Synthesis and Crystal Structure of the First Polymeric Cesium Compound of a Carborane Ligand System

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• 作者：Narayan S. Hosmane ; Temesgen Demissie ; Hongming Zhang ; John A. Maguire ; William N. Lipscomb ; Frank Baumann ; and Wolfgang Kaim
• 刊名：Organometallics
• 出版年：1998
• 出版时间：February 2, 1998
• 年：1998
• 卷：17
• 期：3
• 页码：293 - 295
• 全文大小：156K
• 年卷期：v.17,no.3(February 2, 1998)
• ISSN：1520-6041

文摘

The reaction between a THF solution of(SiMe₃)₄C₄B₈H₈(1) and excess cesium metal, in theabsence of either naphthalene or aromatic solvents,produced a paramagnetic intermediate that reactedfurther with cesium to give the EPR-silent species[exo-Cs(TMEDA)-1-Cs-2,4,7,9-(SiMe₃)₄-2,4,7,9-C₄B₈H₈]_n(2).Single-crystal X-ray analysis showed 2 to be apolymericstructure in which each C₄B₈ carborane fragmentservesas a ligand to two Cs atoms and is bonded to one throughan open six-membered face and to the other via upper-and lower-belt M-H-E (where E = B, C) interactions.