On the electronic structure and spectroscopic properties of d8-metal mixed-ligand complexes with S/O-donor and N-acceptor ligands
作者:Roland Benedix、Horst Hennig
DOI:10.1016/s0020-1693(00)86369-0
日期:1988.1
discussion an interligand charge-transfer from the donor to the acceptor site has been found. The dependence of the interligand charge-transfer band on the energies of the acceptor and the donor niveau is investigated, resulting in a maximum spectral shift of Δ v =6480 cm −1 for [Ni(mnt) N,N ] mixed-ligand complexes, where mnt=maleonitriledithiolate and N,N =aliphatic or aromatic diimines.
摘要通过定性的MO考虑,研究了具有硫或氧供体配体(二硫醇盐和儿茶酚盐)和α-二亚胺型氮受体配体的d 8-金属混合配体配合物的结构和光谱性质。尽管HOMO主要位于仅具有少量金属贡献的硫配体上,但LUMO仅位于二亚胺上。作为讨论中的配合物的特性,已经发现了从供体到受体位点的配体电荷转移。研究了配体电荷转移带对受体和供体niveau能量的依赖性,导致[Ni(mnt)N,N]混合配体络合物的最大光谱位移为Δv = 6480 cm -1 ,其中mnt =马来腈三硫代磺酸盐,N,N =脂族或芳族二亚胺。
Redox Behavior of Rhodium 9,10-Phenanthrenediimine Complexes
作者:David W. Shaffer、Scott A. Ryken、Ryan A. Zarkesh、Alan F. Heyduk
DOI:10.1021/ic1007632
日期:2011.1.3
New square-planar rhodium complexes of the redox-active ligand 9,10-phenenthrenediimine (phdi) have been prepared and studied. The complexes [dpp-nacnacCH3]Rh(phdi) (2a; [dpp-nacnacCH3]− = CH[C(Me)(N-iPr2C6H3)]2−) and [dpp-nacnacCF3]Rh(phdi) (2b; [dpp-nacnacCF3]− = CH[C(CF3)(N-iPr2C6H3)]2−) have been prepared from the corresponding [nacnac]Rh(CO)2 synthons by treatment with Me3NO in the presence of
Displacement assay for detecting ligate-ligand association events
申请人:Hartwich Gerhard
公开号:US20060275756A1
公开(公告)日:2006-12-07
Described is a method for detection of ligate-ligand association events, the method comprising the steps: providing a modified surface, the modification consisting in the attachment of at least one type of ligate; providing signal ligands; providing a sample having ligands; bringing a defined quantity of the signal ligands into contact with the modified surface and bringing the sample into contact with the modified surface; detecting the signal ligands; and comparing with reference values the values obtained from the detection of the signal ligands.
[EN] SYNTHESIS OF 2-ALKYLCYSTEINES, 2-(HYDROXYLATED PHENYL)-4-ALKYLTHIAZOLINE-4-CARBOXYLIC ACIDS AND DERIVATIVES THEREOF<br/>[FR] SYNTHESE DES ACIDES 2-ALKYLCYSTEINES, 2-(PHENYLE HYDROXYLE)-4-ALKYLTHIAZOLINE-4-CARBOXYLIQUES ET DE LEURS DERIVES
申请人:GENZYME CORP
公开号:WO2003097622A2
公开(公告)日:2003-11-27
The present invention provides methods of preparing 2-alkylcysteine derivatives, many of which can be performed stereoselectively. The present invention also discloses a method of preparing a class of iron chelating agents related to desferrithiocin, all of which contain a thiazoline ring. An example of these iron chelating agents are 4,5-dihydro-2-(2,4-dihydroxyphenyl)-4-alkyl-thiazole-4-carboxylic acids, such as 4,5-dihydro-2-(2,4-dihydroxyphenyl)-4-methyl-thiazole-4-carboxylic acid.
A method of preparing a 2-alkyl amino acid involves the aziridination of an alkylacrylate and the opening of the aziridine ring by addition of a side chain. This method can result in the preparation of enantiomeric excess of a 2-alkyl amino acid. The invention also discloses a method of preparing a class of iron chelating agents related to desferrithiocin, all of which contain a thiazoline ring. In this method, an aryl nitrile or imidate is condensed with cysteine, a 2-alkyl cysteine, or a cysteine ester.