Structural features of the crystalline iodide complexes of some rare-earth elements with carbamide and acetamide

New acetamide and carbamide complexes LnI 3 · 4Ur · 4H 2 O (Ln = La, Eu, Dy, Ho, Y; Ur is carbamide) and LnI 3 · 4AA · 4H 2 O (Ln = Nd, Eu, Dy, Ho, Y; AA is acetamide) are synthesized. The complexes are characterized by the data of chemical analysis, IR spectroscopy, and X-ray diffraction analysis....

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Bibliographic Details
Published inRussian journal of coordination chemistry Vol. 36; no. 11; pp. 820 - 827
Main Authors Golubev, D. V., Albov, D. V., Kravchenko, V. V., Alikberova, L. Yu, Rukk, N. S.
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 01.11.2010
Subjects
Chemistry
Chemistry and Materials Science
Inorganic Chemistry
Physical Chemistry
Clath Rate
Carbamide Complex
Acetamide
Coordination Chemistry
Tetrad Effect
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Summary:New acetamide and carbamide complexes LnI 3 · 4Ur · 4H 2 O (Ln = La, Eu, Dy, Ho, Y; Ur is carbamide) and LnI 3 · 4AA · 4H 2 O (Ln = Nd, Eu, Dy, Ho, Y; AA is acetamide) are synthesized. The complexes are characterized by the data of chemical analysis, IR spectroscopy, and X-ray diffraction analysis. The ligands (water, carbamide, and acetamide molecules) are coordinated by the rare-earth element atoms through the oxygen atom, and the coordination polyhedron is a distorted square antiprism. The iodide ions are not coordinated and are located in the external sphere. The structural characteristics of the complexes are compared in the series [Ln(L) 4 (H 2 O) 4 ]I 3 (Ln = La, Nd, Eu, Gd, Dy, Ho, Er; L = AA, Ur).
ISSN:1070-3284
1608-3318
DOI:10.1134/S1070328410110060