Novel bis(β-diketonato)diorganotin(IV) derivatives containing bulky 4-acyl-5-pyrazolonato ligands: Influence of the steric hindrance of the acyl moiety on the solid state structures of tin complexes and their behaviour in solution
作者:Francesco Caruso、Corrado Di Nicola、John V. Hanna、Fabio Marchetti、Claudio Pettinari、Riccardo Pettinari、Miriam Rossi、Gregory J. Rees、Brian W. Skelton、Allan H. White
DOI:10.1016/j.ica.2010.12.008
日期:2011.2
= CH3, C2H5, C6H11, n- and t-C4H9, C6H5,) have been synthesised and characterised by analytical and spectral techniques. Variable temperature NMR studies of (QCHPh2)2SnR2 derivatives (R = CH3 and C2H5) in chlorohydrocarbon solvents indicate a fluxional behaviour, with rapid interconversion between six- and five-coordinate species, the latter containing a bidentate acylpyrazolonate and a monodentate
新的(Q)2SnR2衍生物(一般为总部;详细信息:HQCHPh2 = 4-二苯基乙酰基-3-甲基-1-苯基-5-吡唑酮; HQBn = 3-甲基-1-苯基-4-苯基乙酰基-5-吡唑啉酮;已合成HQnaph = 3-甲基-4-萘甲酰基-1-苯基-5-吡唑啉酮; R = CH3,C2H5,C6H11,n-和t-C4H9,C6H5),并通过分析和光谱技术进行了表征。(QCHPh2)2SnR2衍生物(R = CH3和C2H5)在氯代烃溶剂中的可变NMR研究表明,通量的行为具有六和五配位物质之间的快速相互转化,后者包含双齿酰基吡唑啉酸酯和单齿酰基。二有机锡(IV)衍生物(QCHPh2)2SnMe2,(QCHPh2)2SnEt2,(QBn)2SnMe2和(包括每个Qx家族的代表)的X射线晶体结构显示出偏心的反八面体构型的金属中心。β-二酮酸酯供体的4-酰基部分具有立体效应,该立体效应与固态和溶液态的结构行为有关。(QBn)2SnR2(R