The Coordination Chemistry of Phosphoryl Compounds Containing the — N(CH3)2 Group, Part VIII
Open Access
- 1 July 1972
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 27 (7) , 759-763
- https://doi.org/10.1515/znb-1972-0706
Abstract
A number of new solvates and adducts containing bisphenyldimethylaminophosphine oxide is reported. The solvates have the general formula M[(C6H5)2P(O)N(CH3)2]4 2+(anion-)2, in which M = Mg, Ca, Mn, Fe, Co, Ni, Cu, Zn and Cd, and the anions are ClO4 - and BF4 -. The adducts have the general formula M[(C6H5)2P(O)N(CH3)2]2Cl2, where M stands for the same series of metals. The compounds are characterized and identified by chemical analyses and physical measurements. Ligand-field and vibrational spectra have been investigated; values for the ligand-field parameters are reported. It is concluded that coordination takes place via the oxygen atom of the ligand. X-ray powder patterns were used in combination with ligand-field spectra to deduce the coordination around the metal ions. The interesting behaviour of the nickel (II) chloride adduct upon heating is discussed and it is shown that both a square pyramidal and a tetrahedral modification exists.Keywords
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