Chemical environment effects on the Kb emission spectra in P compounds

S. CEPPI; G. TIRAO; G. STUTZ; J. A. RIVEROS

CHEMICAL PHYSICS

ELSEVIER

Lugar: Nueva York; Año: 2008 vol. 354 p. 80 - 85

0301-0104

Several clusters (PO4)3- y (P2O7)4- were studied in different chemical environment by measuring the Kb1,3, Kbx and Kb´ lines from P-Kb emission spectrum. The Kb spectrum structures were analyzed from its relation with its chemical environment. In this paper, the cation influence and the cation substitution with H on satellite Kb´ line parameters were also studied. It was found that this line allows the light ligand atom to be identified and also the number of H bonds with the (PO4)3- cluster be characterized. Besides cation influence on the P-Kb spectrum, it can be showed that this influence is smaller than the ligand atom and cation-H substitution. Theoretical spectra were obtained by using the DV-Xa method in order to compare it the experimental data and to interpret the Kb line structure in terms of molecular orbital theory.