Abstract
Laser Raman spectra of uranyl tetrachloride complexes [K2UO2Cl4, Rb2UO2Cl4, Cs2UO2Cl4, (NH4)2UO2Cl4] have been measured in the region from 3500 to 10 cm−1. Vibrational assignments as well as normal coordinate analyses have been carried out with the assumption that all the complexes contain discrete (UO2Cl4)2− ions belonging to a point group D4h. To understand the nature of the uranyl bonds in the complexes, approximate π-bonding energies of such bonds have been estimated from the U—O stretching force constants. The reliability of the values obtained are discussed in detail on the basis of Mulliken's magic formula.
Keywords
Get full access to this article
View all access options for this article.
References
1.
Ohwada
K.
, Spectrochim. Acta 31A , 973 (1975 ).
2.
Ohwada
K.
, J. Inorg. Nucl. Chem. 40 , 1369 (1978 ).
3.
Shimanouchi
T.
, Pure Appl. Chem. 7 , 131 (1963 ).
4.
Hall
D.
Rae
A. D.
, and
Waters
T. N.
, Acta Crystallogr. 20 , 160 (1966 ).
5.
Jones
L. H.
, Spectrochim. Acta 10 , 395 (1958 ).
6.
Jones
L. H.
, Spectrochim. Acta 11 , 409 (1959 ).
7.
Hiraishi
J.
Nakagawa
I.
, and
Shimanouchi
T.
, Spectrochim. Acta 20 , 819 (1964 ).
8.
Ohwada
K.
, J. Inorg. Nucl. Chem. 33 , 1615 (1971 ); 34, 2357 (1972 ).
9.
Ohwada
K.
, J. Coord. Chem. 6 , 75 (1976 ).
10.
Ohwada
K.
, Spectrochim. Acta 35A , 99 (1979 ).
11.
McGlynn
S. P.
and
Smith
J. K.
, J. Mol. Spectrosc. 6 , 164 (1961 ).
12.
Ohwada
K.
, J. Coord. Chem. 8 , 35 (1978 ).
13.
Mulliken
R. S.
, J. Phys. Chem. 56 , 295 (1952 ).
14.
Wolfsberg
M.
and
Helmholz
L.
, J. Chem. Phys. 20 , 837 (1952 ).
15.
Hoffmann
R.
, J. Chem. Phys. 39 , 1397 (1963 ).
16.
Walch
P. F.
and
Ellis
D. E.
, J. Chem. Phys. 65 , 2387 (1976 ).
17.
Ohwada
K.
, Spectrochim. Acta in press.