The synthesis of 3,4-ethylene-bridged 1,1,2,5-tetrasubstituted biguanides is reported, which are accessible by three alternative routes. Exemplary molecular structures of the ligand and an observed side product have been elucidated by X-ray diffraction analysis. Mono- and dinuclear complexes of the biguanide in both its neutral and monoanionic forms were obtained, including examples of aluminum, copper
Enhanced Anion Binding from Unusual Coordination Modes of Bis(thiourea) Ligands in Platinum Group Metal Complexes
作者:M. Laura Soriano、Joseph T. Lenthall、Kirsty M. Anderson、Stephen J. Smith、Jonathan W. Steed
DOI:10.1002/chem.201001354
日期:2010.9.17
exhibit unusual ligand binding modes and significantly enhancedanion binding ability. The ruthenium(II) complex [Ru(η6‐p‐cymene)(κS,S′,N‐L3−H)]+ (2 b) possesses juxtaposed four‐ and seven‐membered chelate rings and binds anions as both 1:1 and 2:1 host guest complexes. The pyridyl bis(thiourea) complex [Ru(η6‐p‐cymeme)(κS,S′,Npy‐L4)]2+ (4) binds anions in both 1:1 and 1:2 species, whereas the free ligand
用惰性有机金属过渡金属离子处理一系列双(硫脲)配体可得到许多新颖的配合物,这些配合物表现出不同寻常的配体结合模式并显着增强了阴离子结合能力。钌(II)配合物的[Ru(η 6 - p -cymene)(κ小号,小号',N-大号3 -H)+(2 B)具有并列四和7元螯合环和所结合的阴离子如1:1和2:1主机来宾复合体。吡啶基双(硫脲)络合物的[Ru(η 6 - p -cymeme)(κ小号,小号',Ñ吡啶-大号4)] 2+(4)结合1:1和1:2两种阴离子,而游离配体由于分子内NH⋅⋅⋅N氢键作用而无效。还报道了具有九元和十元螯合环的新型钯(II)配合物。
Ghosh, Journal of the Indian Chemical Society, 1933, vol. 10, p. 583,588
作者:Ghosh
DOI:——
日期:——
US7351389B2
申请人:——
公开号:US7351389B2
公开(公告)日:2008-04-01
Evaluation of thioamides, thiolactams and thioureas as hydrogen sulfide (H2S) donors for lowering blood pressure
Hydrogen sulfide (H2S) is a biologically important gaseous molecule that exhibits promising protective effects against a variety of pathological processes. For example, it was recognized as a blood pressure lowering agent. Aligned with the need for easily modifiable platforms for the H2S supply, we report here the preparation and the H2S release kinetics from a series of structurally diversified thioamides