試題詳解

18. Cis- and trans-isomers of square planar [PtCI₂(PPh₃)₂] can be distinguished by several methods. Which statement is incorrect?
(A) cis-[PtCI₂(PPh₃)₂] has two IR active Pt-CI stretching modes but trans-[PtCl₂(PPh₃)₂] has only one
(B) In the ³¹P NMR spectrum, the observed J(³¹P³¹P) for trans-PtCl₂(PPh₃)₂ is greater than that for cis- [PtCl2(PPh3)2]
(C) The value of J1p195Pt) for cis-[PtCl2(PPh3)2] is greater than that for trans-(PtCl₂(PPh₃)₂]
(D) X-ray crystallography would definitively distinguish between the isomers