Synthesis of cationic zinc complexes from protonated diazadienes and ZnR2 (R = Et, N(SiMe3)2). The crystal structures of [PriDADH][H2N{B(C6F5)3}2]
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- 作者：Hannant ; Mark D. ; Schormann ; Mark ; Hughes ; David L. ; Bochmann ; Manfred
- 关键词：Zinc complexes ; Diazadiene ; Crystal structures ; Alkyl complexes ; Amido complexes
- 刊名：Inorganica Chimica Acta
- 出版年：2005
- 出版时间：March 15, 2005
- 年：2005
- 卷：358
- 期：5
- 页码：1683-1691
- 全文大小：519 K
文摘
Protonation of Formula Not Shown (PriDAD) with [H(OEt2)2][H2N{B(C6F5)3}2] affords the immonium salt [PriDADH][H2N{B(C6F5)3}2] (1) which shows intra- and inter-ionic NHaaaF hydrogen bonding in the solid state. Protolysis of ZnEt2 with [PriDADH][H2N{B(C6F5)3}2] gives [(PriDAD)ZnEt][H2N{B(C6F5)3}2] as a reactive intermediate. Repeated recrystallizations allowed the isolation of the dimeric zinc hydroxo complex [{(PriDAD)Zn(aa-OH)}2][H2N{B(C6F5)3}2]2 (2) which shows asymmetric OH-bridges. The analogous reaction of [Ph*DADH][H2N{B(C6F5)3}2] [Ph*DAD=(MeCNC6H3Ph2-2,6)2 with ZnMe2 or M{N(SiMe3)2gives the three-coordinate Zn and Cd compounds [(Ph*DAD)ZnMe][H2N{B(C6F5)3}2] (5) and [(Ph*DAD)MaaaN(SiMe3)2][H2N{B(C6F5)3}2] (6, M=Zn; 7, M=Cd). The crystal structures of 1, 2 and 6 are reported.