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)]

Abstract The crystal and molecular structures of [(phenH) 2 Cl][Cr 2 (CO) 10 ( μ -H)] ( 1 ) and [K(phen) 2 ][Cr 2 (CO) 10 ( μ -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.