Polimorfismo ace

Electronic Energy Levels in the Trivalent Lanthanide Aquo Ions. I.
Pr3+, Nd3+, Pm3+, Sm3+, Dy3+, Ho3+, Er3+, and Tm3+
W. T. Carnall, P. R. Fields, and K. Rajnak
Citation: J. Chem. Phys. 49, 4424 (1968); doi: 10.1063/1.1669893
View online: http://dx.doi.org/10.1063/1.1669893
View Table of Contents: http://jcp.aip.org/resource/1/JCPSA6/v49/i10
Published by the American Institute of Physics.

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T 'HE J OURNAL O F C HEMICAL P HYSICS

V OLUME 4 9, N UMBER 1 0

1 5 N OVEMBER 1 968

Electronic Energy Levels i n t he Trivalent Lanthanide Aquo Ions.
I P rH, N d H, P mH, S m H , D yH, HOH, E r3+, a nd T m3 +*

.

W. T.

CARNALL,

P. R.

F IELDS, AND

K.

R AJNAKt

Chemistry Division, Argonne National Laboratory, Argonne, I ninois
(Received 2 April 1968)
T he free-ion energy-level schemes of t he PtJ+, N d3+, P m3+, S m3+, Dya+, Hoa+, EtJ+, a nd Tm3+ a quo ions have been determined from their absorption spectra i n d ilute acid solution a t 25°. Energy-level assignments were m ade b y comparison w ith c rystal spectra, a nd o n t he basis of correlations between calculated a nd observed b and intensities. F or m ost of t he ions, i t was possible to identify several transitions giving rise t o b ands a t energies as high as 45 000-50 000 c m-1 • Sufficient numbers of assignments were m ade t o j ustify inclusion of t he effects of configuration interaction i n t he calculation of the energy-level parameters. Variation of t he electrostatic, s pin-orbit coupling, a nd configuration-interaction parameters across t he l anthanide
series