Cluster Salts [Nb6Cl12(HIm)6]An (with HIm=1H‐imidazole and A=Mineral Acid Anion, n=1 or 2) Made in and with Brønsted‐basic Ionic Liquids and Liquid Mixtures
Abstract Four new hexanuclear niobium cluster compounds of the general formula [Nb6Cl12(HIm)6](A)n ⋅ x(solvent molecule) (HIm=1H‐imidazole, A=mineral acid anion, Cl− (n=2) (1), (SO4)2− (n=1) (2), (CrO4)2− (n=1) (3), and (HAsO4)2− (n=1) (4)) were prepared. Their synthesis can be done in basic ionic l...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2021-02-01
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| Series: | ChemistryOpen |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/open.202000266 |
| _version_ | 1818645390974517248 |
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| author | Dr. Eric Sperlich Prof. Dr. Martin Köckerling |
| author_facet | Dr. Eric Sperlich Prof. Dr. Martin Köckerling |
| author_sort | Dr. Eric Sperlich |
| collection | DOAJ |
| description | Abstract Four new hexanuclear niobium cluster compounds of the general formula [Nb6Cl12(HIm)6](A)n ⋅ x(solvent molecule) (HIm=1H‐imidazole, A=mineral acid anion, Cl− (n=2) (1), (SO4)2− (n=1) (2), (CrO4)2− (n=1) (3), and (HAsO4)2− (n=1) (4)) were prepared. Their synthesis can be done in basic ionic liquids, which form on the addition of a mineral acid, which also delivers the counter anion for the final cluster compound, to an excess of the 1H‐imidazole. Some addition of an auxiliary solvent, like methanol, improves the speed of crystallisation. The cluster unit comprises a hexanuclear Nb6 unit of octahedral shape with the edges bridged by Cl atoms and the exo sites being occupied by N‐bonded 1H‐imidazole ligands. The cluster cation carries sixteen cluster‐based electrons. Between the NH groups of the ligands of the cluster unit, the anions and the co‐crystallised water (1), or 1H‐imidazole and methanol molecules (2, 3, and 4) a network of hydrogen bonds exists. |
| first_indexed | 2024-12-17T00:30:00Z |
| format | Article |
| id | doaj.art-88b70bdca630411991b94429c2ce5322 |
| institution | Directory Open Access Journal |
| issn | 2191-1363 |
| language | English |
| last_indexed | 2024-12-17T00:30:00Z |
| publishDate | 2021-02-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | ChemistryOpen |
| spelling | doaj.art-88b70bdca630411991b94429c2ce53222022-12-21T22:10:22ZengWiley-VCHChemistryOpen2191-13632021-02-0110224825410.1002/open.202000266Cluster Salts [Nb6Cl12(HIm)6]An (with HIm=1H‐imidazole and A=Mineral Acid Anion, n=1 or 2) Made in and with Brønsted‐basic Ionic Liquids and Liquid MixturesDr. Eric Sperlich0Prof. Dr. Martin Köckerling1Universität Rostock Institut für Chemie Anorganische Festkörperchemie Albert-Einstein-Str. 3a 18059 Rostock GermanyUniversität Rostock Institut für Chemie Anorganische Festkörperchemie Albert-Einstein-Str. 3a 18059 Rostock GermanyAbstract Four new hexanuclear niobium cluster compounds of the general formula [Nb6Cl12(HIm)6](A)n ⋅ x(solvent molecule) (HIm=1H‐imidazole, A=mineral acid anion, Cl− (n=2) (1), (SO4)2− (n=1) (2), (CrO4)2− (n=1) (3), and (HAsO4)2− (n=1) (4)) were prepared. Their synthesis can be done in basic ionic liquids, which form on the addition of a mineral acid, which also delivers the counter anion for the final cluster compound, to an excess of the 1H‐imidazole. Some addition of an auxiliary solvent, like methanol, improves the speed of crystallisation. The cluster unit comprises a hexanuclear Nb6 unit of octahedral shape with the edges bridged by Cl atoms and the exo sites being occupied by N‐bonded 1H‐imidazole ligands. The cluster cation carries sixteen cluster‐based electrons. Between the NH groups of the ligands of the cluster unit, the anions and the co‐crystallised water (1), or 1H‐imidazole and methanol molecules (2, 3, and 4) a network of hydrogen bonds exists.https://doi.org/10.1002/open.202000266clusterionic liquidstructure elucidationheterocyclic ligandNiobium |
| spellingShingle | Dr. Eric Sperlich Prof. Dr. Martin Köckerling Cluster Salts [Nb6Cl12(HIm)6]An (with HIm=1H‐imidazole and A=Mineral Acid Anion, n=1 or 2) Made in and with Brønsted‐basic Ionic Liquids and Liquid Mixtures ChemistryOpen cluster ionic liquid structure elucidation heterocyclic ligand Niobium |
| title | Cluster Salts [Nb6Cl12(HIm)6]An (with HIm=1H‐imidazole and A=Mineral Acid Anion, n=1 or 2) Made in and with Brønsted‐basic Ionic Liquids and Liquid Mixtures |
| title_full | Cluster Salts [Nb6Cl12(HIm)6]An (with HIm=1H‐imidazole and A=Mineral Acid Anion, n=1 or 2) Made in and with Brønsted‐basic Ionic Liquids and Liquid Mixtures |
| title_fullStr | Cluster Salts [Nb6Cl12(HIm)6]An (with HIm=1H‐imidazole and A=Mineral Acid Anion, n=1 or 2) Made in and with Brønsted‐basic Ionic Liquids and Liquid Mixtures |
| title_full_unstemmed | Cluster Salts [Nb6Cl12(HIm)6]An (with HIm=1H‐imidazole and A=Mineral Acid Anion, n=1 or 2) Made in and with Brønsted‐basic Ionic Liquids and Liquid Mixtures |
| title_short | Cluster Salts [Nb6Cl12(HIm)6]An (with HIm=1H‐imidazole and A=Mineral Acid Anion, n=1 or 2) Made in and with Brønsted‐basic Ionic Liquids and Liquid Mixtures |
| title_sort | cluster salts nb6cl12 him 6 an with him 1h imidazole and a mineral acid anion n 1 or 2 made in and with bronsted basic ionic liquids and liquid mixtures |
| topic | cluster ionic liquid structure elucidation heterocyclic ligand Niobium |
| url | https://doi.org/10.1002/open.202000266 |
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