Bis(μ-oxo)dicopper(III) Complexes of a Homologous Series of Simple Peralkylated 1,2-Diamines: Steric Modulation of Structure, Stability, and Reactivity
作者:Adam P. Cole、Viswanath Mahadevan、Liviu M. Mirica、Xavier Ottenwaelder、T. Daniel P. Stack
DOI:10.1021/ic050331i
日期:2005.10.1
diamagnetic bis(mu-oxo)dicopper(III) core. The intense ligand-to-metal charge transfer absorption maxima of CD-based Os are red-shifted proportionally with increasing peripheral ligand bulk, an effect ascribed to a slight distortion of the [Cu2O2] rhomb. The well-ordered crystal structure of [(L(ME))2Cu2(mu-O)2](CF3SO3)2.4CH2Cl2 ([3b. 4CH2Cl2]) features the most metrically compact [Cu2O2]2+ core among structurally
Hoffmann, Reinhard W.; Klute, Wolfgang; Dress, Ruprecht K., Journal of the Chemical Society. Perkin transactions II, 1995, # 9, p. 1721 - 1726
作者:Hoffmann, Reinhard W.、Klute, Wolfgang、Dress, Ruprecht K.、Wenzel, Andreas
DOI:——
日期:——
Simple is best: Diamine zinc complexes as unexpected catalysts in lactide polymerisation
作者:Prisca K. Eckert、Ines dos Santos Vieira、Viktoria H. Gessner、Janna Börner、Carsten Strohmann、Sonja Herres-Pawlis
DOI:10.1016/j.poly.2012.09.012
日期:2013.1
A series of monomeric coordination compounds containing zinc(II) chloride or zinc(II) bromide and the 1,2-diamine ligands TMEDA, TEEDA, (R,R)-TMCDA, (R,R)-TECDA and cis-TMCDA have been synthesised and structurally characterised using X-ray diffraction analysis. All but one complex could be successfully used as initiators for the solvent-free ring-opening polymerisation of D,L-lactide. In particular, the polylactide (PLA) prepared with compounds containing (R,R)-TECDA is obtainable in high yields with molecular weights suitable for industrial applications. Thus a class of stable, easy to synthesise and efficient PLA catalysts with neutral ligands is introduced. (c) 2012 Elsevier Ltd. All rights reserved.
COLLAGEN IMAGING COMPOSTIONS
申请人:Collagen Medical, LLC
公开号:US20160376319A1
公开(公告)日:2016-12-29
Compounds and methods for imaging and/or assessing collagen are described. The compounds can include collagen binding peptides.
Isopropyllithium diamine adducts: from a non symmetric aggregate to monomeric i-PrLi·(1R,2R)-N,N,N′,N′-tetraethylcyclohexane-1,2-diamine
作者:Carsten Strohmann、Viktoria H. Gessner、A. Damme
DOI:10.1039/b804855j
日期:——
By means of isopropyllithiumcrystalstructures, the transition from dimeric (i-PrLi.TMEDA)2 (4) to monomeric i-PrLi.(R,R)-TECDA (6) via the non-symmetric aggregate [(i-PrLi)3.(TEEDA)2] (5) is shown, depending on the steric demand of the ligand.