251. Electronic Absorption, Magnetic Circular Dichroism, and Circular Dichroism Spectra ofcis- andtrans-[Pd(Cl)2(N)2]-type Complexes and Their Electronic Structures
- Author
-
Takashi Komorita, Kazuhiko Nakayama, and Yoichi Shimura
- Subjects
chemistry.chemical_classification ,Circular dichroism ,Chemistry ,Stereochemistry ,Magnetic circular dichroism ,Ethylenediamine ,General Chemistry ,Electronic structure ,Molecular electronic transition ,Crystallography ,chemistry.chemical_compound ,Absorption (chemistry) ,Inorganic compound ,Cis–trans isomerism - Abstract
The electronic absorption and MCD spectra of [PdCl2L] (L=ethylenediamine(en), 1,3-propanediamine, N,N-dimethylethylenediamine, N,N′-dimethylethylenediamine, N,N-diethylethylenediamine, and N,N-dimethyl-1,3-propanediamine) and trans-[PdCl2(L)2] (L=EtNH2, Me2NH, Me3N, n-BuNH2, i-BuNH2, s-BuNH2, t-BuNH2, and rac-pea (pea=1-phenylethylamine)), and CD spectra of [PdCl2L] (L=(S)-1,2-propanediamine-(S-pn) and (2S)-N1,N1-diethyl-1,2-propanediamine) and trans-[PdCl2(S-pea)2] have been measured over the visible-near UV region, together with the corresponding spectra of [PtCl2L] (L=en and S-pn). The examination of the three kinds of spectra as well as their Gaussian analyses indicates that the splitting pattern of metal d orbitals for the cis type complexes is similar to that for [PdCl4]2−, and that as to the trans complexes the dx2−y2←dxz and dyz transitions split largely to give apparent two spin-allowed d-d bands characteristic of the trans complexes. The average energy of the dx2−y2←dxz and dyz transitions for t...
- Published
- 1984
- Full Text
- View/download PDF