摘要:
The reactions of carbazole (C12H8NH), indole (C8H6NH) and pyrrole (C4H4NH) with the zerovalent [Pt(PEt3)(3)], [Pd(PEt3)(3)] and [Ni(PEt3)(3)] gave oxidative insertion into the N-H bond, affording the corresponding hydrides of the type trans-[HM(LN)(PEt3)(2)], LN = de-protonated heterocyclic ligand; the isolated compounds for platinum were trans-[HPt(C8H6N)(PEt3)(2)] (1), trans-[HPt(C4H4N)(PEt3)(2)] (2), and for nickel trans-[HNi(C12H8N)(PEt3)(2)] (3), trans-[HNi(C8H6N)(PEt3)(2)] (4) and trans-[HNi(C4H4N)(PEt3)(2)] (5); on using palladium the corresponding hydrides were also detected in solution, however, after longer reaction time the double substituted compounds: trans-[Pd(C12H8N)(2)(PEt3)(2)] (6), trans-[Pd(C8H6N)(2)(PEt3)(2)] (7) and trans-[Pd(C4H4N)(2)(PEt3)(2)] (8) were obtained. A crystal structure is reported for 6. (C) 2002 Elsevier Science B.V. All rights reserved.