Synthesis and structural studies of molybdenum and palladium complexes of 1,5-diaza-3,7-diphosphacyclooctane ligands
摘要:
1,5-Diaza-3;7-diphosphacyclooctanes form 1:1 complexes with the metal fragments Mo(CO)(4) and PdCl2. Two of these products along with a parent heterocycle have been structurally characterized. The [P(Ph)CH2N(2-pyridyl)CH2], ring is found in a crown conformation while its cis-Mo(CO)(4) complex adopts a chair-boat ligand conformation. On the other hand, the cis-PdCl2 complex of [P(Ph)CH2N(Bz)CH2](2) is found to retain a highly flattened crown ligand conformation Unlike rha related eight-membered heterocycle 1,3,5,7-tetraoxa-2,3,6,8-tetraphosphacyclooctane which behaves as a tetradentate ligand chelating homo- or hetero-bimetallics, coordination to a second metal by these complexes was not realized. (C) 1999 Elsevier Science Ltd. All rights reserved.
Synthesis and Structure of N-Pyridyl-Containing Cyclic Aminomethylphosphines
摘要:
N-pyridyl-containing cyclic aminomethylphosphines have been prepared via condensation of the corresponding bis(hydroxymethyl)arylphosphines with p-aminopyridine and m-aminomethylpyridine.
Nickel complexes with cyclic ligands containing P and N atoms as coordination sites: novel biomimetic catalysts for hydrogen oxidation
作者:V. V. Khrizanforova、Yu. G. Budnikova、I. D. Strelnik、E. I. Musina、M. I. Valitov、M. K. Kadirov、A. A. Karasik、O. G. Sinyashin
DOI:10.1007/s11172-013-0131-0
日期:2013.4
Nickel complexes with newcyclicligands containing phosphorus and nitrogen atoms as coordination sites are novel efficient catalysts for hydrogen oxidation. A systematic study of their electrochemical properties made it possible to classify the nickel systems in question into four groups according to the sequence of electron transfer processes in the reduction (MII-MI-M0) and to the nature of solvents