Chemical environment effects on the Kß emission spectra in P compounds

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

CHEMICAL PHYSICS

Elsevier Science B.V.

Año: 2008 vol. 354 p. 80 - 85

0301-0104

Several clusters PO43- and P2O74- 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 PO43- 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.