Coordination isomerism in N-heterocyclic phosphenium thiocyanates
نویسندگان
چکیده
منابع مشابه
Unexpected coordination difference in geometric-isomerism between N,S- and N,N-heterocyclic carbenes in cyclometallated platinum(ii).
The reaction of [Pt(II)(2-phenylpyridine)(acac)] and benzothiazolium bromide yields the N,S-heterocyclic carbene ligand trans to pyridyl while, surprisingly, a very similar N,N-heterocyclic carbene coordinates predominantly trans to the cyclometallated carbon.
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A chelating diphosphine ligand with a central N-heterocyclic phosphenium cation (NHP(+)) has been used to explore the coordination chemistry of NHPs with nickel. Treatment of the chlorophosphine precursor [PPP]Cl (1) with stoichiometric Ni(COD)2 affords (PPP)NiCl (8), which is best described as a Ni(II)/NHP(-) phosphido complex formed via oxidative addition of the P-Cl bond. In contrast, treati...
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Four different NHC ligands have been coordinated to Pt(II) centres; for the first time cyclometallation of the NHC ligand was observed, but only when the platinum centre had a DMSO and two methyl co-ligands. Cyclometallation resulted in the exclusive formation of five-membered rings, and the absence of any double cyclometallation reactions with appropriate ligands rules out the possibility of a...
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The preparation of rhenium based octahedral clusters containing N-heterocyclic carbenes is described. These represent the first examples of [M6(μ3-Q)8](n+) or [M6(μ3-X)8](n+) clusters to contain a carbene ligand of any type (NHC, Fischer or Schrock). Surprisingly, the NHC ligands attenuate their luminescent properties.
متن کاملOn the bonding isomerism in three-co-ordinated copper(I) thiocyanates
Density functional theory (DFT) and ab initio MP2 methods have been applied to characterize the structural features of seven different bonding isomers of copper() thiocyanate dianion complexes (Sand/or N-bonded). The DFT calculations were carried out by means of the hybrid Becke 3LYP functional, using the 6-3111G* basis set. The ab initio calculations were done at the MP2/6-3111G* theoretical ...
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ژورنال
عنوان ژورنال: Canadian Journal of Chemistry
سال: 2018
ISSN: 0008-4042,1480-3291
DOI: 10.1139/cjc-2017-0647