPO to give [(TMEDA)·Na(µ-TMP)(µ-TEMPO(-))Zn((t)Bu)] 2 and [(TMEDA)·Na(µ-TEMPO(-))(2)Zn((t)Bu)] 3; and with chalcone [PhCOCH=CHPh] gives [{(TMEDA)·Na(µ-TMP)Zn((t)Bu)}(2)(µ-OCPhCH=CHPhCHPhCH=CPh-µ-O)] which contains two chalcone units C-C coupled though their benzylic C atoms.
Asunto(s)
Chalcona/química , Óxidos N-Cíclicos/química , Compuestos Organometálicos/química , Sodio/química , Zinc/química , Transporte de Electrón , Estructura MolecularRESUMEN
The metallation reaction between dibutylmagnesium and 2,6-diisopropyl-N-(trimethylsilyl)aniline gives the unusual monomeric three-coordinate complex (diethyl ether-kappa O)bis[2,6-diisopropyl-N-(trimethylsilyl)anilido-kappa N]magnesium(II), [Mg(C(15)H(26)NSi)(2)(C(4)H(10)O)] or [Mg[(Me(3)Si)(2,6-(i)Pr(2)C(6)H(3))N](2)(Et(2)O)]. This low-coordinate species has a distorted trigonal-planar coordination environment, with an additional short Mg-C(ipso) contact of 2.799 (2) A.
RESUMEN
The title complex, [ZrCl2(C4H8O)2(C14H14N)2].0.5C7H8, was prepared in an unusual manner by utilizing [Mg[N(CH2Ph)2]2] as a ligand transfer reagent. The Zr atom lies in a distorted octahedral environment where steric repulsion from the large dibenzylamino ligands leads to a widening of the N-Zr-N angle [99.95 (9) degrees ] and corresponding compression of other angles [Cl-Zr-Cl 160.95 (3) degrees and O-Zr-O 78.22 (7) degrees ]. This distortion is compared with those found in the previously determined structures of the dimethylamino and diethylamino analogues.
RESUMEN
Three prototypes of the remarkable new class of compound referred to in the title have been synthesised by treating ferrocene with the same mixed lithium (or sodium)-magnesium amide recipes as those used previously to make s-block metal inverse crowns.