Synthesis, characterization, X-ray structure and reactivity of the unbridged Ni-Te bond in [(η5-C5H5)Ni-Te(C6H 3Me3)2P(C2H5) 3]

Article abstract of DOI:10.1016/S0020-1693(97)05529-1

The high reactivity of the unbridged Ni-Ni and Te-Te bonds in the organonickel dimer [{(η⁵-Cp)NiPEt₃}₂] (1) and the ditelluride [{MesTe}₂] (2) (Mes = C₆H₃Me₃) leads to the formation of the dinuclear nickel tellurato complex [(η⁵-Cp)Ni-TeMesPEt₃] (3) via metathesis reaction. The structure of 3 is determined by an X-ray analysis whose prominent feature is the unbridged Ni-Te bond (2.485(1) A). Complete solution NMR characterization of 3 (¹H, ¹³C, ³¹P, ¹²⁵Te) is reported. 3 exhibits an unbridged Ni-Te bond which is cleaved by stannylene SnR₂ (R = {CH(SiMe₃)₂}) (6) to form the tetranuclear tin tellurolato complex 7.