Synthesis and spectroscopic investigations (IR, NMR and Mössbauer) of tin(IV) and organotin(IV) derivatives of bis(pyrazol-1-yl) alkanes: X-ray crystal structures of bis(4-methylpyrazol-1-yl) methane and its dimethyltin(IV) dichloride adduct
作者:Claudio Pettinari、Adriana Lorenzotti、Gabriella Sclavi、Augusto Cingolani、Eleonora Rivarola、Marcello Colapietro、Alberto Cassetta
DOI:10.1016/0022-328x(95)05445-u
日期:1995.6
A series of 1:1 adducts of the type [(L)RnSnX4−n]·zH2O (L ≡ bis(4-methylpyraazol-1-yl)ethane (L4), bis(3,4,5-timethylpyrazol-1-yl)methane (LT), 1,2-bis(pyrazol-1-yl)ethane (LA) or 1,2-bis(3,5-dimethylpyrazol-1-yl)ethane (LB); R ≡ Me, Et, Bu or Ph; X ≡ I, Br or Cl; n = 0, 1 or 2; z = 1, 1.5 or 2), and the likely polynuclear [(LA)5(SnCl4)4]·(H2O)5 and have been characterized in the solid state and in
[(L)R n SnX 4− n ]· zH 2 O(L≡双(4-甲基吡唑-1-基)乙烷(L 4),bis(3,4, 5- timethylpyrazol -1-基)甲烷(L Ť),1,2-双(吡唑-1-基)乙烷(L甲)或1,2-双(3,5-二甲基吡唑-1-基)乙烷(大号乙); R≡ME等,卜或pH; X≡I,Br或Cl; ñ = 0,1或2; ž = 1,1.5或2),和可能的多核[(L甲)5( SnCl 4)4 ]·(H 2 O)5和通过分析,光谱(IR,Mössbauer以及1 H,13 C和119 Sn NMR)数据和电导率测量,已在固态和溶液中表征了H2O 。当L T与SnCl 4反应时,观察到碳(sp 3)-氮键断裂,得到加合物[(3,4,5-三甲基-吡唑)2 SnCl 4 ]。二有机锡(IV)配合物通常在氯仿或丙酮溶液中解离,而三氯锡(IV)和四氯锡(IV)加合物可能保留六配位构型。L