Synthesis and Structures of Alkynylchlorocyclotriphosphazenes and Their Cluster-Forming Reactions with Octacarbonyldicobalt
摘要:
Cyclotriphosphazenes having p-tolylethynyl and chloro substituents N(3)P(3){C C(p-Tol)}(n)Cl(6-n) (1a: n = 2, 1b: n = 4; p-Tol = p-tolyl) were synthesized by the reaction of hexachlorocyclotriphosphazene (NPCl(2))(3) with 2 equiv of LiC C(p-Tol) in THF. 1a and 1b were characterized by spectroscopic methods and elemental analyses. The reactions of 1a and 1b with octacarbonyldicobalt Co(2)(CO)(8) produced cobalt clusters containing tetrahedral C(2)Co(2)(CO)(6)(p-Tol) cluster units; namely, tetranuclear cluster N(3)P(3){C(2)Co(2)(CO)(6)(p-Tol)}(2)Cl(4) (2) and hexanuclear cluster N(3)P(3){C(2)Co(2)(CO)(6)(p-Tol)}(3){C C(p-Tol)}Cl(2) (3). Crystal structures of 1a and 2 were determined by X-ray crystallography.