ISSN:
1573-9171
Schlagwort(e):
complexes of antimony pentachloride
;
redistribution of the electron density
;
stability of complexes
;
X-ray spectroscopy
;
Kα shift
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
Notizen:
Abstract The characteristic features of the electronic structure of SbCl5L complexes has been studied in comparison with those of the SnCl4L2 and TiCl4L2 complexes. The results of X-ray structural analysis were correlated with the heats of complexation, the data of Mössbauer spectroscopy, derivatography, quantum-chemical PM3 calculations, and stretching frequencies of the donor-acceptor bonds. Based on these data, the contributions of different effects to the stabilities of complexes were determined, complexation enthalpies previously unknown were calculated, and a conclusion was drawn that the electron density transfer from the donor to the acceptor is small. The charge effect of the donor consists primarily in polarization of the acceptor bonds; this polarization decreases as a result of (he change in the geometry of the acceptor upon complexation. The relative stabilities of the complexes with dimethyl sulfide were determined using a unique internal standard technique.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01434219
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