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本文研究了在1∶1丙酮-水混合溶剂中,回流条件下,cis-[Pt(diphos)Cl_2]与NaCNS之间的取代反应,第一次合成了CNS-的混合键合异构体的depe铂配合物cis-[Pt(depe)(NCS)(SCN)],进行了分子结构测定,属单斜晶系,空间群为P2_(1/n),晶胞参数:a=7.296(5),b=14.434(4),c=18.042(4) ,β=95.72(8)°,V=1890.7 ~3,Z=4,R_F=0.0564.在相同条件下用dPr~ipe作了对照实验,得到的是cis-[Pt(dPr~ipe)(NCS)_2],属单斜晶系,空间群为Cc,晶胞参数:a=12.279(6),b=9.330(8),c=20.102(7) ,β=108.90(9)°,V=2179.0(3) ~3,Z=4,R_F=0.0419。此外,还从双膦烷基的空间效应和电子效应讨论了对取代反应产物的影响。
In this paper, we studied the substitution reaction between cis- [Pt (diphos) Cl_2] and NaCNS in a 1: 1 acetone-water mixed solvent, and firstly synthesized the mixed bond isomers of CNS- (Pt / depe) (NC) (SCN)], which belongs to the monoclinic system with space group P2_ (1 / n). The unit cell parameters are as follows: a = 7.296 ), b = 14.434 (4), c = 18.042 (4), β = 95.72 (8) °, V = 1890.7-3, Z = 4 and R_F = 0.0564. The control experiment was performed under the same conditions with dPr-ipe , We get the cis- [Pt (dPr-ipe) (NCS) 2], which belongs to the monoclinic system with space group Cc. The unit cell parameters are a = 12.279 (6), b = 9.330 (8) 20.102 (7), β = 108.90 (9) °, V = 2179.0 (3) -3, Z = 4, R_F = 0.0419. In addition, the effect on the substitution reaction product was also discussed from the spatial and electronic effects of bisphosphonoalkyl.