@article {6721, title = {Tetracarboxylatodirhenium complexes linked by axial cyano bridges to metalpentacarbonyl ligands - Synthesis and characterization}, journal = {European Journal of Inorganic Chemistry}, year = {1999}, note = {

ISI Document Delivery No.: 161EKTimes Cited: 17
Cited Reference Count: 42
Kuhn, FE Goncalves, IS Lopes, AD Lopes, JP Romao, CC Wachter, W Mink, J Hajba, L Parola, AJ Pina, F Sotomayor, J
Kuhn, Fritz/A-3113-2010; Pina, Fernando/C-8161-2011; Lopes, Andre/E-2136-2012; Romao, Carlos /D-1162-2010; Parola, A. Jorge/F-4048-2010; Sotomayor, Joao/D-8103-2013; Goncalves, Isabel/H-3742-2013
Romao, Carlos /0000-0001-5061-3743; Parola, A. Jorge/0000-0002-1333-9076; Sotomayor, Joao/0000-0002-4589-0591;
Wiley-v c h verlag gmbh
Berlin

}, month = {1999}, pages = {295-301}, abstract = {

Reaction of Re-2{mu-O2CC(CH3)(3)}(4)Cl-2 with [(CO)(5)M-CN]Na (M = Cr, Mo, W) leads to tetranuclear complexes of formula Re-2{mu-O2CC(CH3)(3)}(4)[-NC-M(CO)(5)](2) (M = Cr, Mo, W). These complexes were characterized by H-1-, C-13-, and Mo-95-NMR, IR and Raman spectroscopy, elemental analysis and examined by cyclic voltammetry. The applied methods show the donor capabilities of the [(CO)(5)M-CN](-) ligands which shift electron density towards the Re centers weakening the Re-Re quadruple bond. The Re-Re bond lengths and the v(Re-Re) force constants are estimated based on the FT-IR and Raman examinations. Photochemical examinations and TG/MS experiments have also been conducted. The latter methods shows that the product complexes decompose around 100 degrees C, by first loosing their carbonyl substituents; as do the Cr, Mo, W precursor compounds. The dirhenium tetrapivalate unit decomposes only at higher temperatures in a distinct second step.

}, isbn = {1434-1948}, url = {://WOS:000078275700013}, author = {Kuhn, F. E. and Goncalves, I. S. and Lopes, A. D. and Lopes, J. P. and Romao, C. C. and Wachter, W. and Mink, J. and Hajba, L. and A. J. Parola and Pina, F and J. Sotomayor} }