| | 1 | Author
| G. Kliche | Requires cookie* | | | Title
| L a ttic e  | | | | Abstract
| V ib r a tio n s o f th e C o o p e rite s P d O a n d P t S The vibrational spectra of the cooperite type compounds PdO and PtS (space group P42/mmc — D4h, Z = 2) are analyzed. Good agreement between experimental and calculated lattice vibration frequencies is obtained using a force field which includes short-range force constants only. This demonstrates a highly covalent bonding character of the cooperites. | | | |
Reference
| Z. Naturforsch. 44a, 169—172 (1989); received December 3 1988 | | | |
Published
| 1989 | | | |
Keywords
| Vibrational spectra, normal coordinate analysis, force constants, cooperite-type com pounds | | | |
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| default:Reihe_A/44/ZNA-1989-44a-0169.pdf | | | | Identifier
| ZNA-1989-44a-0169 | | | | Volume
| 44 | |
| 2 | Author
| Svend Sievertsen, Lutz Galich, Heiner Homborg | Requires cookie* | | | Title
| E | | | | Abstract
| l e c t r o n i c R a m a n S p e c tr a o f a L o w -S p in F e r a P o r p h y r i n a n d R e e x a m in a tio n o f th e V ib r a t i o n a l S p e c tr a o f K 3[F e (C N)6] a n d [F e (C 5H 5)2]B F4 The resonance Raman spectra of (nBu4N)[Fe(CN)2TPP] (("BiitN): tetra(n-butyl)ammonium; TPP: m-tetraphenylporphyrin), K3 [Fe(CN)6] and [Fe(C5H5)2]BF4 have been investigated. A molec ular electronic Raman (ER) effect at 545 cm"1 is observed for (nBu4N)[Fe(CN)2TPP]. The transi tion occurs between lower 'TV' and upper 'Tg" level of the spin-orbit split ground state assuming pseudo-octahedral symmetry. In contrast to earlier studies no ER effect is detected for K3[Fe(CN)6] and [Fe(C5H5)2]BF4. For Raman shifts < 800 cm-1 only one strong Raman line is observed for [Fe(C5H5)2]BF4 at 311 cm-1, assigned to the iron ring stretch designated by u4 (aig in D5(j). Due to a phase transition of K3[Fe(CN)6], two additional strong vibrational lines at 329 and 352 cm-1 appear in the Raman spectrum taken at 10 K. Their intensities show A "term" behaviour of the resonance Raman effect with overtones and combinations for both lines. These are components of the vibronic combinations with the i/6, vi, and i/g modes (tiu in Oh) in the IR spectra, too. | | | |
Reference
| Z. Naturforsch. 50a, 881—887 (1995); received May 26 1995 | | | |
Published
| 1995 | | | |
Keywords
| Di(cyano)-m-tetraphenylporphinatoferrate(III), Hexacyanoferrate(III), Ferricenium, Electronic Raman Spectra, Vibrational Spectra | | | |
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| default:Reihe_A/50/ZNA-1995-50a-0881.pdf | | | | Identifier
| ZNA-1995-50a-0881 | | | | Volume
| 50 | |
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