The influence of the cation on the conformation of the anion μ-hydridobis[pentacarbonylchromium(0)]:: crystal and molecular structure of [(phenH)2Cl][Cr2(CO)10(μ-H)] and [K(phen)2][Cr2(CO)10(μ-H)]

The crystal and molecular structures of [(phenH)(2)CI][Cr-2(CO)(10)(mu-H)] (1) and [K(phen)(2)][Cr-2(CO)(10)(mu-H)] (2) have been determined by single crystal X-ray diffraction. The availability of the potassium cation for the carbonyl oxygens coordination influences the conformation of the anion in 2 as demonstrated by the comparison with the non-coordinating [(phenH)(2)Cl] cation in 1 and with literature data. (C) 1999 Elsevier Science S.A. All rights reserved.