Reactivity Studies of (Phenylethynyl)germylene LGeC鈮Ph (L = HC[C(Me)N-2,6-iPr2C6H3]2) toward Pentafluorophenylcopper(I), -silver(I), and -gold(I) Co

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• 作者：Na Zhao ; Jinyuan Zhang ; Ying Yang ; Guifang Chen ; Hongping Zhu ; Herbert W. Roesky
• 刊名：Organometallics
• 出版年：2013
• 出版时间：February 11, 2013
• 年：2013
• 卷：32
• 期：3
• 页码：762-769
• 全文大小：411K
• 年卷期：v.32,no.3(February 11, 2013)
• ISSN：1520-6041

文摘

Reactions of (phenylethynyl)germylene LGeC鈮Ph (L = HC[C(Me)N-2,6-iPr₂C₆H₃]₂) with 0.25 equiv of (CuC₆F₅)₄, 1 equiv of AgC₆F₅路MeCN, and 1 equiv of AuC₆F₅路SC₄H₈, respectively, yielded LGe(C鈮Ph)CuC₆F₅ (1), [(LGeC鈮Ph)₂Ag]⁺[Ag(C₆F₅)₂]^{鈭?/sup> (2), and LGe(C鈮Ph)AuC₆F₅ (3). Complexes 1鈥?b>3 were characterized by IR and NMR spectroscopy and X-ray crystallography. Compound 1 shows a bonding pattern of the CuC₆F₅ entity by both the phenylethynyl C鈮 linkage and the L ligand backbone of the 纬-C atom, while 3 exhibits a bonding mode of the AuC₆F₅ entity at the germylene center. Compound 2 is an ionic derivative featuring the Ge鈥揂g donor鈥揳cceptor bond formed under redistribution of the AgC₆F₅ entity. Further reactions of 1 with (CuC₆F₅)₄, AgC₆F₅路MeCN, and AuC₆F₅路SC₄H₈ afforded the complexes LGe(C鈮Ph)(CuC₆F₅)(MC₆F₅) (M = Cu (4), Ag (5), Au (6)). Compounds 4鈥?b>6 were characterized by IR and NMR spectroscopy, and 5 and 6 were further investigated by X-ray crystallography. Compounds 4鈥?b>6 all show an additional bonding of the respective MC₆F₅ moiety at the germylene center of 1. These studies reveal a multiple donor reactivity of LGeC鈮Ph. The slightly different Lewis acidic properties of the congeneric pentafluorophenylcopper(I), -silver(I), and -gold(I) complexes as acceptors are thus disclosed.}