Reactions of RTeCl<sub>3</sub> (R = 2-phenylazophenyl) with Diorganophosphinic Acids. Te–C Bond Cleavage and Stabilization of the Te═O Motif in an Umbrella-Shaped Te<sub>5</sub>O<sub>11</sub>P<sub>2</sub> Multi-metallacyclic Framework
                                
                                    
                                        作者:Ramesh K. Metre、Subrata Kundu、Dipankar Sahoo、Vadapalli Chandrasekhar                                    
                                    
                                        DOI:10.1021/om5000216
                                    
                                    
                                        日期:2014.5.12
                                    
                                    The reaction of 1,1,2,3,3-pentamethyltrimethy-lenephosphinic acid cycP(O)OH and (C6H11)(2)P(O)OH with monoorganotellurium trichloride RTeCl3 (R = 2-phenyl-azophenyl) in benzene at room temperature afforded two pentanuclear complexes, [(RTe)(4)(TeO)(mu-O)(6)(cycPO(2))(2)]center dot THF(1) [cycPO(2) = 1,1,2,3,3-pentamethylene phosphinate] and [(RTe)(4)(TeO)(mu-O)(6)(C6H11)(2)PO2}(2)]center dot 2C(6)H(6) (2). The reactions leading to the formation of 1 and 2 involve a Te-C bond cleavage. 1 and 2 are isostructural complexes and contain Te4P2O6 macrocyclic framework that is part of a Te5O11P2 multi-metallacyclic framework. Both of these compounds contain a a central inorganic Te=O connected to four other tellurium centers through four mu-O bridges.