X-ray crystal structure of the clathrate compound tetrakis[(benzonitrile)(triphenylphosphorane)nickel(0)] · 2 toluene · ~1 n-hexane · ~1 cycloocta-1,5-diene

摘要: Abstract The preparation and the chemical properties of clathrate compound tetrakis[(benzonitrile)(triphenylphosphorane)nickel(0)] · 2 toluene ~1 n-hexane cycloocta-1,5-diene are described. crystal molecular structure this were determined from X-ray diffractometer data. was solved by direct Fourier methods refined least-squares techniques to R = 0.117 for 3441 independent reflections. crystals monoclinic, space group P21, with Z 2, in a unit cell dimensions 14.680(7), b 28.198(18), c 15.482(8) A, β 118.43(8)°. Eight (NiP(C6H5)3 NCC6H5) formula units present as two tetrameric molecules cell. Each Ni atom tetramer is linked σ bonds P N π NC another benzonitrile molecule. coordination nickel atoms roughly trigonal. form an eight-membered ring boat conformation. NCC groups residues bent NC distances indicate high degree double bond character all these bonds. triphenylphosphorane adopt “propeller”-like Four solvent toluene, 1 n-hexane, per asymmetric