Ligand substitution of [M(SnPh3)(MeCN)2(CO)2(NO)](M = Cr or W) and crystal structure of [Cr(SnPh3)(MeCN){P(OMe)3}(CO)2(NO)]

Abstract

[M(SnPh₃)(MeCN)₂(CO)₂(NO)][(1) M = Cr; (2) M = W] react with P(OMe)₃, PEt₃, and [N(PPh₃)₂][S₂CNEt₂] to form the complexes [Cr(SnPh₃)(MeCN){P(OMe)₃}(CO)₂(NO)](3), [M(SnPh₃){P(OMe)₃}₂(CO)₂(NO)][(4) M = Cr; (5) M = W], [M(SnPh₃)(PEt₃)₂(CO)₂(NO)][(6) M = Cr; (7) M = W], and [N(PPh₃)₂][M(SnPh₃)(S₂CNEt₂)(CO)₂(NO)][(8) M = Cr; (9) M = W]. The structure of (3) has been determined by X-ray diffraction methods. Crystals are monoclinic, space group P2₁/c with a= 11.267(3), b= 13.025(3), c= 19.501(9)Å, β= 100.98(2)°, and Z= 4. Least-squares refinement based on 4 270 observed reflections led to a final R of 0.057.