Journal
ORGANOMETALLICS
Volume 32, Issue 1, Pages 323-329Publisher
AMER CHEMICAL SOC
DOI: 10.1021/om301144h
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- Australian Research Council
- U.S. Air Force Asian Office of Aerospace Research and Development [FA2386-11-1-4110]
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Two extremely bulky bis(aryl)amines, HN(Ar*)(Ph) (HLPh) and HN(Ar*)(Mes) (HLMes) (Ar* = C6H2{C(H)Ph-2}(2)Me-2,6,4; Mes = mesityl), have been prepared by palladium-catalyzed cross-coupling reactions and structurally characterized. These have been utilized in the preparation of the amido-germanium(II) chlorides, [(LGeCl)-Ge-Ph] and [(LGeCl)-Ge-Mes]. Reactions of these, and the known complex, [L'GeCl] (L' = -N(Ar*)(SiMe3)), with Na[CpMo(CO)(3)] have afforded the first examples of structurally characterized two-coordinate molybdenum substituted germylenes, [Cp(CO)(3)MoGeN(Ar*)(R)] (R = SiMe3 or Ph). The former readily eliminates a molecule of CO when heated or irradiated with UV light to give an unprecedented aminogermylyne complex, [Cp(CO)(2)Mo GeN(Ar*)(SiMe3)]. The spectroscopic and structural data for this complex, in combination with the results of computational studies, show that this compound is best viewed as having a bent Mo-Ge triple bond, with little multiple bond character to its Ge-N interaction. Computational studies have also indicated that the Mo-Ge-N bending in the complex is due to the extreme steric bulk of its amido substituent.
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