Structural organization of silver(I) complexes with O,O′-dialkyl dithiophosphates: Solid-state 13C and 31P CP/MAS NMR and single-crystal X-ray diffraction studies.

Autor: A. Ivanov, S. Zinkin, A. Gerasimenko, O. Antzutkin, W. Forsling
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Zdroj: Russian Journal of Coordination Chemistry; Jan2007, Vol. 33 Issue 1, p20-31, 12p
Abstrakt: Abstract??Silver(I) complexes with four symmetrically substituted O,O?-dialkyl derivatives of dithiophosphoric acid of the general formula [Ag{S2P(OR)2}]n(R = C2H5,i-C3H7, C4H9, ands-C4H9) were obtained. Their structures and spectroscopic characteristics were studied by solid-state13C and31P CP/MAS NMR spectroscopy and X-ray diffraction analysis. The parameters of the anisotropy of the31P chemical shift31P-?anisoand ? (?anisois the chemical shift anisotropy and ? is the asymmetry parameter) calculated from the diagrams of thex2-statistic revealed that the (RO)2PS2groups act as bridging ligands in all the silver(I) complexes obtained. The hexanuclear complex [Ag6{S2P(O-i-C3H7)2}6] was found to form two modifications ? and ?. According to the X-ray diffraction data, the silver(I) complex with O,O?-di-s-butyl dithiophosphate exists as discrete hexanuclear molecules [Ag6{S2P(O-s-C4H9)2}6]. In the clear molecules ?-[Ag6{S2P(O-i-C3H7)2}6], the signals for the phosphorus atoms were assigned to their positions determined from the X-ray diffraction data. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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