The second case of linear end-on and evidence for an unprecedented bridging end-on coordination mode of CO2 have been discovered for vanadium aryloxide complexes of the tetradentate ligand system (ONNO)2- (ONNO=2,4-Me2 -2-(OH) C6 H2 CH2 ]2 N(CH2 )2 NMe2 ). The reaction of divalent (ONNO)VII (TMEDA) with CO2 and under the appropriate reaction conditions affords the trivalent (ONNO)VIII (OH)(η1 -CO2
对于四齿
配体系统(ONNO)2-(ONNO = 2,4-Me2 -2-( OH)C6 H2 ] 2 N(
CH2)2 NMe2)。二价(ONNO)VII(TME
DA)与
CO2在适当的反应条件下反应,得到三价(ONNO)VIII(OH)(η1- ),这是由中间的 脱氧途径随后是从芳族化合物中提取H原子引起的溶剂和
二氧化碳固定。相反,用K还原三价(ONNO)VIII Cl(THF),然后在醚溶剂中暴露于 ,得到双核[(ONNO)VII] 2(μ,η1- )。