摘要
三环己基锡O,O'-二(4-氯苯基)二硫代磷酸酯(Ⅰ),C_(30)H_(41)Cl_2O_2PS_2Sn,M_r=718.36,单斜晶系,P2_1/n,a=16.151(2),b=9.415(1),c=22.987(3),β=105.69(1)°,Z=4,Dc=1.418g·cm ̄(-3),R=0.063;二丁基锡双[O,O'-二(4-甲基苯基)二硫代磷酸酯](Ⅱ),C_(36)H_(46)O_4P_2S_4Sn,M_r=851.66,单斜晶系,P2_1/c,a=12.284(4),b=9.807(1),c=34.471(8),β=99.02(2)°,Z=4,D_c=1.379g·cm(-3),R=0.042。化合物Ⅰ具有单分子的四配位变形四面体结构。其Sn-S(1)键长为2.501(2);而Sn与S(2)的原子间距则为3.597;化合物Ⅱ具有单分子的六配位变形八面体结构,其Sn-S(1),Sn-S(2),Sn-S(3)和Sn-S(4)的键长分别为2.495(3),2.493(2),3.244(4)和3.228(3)。
Crystal and molecular structures of tricyclohexylstannyl (O, O'-di-p-chlorophenyl)dithiophosphate(Ⅰ)and dibutylstannyl bis[(O,O-'di-p-tolyl)dithiophosphate] (Ⅱ)were determined by X-ray diffraction method.(Ⅰ),C_(30)H_(41)Cl_2O_2PS_2Sn , M_r = 718.36,monoclinic,P2_1/n, a=16. 151(2),b=9. 415(1),c=22. 987(3) , β=105. 69(1)°,Z=4, D_c=1.418 g·cm ̄(-3), R=0. 063;(Ⅱ),C_(36)H_(46)O_4P_2S_4Sn,M_r=851. 66,monoclinic,P2_1/c,a=12. 284(4),b= 9. 807(1), c=34. 471(8),β=99. 02(2)°, Z=4,D_c= 1. 379 g·cm ̄(-3),R=0.042.The coordination (2)geometry of Sn atom of(Ⅰ)is a slightly distorted tetrahedron.The coordination geometry of Sn atom of(Ⅱ)is a distorted octahedron. The steric hindrance effect clearly plays a determinant role in forming four-coordinate or six-coordinate tin species.
关键词
三环己基锡
二丁基锡
晶体结构
有机锡化合物
tricyclohexylstannyl derivative,dibutylstannyl derivative,crystal structure