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- W2082035052 endingPage "507" @default.
- W2082035052 startingPage "477" @default.
- W2082035052 abstract "A number of new solvates and adducts containing hexamethylphosphoramide is reported. The solvates have the general formula M{[(CH3)2N]3PO}4 2+(anion)22−, in which M = Mg, Ca, Sr, Mn, Fe, Co, Ni, Zn and Cd and the anions are BF4−, ClO4− and B(C6H5)4−. The adducts have the general formula M(anion)n {[(CH3)2N]3PO}m, in which M = Mg, Ca, Sr, Ba, Mn, Fe, Co, Ni, Cu, Zn, Cd, Al, Cr, Fe, Mo, n = 1 − 3, m = 1/2 − 5 and the anions are Cl−, Br−, I−, NO3−, NCS−, CH3COO− and SO42−. The compounds are characterized and identified by chemical analysis and physical measurements. Infrared spectra in the region 4000-200 cm−1 have been investigated. The shift towards lower wave numbers in the P-O stretching frequency and towards higher wave numbers in the P-O bending frequency of the complexes is discussed. It is concluded, as has been suggested by other workers, that coordination takes place via the oxygen atom. A tentative assignment for the other ligand bands is proposed. Ligand-field spectra for the complexes of Mn(II), Fe(II), Co(II), Ni(II), Cu(II), Cr(III) and Mo(III) have been investigated. Adapted values for Dq and B are reported and the ligand is placed in the spectrochemical and nephelauxetic series. In agreement with results obtained by other workers it is concluded that if the anions are present as uncoordinated ions, or participate in the coordination as monodentate ligands, hexamethylphosphoramide has a tendency to form tetrahedrally surrounded complexes. With potential polydentate anions octahedrally surrounded cations are mostly found." @default.
- W2082035052 created "2016-06-24" @default.
- W2082035052 creator A5023462879 @default.
- W2082035052 creator A5055633485 @default.
- W2082035052 date "2010-09-02" @default.
- W2082035052 modified "2023-09-28" @default.
- W2082035052 title "The Coordination chemistry of hexamethylphosphoramide" @default.
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