Structural features of the crystalline iodide complexes of some rare-earth elements with carbamide and acetamide |
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| Authors: | D?V?Golubev D?V?Albov V?V?Kravchenko L?Yu?Alikberova Email author" target="_blank">N?S?RukkEmail author |
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| Institution: | 1.Lomonosov State Academy of Fine Chemical Technology,Moscow,Russia;2.Moscow State University,Leninskie gory, Moscow,Russia |
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| Abstract: | New acetamide and carbamide complexes LnI3 · 4Ur · 4H2O (Ln = La, Eu, Dy, Ho, Y; Ur is carbamide) and LnI3 · 4AA · 4H2O (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(H2O)4]I3 (Ln = La, Nd, Eu, Gd, Dy, Ho, Er; L = AA, Ur). |
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