Biuret complexes of lanthanum bromide and gadolinium iodide
We present the synthesis of new biuret complexes NH2CONHCONH2 (BU), PrBr3·2BU·4H2O (I) and HoBr3·2BU·4H2O (II), and the results of X-ray diffraction analysis. In the crystals of I and II we find complex cations [Ln(H2O)4(BU)4]3+ (Ln = La, Gd) and uncoordinated halogenide ions existing in the externa...
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| Format: | Article |
| Language: | Russian |
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MIREA - Russian Technological University
2015-02-01
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| Series: | Тонкие химические технологии |
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| Online Access: | https://www.finechem-mirea.ru/jour/article/view/220 |
| _version_ | 1826565719417946112 |
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| author | L. Yu. Alikberova T. A. Antonenko D. V. Albov |
| author_facet | L. Yu. Alikberova T. A. Antonenko D. V. Albov |
| author_sort | L. Yu. Alikberova |
| collection | DOAJ |
| description | We present the synthesis of new biuret complexes NH2CONHCONH2 (BU), PrBr3·2BU·4H2O (I) and HoBr3·2BU·4H2O (II), and the results of X-ray diffraction analysis. In the crystals of I and II we find complex cations [Ln(H2O)4(BU)4]3+ (Ln = La, Gd) and uncoordinated halogenide ions existing in the external sphere. Biuret molecules serve as bidentate ligands (through the oxygen atoms) and are transformed from the original trans- to cis-configuration. The coordination polyhedron is a distorted square antiprism. These compounds have one or two non-coordinated molecules of water and one non-coordinated BU molecule (II) existing in the external sphere, which are joined with the halogenide ions by hydrogen bonds. |
| first_indexed | 2024-04-10T03:29:48Z |
| format | Article |
| id | doaj.art-7578e49d3aed41098c033318229c3143 |
| institution | Directory Open Access Journal |
| issn | 2410-6593 2686-7575 |
| language | Russian |
| last_indexed | 2025-03-14T10:40:13Z |
| publishDate | 2015-02-01 |
| publisher | MIREA - Russian Technological University |
| record_format | Article |
| series | Тонкие химические технологии |
| spelling | doaj.art-7578e49d3aed41098c033318229c31432025-03-02T10:57:32ZrusMIREA - Russian Technological UniversityТонкие химические технологии2410-65932686-75752015-02-011016671214Biuret complexes of lanthanum bromide and gadolinium iodideL. Yu. Alikberova0T. A. Antonenko1D. V. Albov2M.V. Lomonosov Moscow State University of Fine Chemical Technologies, 86, Vernadskogo pr., Moscow 119571M.V. Lomonosov Moscow State University, Moscow, 119991M.V. Lomonosov Moscow State University, Moscow, 119991We present the synthesis of new biuret complexes NH2CONHCONH2 (BU), PrBr3·2BU·4H2O (I) and HoBr3·2BU·4H2O (II), and the results of X-ray diffraction analysis. In the crystals of I and II we find complex cations [Ln(H2O)4(BU)4]3+ (Ln = La, Gd) and uncoordinated halogenide ions existing in the external sphere. Biuret molecules serve as bidentate ligands (through the oxygen atoms) and are transformed from the original trans- to cis-configuration. The coordination polyhedron is a distorted square antiprism. These compounds have one or two non-coordinated molecules of water and one non-coordinated BU molecule (II) existing in the external sphere, which are joined with the halogenide ions by hydrogen bonds.https://www.finechem-mirea.ru/jour/article/view/220complexes, structure, biuret, lanthanum, gadolinium, bromide, iodide, hydrogen bond |
| spellingShingle | L. Yu. Alikberova T. A. Antonenko D. V. Albov Biuret complexes of lanthanum bromide and gadolinium iodide Тонкие химические технологии complexes, structure, biuret, lanthanum, gadolinium, bromide, iodide, hydrogen bond |
| title | Biuret complexes of lanthanum bromide and gadolinium iodide |
| title_full | Biuret complexes of lanthanum bromide and gadolinium iodide |
| title_fullStr | Biuret complexes of lanthanum bromide and gadolinium iodide |
| title_full_unstemmed | Biuret complexes of lanthanum bromide and gadolinium iodide |
| title_short | Biuret complexes of lanthanum bromide and gadolinium iodide |
| title_sort | biuret complexes of lanthanum bromide and gadolinium iodide |
| topic | complexes, structure, biuret, lanthanum, gadolinium, bromide, iodide, hydrogen bond |
| url | https://www.finechem-mirea.ru/jour/article/view/220 |
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