二[邻(间)氟苄基]二氯化锡的合成和晶体结构

Synthesis,Crystal Structure of the Bis(o-fluorobenzyl)tin Dichloride,Bis(m-fluorobenzyl)tin Dichloride

邻氟苄基氯和间氟苄基氯在适当的溶剂中与锡粉反应,合成了二(邻氟苄基)二氯化锡(1)和二(间氟苄基)二氯化锡(2),经X射线衍射方法测定了新化合物的晶体结构。化合物1属单斜晶系,空间群为C2/c,晶体学参数:a=2.366 3(7)nm,b=0.483 58(14)nm,c=1.269 9(4)nm,β=93.789(4)°,V=1.450 0(8)nm3,Z=4,Dc=1.868g/cm3,μ(Mo Kα)=21.35cm-1,F(000)=792,R1=0.042 3,Rw=0.117 4。化合物2属单斜晶系,空间群为C2/c,晶体学参数:a=2.382 4(3)nm,b=0.479 15(5)nm,c=1.28157(14)nm,β=94.142(2)°,V=1.459 1(3)nm3,Z=4,Dc=1.856g/cm3,μ(MoKα)=2.121cm-1,F(000)=792,R1=0.021 3,wR2=0.045 8;中心锡原子为畸变四面体构型。测定了配合物的热稳定性。

The bis（o-fluorobenzyl）tin dichloride （1） and the bis（m-fluorobenzyl）tin dichloride （2） have been synthesized. The crystal struc-tures of the complexes were determined by X-ray diffraction. The crystal 1 belongs to rnonoclinic space group C2/c with a=2.366 3（7）nm,b=0.483 58（14）nm,c=1.269 9（4）nm,β=93.789（4）°,V=1.450 0（8）nm3,Z=4,Dc=1.868g/cm3,μ（Mo Kα）=21.35cm-1,F（000）=792,R1=0.042 3,Rw=0.117 4. The crystal 2 belongs to monoclinic space group C2/c with a=2.382 4（3）nm,b=0.479 15（5）nm,c=1.28157（14）nm,β=94.142（2）°,V=1.459 1（3）nm3,Z=4,Dc=1.856g/cm3,μ（MoKα）=2.121cm-1,F（000）=792,R1=0.021 3,wR2=0.045 8. The tin atoms have a distorted tetrahedral geometry.