Uncovering the Origin of Divergence in the CsM(CrO4)2 (M = La, Pr, Nd, Sm, Eu; Am) Family through Examination of the Chemical Bonding in a Molecular Cluster and by Band Structure Analysis

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From: Journal of the American Chemical Society(Vol. 140, Issue 5)
Publisher: American Chemical Society
Document Type: Report
Length: 93 words

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Abstract :

A series of f-block chromates, CsM(CrO4)2 (M=La, Pr, Nd, Sm, Eu; Am), are prepared revealing notable differences between the AmIII derivatives and their lanthanide analogs. The covalent contributions to bonding by the f orbitals are found to be more than twice as large in the AmIII chromate than in the SmIII and EuIII compounds, and even larger in magnitude than the Am-5f spinuorbit splitting in this system. The analysis indicates also that the AmuO covalency in [alpha]-CsAm(CrO4)2 is driven by the degeneracy of the 5f and 2p orbitals, and not by orbital overlap.

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Gale Document Number: GALE|A534914862