Studies on binuclear complexes. Formation and molecular structure of Ni2(μ-dpm)2(μ-CO)(CO)2

Article abstract of DOI:10.1016/0022-328X(88)80285-7

Under ambient conditions (¹η-dpm)2NiCl2 was reduced by zinc powder in the presence of carbon monoxide to (¹η-dpm)2Ni(CO)2 and Ni2(μ-dpm)2(μ-CO)(CO)2.The molecular structure of the latter complex was determined by X-ray crystallography.The complex crystallized in the monoclinic space group C2/c with a 21.224(6), b 14.893(5), c 15.282(3) Angstroem, β 100.43(2) deg, Z = 4.The final values of R = 0.075 and R_w = 0.081 were obtained for 2082 independent reflections.The Ni-Ni distance is 2.694(1) Angstroem.In this complex both nickel atoms have pseudotetrahedral configuration if the Ni-Ni bond is not taken into account.The molecular configuration is one of a W-frame with C_2v symmetry.