Synthesis and characterization of new di-n-butyl[bis{dimethyl-2-(3-oxo-5-phenyl(4-subtituted)penten-5-ato)malonates}]tin(IV): The crystal structure of di-n-butyl[bis{dimethyl-2-[5-(4-nitrophenyl)-3-oxo-penten-5-ato]malonate}]tin(IV)
作者:David Aaron Nieto-Álvarez、Federico Jiménez-Cruz、Teresa Mancilla
DOI:10.1016/j.poly.2005.02.024
日期:2005.6
2a–2d is reported. These complexes have been characterized by 1H, 13C, 119Sn NMR, HMQC, HMBC, infrared spectroscopy and mass spectrometry (FAB). Their structures in CDCl3 solution show a distorted octahedral geometry with a trans disposition of the n-butyl substituents. The 119Sn NMR study at low variable-temperature indicates the presence of trans anti- and syn-isomers, and solid-state 13C and 119Sn
摘要报道了四种新的二正丁基[双二甲基-2-(3-氧代-5-苯基(4-取代)戊烯-5-基)丙二酸酯}]锡(IV)2a–2d的合成。这些配合物的特征在于1H,13C,119Sn NMR,HMQC,HMBC,红外光谱和质谱(FAB)。它们在CDCl3溶液中的结构显示出扭曲的八面体几何形状以及正丁基取代基的转位。在低可变温度下的119Sn NMR研究表明存在反式和反式异构体,化合物2d的固态13C和119Sn NMR光谱也提供了反式异构体混合物的证据。化合物2d在168 K的X射线衍射研究仅显示反式同分异构体,其中金属以梯形梯形双锥体(STB)几何形状六配位。