Reactions of Cyclohexyl Isocyanide with η5‐Substituted Cyclo‐pentadienyl MoMo Triply Bonded Complexes. Crystal Structure of [Mo(CO)2(η5‐C5H4CO2CH3)]2(μ‐η2‐CNC6H11) |
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| Authors: | Qingshan Li Chuncheng Luo Licheng Song |
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| Institution: | State Key Laboratory of Elemento‐organic Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China |
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| Abstract: | Reactions of one or two equiv. of cyclohexyl isocyanide in THF at room temperature with Mo?Mo triply bonded complexes Mo(CO)2(η5‐C5H4R)]2 (R=COCH3, CO2CH3) gave the isocyanide coordinated Mo? Mo singly bonded complexes with functionally substituted cyclopentadienyl ligands, Mo(CO)2(η5‐C5H4R)]2(μ‐η2‐CNC6H11) ( 1a , R=COCH3; 1b , R=CO2CH3) and Mo(CO)2(η5‐C5H4R)(CNC6H11)]2 ( 2a , R=COCH3; 2b , R=CO2CH3), respectively. Complexes 1a , 1b and 2a , 2b could be more conveniently prepared by thermal decarbonylation of Mo? Mo singly bonded complexes Mo(CO)3(η5‐C5H4R)]2 (R=COCH3, CO2CH3) in toluene at reflux, followed by treatment of the resulting Mo?Mo triply bonded complexes Mo(CO)2(η5‐C5H4R)]2 (R=COCH3, CO2CH3) in situ with cyclohexyl isocyanide. While 1a , 1b and 2a , 2b were characterized by elemental analysis and spectroscopy, 1b was further characterized by X‐ray crystallography. |
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| Keywords: | dimolybdenum complex metal‐metal bond bridging isocyanide terminal isocyanide crystal structure |
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