Crystal Structure of A Novel Ionic Organotin Complex:{[Ph_(2)Sn]_(2)[2,6-(O_(2)C)_(2)C_(5)H_(3)N]_(3)H_(2)O}^(2-)[HNEt_(3)]_(2)^(+)

新型离子型有机锡化合物{[Ph_(2)Sn]_(2)[2,6-Py(CO_(2))]_(3)H_(2)O}^(2-)[HNEt_(3)]_(2)^(+)的晶体结构研究

A novel ionic organotin complex{[Ph_(2)Sn]_(2)[2,6-(O_(2)C)_(2)]C_(5)H_(3)N}_(3)H_(2)O}^(2-)[HNEt_(3)]^(2+)has been unexpectedly obtained by the reaction of Ph_(3)SnCl and 2,6-pyridine dicarboxylic acid in 1:1 molar ratio in the presence of organic base Et_(3)N.Possible dephenylation mechanism was illustrated.The X-ray diffraction study has shown that the title complex consists of cation moiety[HNEt_(3)]^(+)and anion moiety{[Ph_(2)Sn]_(2)[2,6-(O_(2)C_(2))C_(5)H_(3)N]_(3)H_(2)O}^(2-)with tin(IV)in a pengonal bipyramidal coordination geometry.

利用三苯基氯化锡和2,6-吡啶二甲酸在三乙胺存在下以1:1摩尔比反应,合成了离子型有机锡化合物[Ph_(2)Sn]_(2)[2,6-Py(CO_(2))]_(3)H_(2)O^(2-)[HNEt_(3)]_(2)^(+).通过元素分析、红外光谱和核磁共振氢谱对其结构进行了表征.用X-射线单晶衍射测定了该化合物的晶体结构.化合物的单斜晶系,空间群P2_(1)/n,α=1.7073(7)nm,b=1.7447(7)nm,c=2.4333(10)nm,β=109.694(7)°,Z=4,V=6.824(5)nm^(3),Dc=1.282 g/cm^(3),μ=0.793 mm^(-1),F(000)=2696,R_(1)=0.0563,WR_(2)=0.1539.化合物中两个锡原子呈七配位畸变五角双锥构型.