ISSN:
0018-019X
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Platinum(II) Chromophores with σ-Bonded Ligating AtomsThe absorption spectra of the platinum(II) complexes PtLxL′4-x (L = NH3, amine, hydride, alkyl; L′ = trialkylphosphine) consist of three band systems: (i) ligand-field bands, partially of fully screened by more intensive absorptions; (ii) at least three comparatively sharp bands of low to intermediate intensity (∊ = 400-10000), which are assigned to Rydberg transitions from 5d(Pt) to a linear combination of the (n+1)s-orbitals of the ligands (with a contribution of metal 6s- or 6p-orbitals, respectively); (iii) (only in the case of chromophores with two phosphorus ligands in trans-position) one high intensity band (∊ = 20000-50000), presumably due to a transition from the asymmetric linear combination of the trans-lying phosphorus lone-pairs to 5dx2-y2(Pt). There is no evidence of low-lying π-combinations of phorphorus 3d-orbitals in the absorption spectra.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/hlca.19830660324
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