About products of interaction of holmium chloride and bromide with carbamide
The synthesis and data of the study of new complexes of samarium bromides with carbamide, [Ho(Ur)4(H2O)4]Br3 (I), [Ho(Ur)6(H2O)2]Br3 (II) and [Ho(Ur)4Cl3] (III), by IR spectroscopy and X-ray diffraction analysis are presented. For these compounds, coordination with metal occurs through the oxygen at...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | Russian |
| Published: |
MIREA - Russian Technological University
2012-04-01
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| Series: | Тонкие химические технологии |
| Subjects: | |
| Online Access: | https://www.finechem-mirea.ru/jour/article/view/748 |
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| Summary: | The synthesis and data of the study of new complexes of samarium bromides with carbamide, [Ho(Ur)4(H2O)4]Br3 (I), [Ho(Ur)6(H2O)2]Br3 (II) and [Ho(Ur)4Cl3] (III), by IR spectroscopy and X-ray diffraction analysis are presented. For these compounds, coordination with metal occurs through the oxygen atoms of the water and carbamide molecules. The coordination polyhedra for I and II are distorted tetragonal antiprisms. In III, we have found inner-sphere coordination of four carbamide molecules and three chloride ions (the coordination polyhedron is a pentagonal bipyramid). The coordination of four carbamide molecules in I-III does not change their planar structures, but in II two carbamide ligands are distorted. Many hydrogen bonds are observed in the structures of complexes I-III. |
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| ISSN: | 2410-6593 2686-7575 |