Crystal structure and magnetic properties of Cu2Cl2(C5H5N)2(OCH3)2: a catalytic species related to the copper(II)-induced oxidation of phenols

Abstract

PPh2)2Rh(COD) should be half the number in [Rh(/t-PPh2)(COD)]2, if both COD ligands are lost from the latter. The rate of hydrogenation of 1-octene with [(DPPE)Rh(/u-PPh2)2Rh(COD)] is actually greater than the rate for [Rhgrants that aided the purchase of the 300-and 200-MHz NMR instruments, respectively. We also thank Professor G. G. Christoph for help with the X-ray structure determination and the John Simon Guggenheim Foundation for a fellowship to D.W.M. for 1981-1982.

Syntheses, crystal structures and properties of silver(i) and copper(ii) complexes with an oxazoline-containing tetradentate ligand

“…It has been reported that in the methoxyl-bridged Cu 2 O 2 unit there is an antiferromagnetic interaction when the Cu-O-Cu angle is larger than 95.71 and a ferromagnetic interaction when the Cu-O-Cu angle is smaller than 95.71. 19,23,24 In complex 6, the methoxyl-bridged Cu1-O51-Cu2 and Cu1-O52-Cu2 angles are 98.5(2) and 98.3(2)1, respectively, suggesting the presence of an antiferromagnetic intra-dimer interaction. The plot of w M À1 vs. T is shown in Fig.…”

A new copper chloride chain by supported hydrogen bonding

“…A commonly used group of molecules for these purposes are nitrogen donor ligands. Aromatic pyridines and polypyridines [14][15][16][17] are typical examples of such molecules. Non-aromatic rings such as piperidine and piperazine have also been used for construction of extended copper halide structures.…”

Metal complexes formed by metal-assisted solvolysis of di-pyridylketone azine: structures and magnetic properties

“…Hydroxoand alkoxo-bridged Cu(II) complexes exhibit magnetic behaviour ranging from the antiferromagnetic to ferromagnetic depending on the geometry of Cu 2 (OR) n (n = 1 and 2, R = H, alkyl, aryl) binding units. [16][17][18][19][20][21][22][23][24][25][26][27][28] The well-studied hydration reaction of the di-pyridylketone (dpk) ligand has been implemented to construct several metal clusters, in which the two pyridyl N atoms and the gem-diol obtained from metal-promoted hydration act as four potential donor sites and the resulting M(II)-dpk-azide (M = Co, Ni) compounds have been characterized so far to be isomorphous. 14c, 29 Herein, an analogous hydration reaction would be expected using di-pyridylketone azine (dpka) (Scheme 1) for the assembly of metal clusters and the hydration or solvolysis reaction will occur at the imino group to widen the range of structural arrangements.…”