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Müscher-Polzin P, Hauberg P, Näther C, Bensch W. Decoration of the [Nb 6O 19] 8– cluster shell with six Cu 2+-centred complexes generates the [(Cu(cyclen)) 6Nb 6O 19] 4+ moiety: room temperature synthesis, crystal structure and selected properties. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2023. [DOI: 10.1515/znb-2023-0302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Abstract
Mixing an aqueous solution of K8[Nb6O19]⋅16H2O with a DMSO/H2O solution of Cu(ClO4)2 · 6 H2O and cyclen at room temperature afforded crystallization of blue crystals of [(Cu(cyclen))6Nb6O19]⋅[ClO4]4·≈4H2O after slow evaporation of the solvents. The crystal structure contains the Lindqvist anion [Nb6O19]8– which is covalently expanded by six symmetry-related [Cu(cyclen)]2+ complexes via Nb-μ
2-O-Cu bridges yielding the positively charged [(Cu(cyclen))6Nb6O19]4+ cluster shell. The ClO4
− anions and crystal water molecules reside in the empty spaces of the packed clusters. The compound shows two electronic d-d transitions at energetic positions explaining the blue color.
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Affiliation(s)
- Philipp Müscher-Polzin
- Institute of Inorganic Chemistry, Christian-Albrechts-University of Kiel , Max-Eyth-Straße 2, 24118 Kiel , Germany
| | - Patrik Hauberg
- Institute of Inorganic Chemistry, Christian-Albrechts-University of Kiel , Max-Eyth-Straße 2, 24118 Kiel , Germany
| | - Christian Näther
- Institute of Inorganic Chemistry, Christian-Albrechts-University of Kiel , Max-Eyth-Straße 2, 24118 Kiel , Germany
| | - Wolfgang Bensch
- Institute of Inorganic Chemistry, Christian-Albrechts-University of Kiel , Max-Eyth-Straße 2, 24118 Kiel , Germany
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Müscher‐Polzin P, Poschmann M, Näther C, Bensch W. Room Temperature Synthesis of [Pd(cyclam)]
5
{H
3
Nb
6
O
19
}
2
⋅ 26H
2
O: a Suitable Precursor for the
in‐situ
Generation of a Highly Active Catalyst for Light‐Driven Hydrogen Evolution. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Philipp Müscher‐Polzin
- Institute of Inorganic Chemistry Christian-Albrechts-University of Kiel Max-Eyth-Str. 2 24118 Kiel Germany
| | - Michael Poschmann
- Institute of Inorganic Chemistry Christian-Albrechts-University of Kiel Max-Eyth-Str. 2 24118 Kiel Germany
- Max Planck Institute for Chemical Energy Conversion Department of Heterogeneous Reactions Stiftstraße 34–36 45470 Mülheim an der Ruhr Germany
| | - Christian Näther
- Institute of Inorganic Chemistry Christian-Albrechts-University of Kiel Max-Eyth-Str. 2 24118 Kiel Germany
| | - Wolfgang Bensch
- Institute of Inorganic Chemistry Christian-Albrechts-University of Kiel Max-Eyth-Str. 2 24118 Kiel Germany
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State-of-the-art advances in the structural diversities and catalytic applications of polyoxoniobate-based materials. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213966] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Müscher-Polzin P, Näther C, Bensch W. Hexaniobate anions connected by [Ni(cyclam)] 2+ complexes yield two interpenetrating three-dimensional networks. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2020. [DOI: 10.1515/znb-2020-0043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Syntheses were performed at room temperature using Ni(NO3)2·6H2O, cyclam (cyclam = 1,4,8,11-tetraazacyclotetradecane) and the precursors Li8[Nb6O19]· ≈22H2O or Na7[HNb6O19]·15H2O in a DMSO-H2O mixture. Yellow crystals of the new compound {[Ni(cyclam)]2H4Nb6O19}·12H2O could be obtained after one week applying the Li+ or Na+ salt as starting materials. The crystal structure is unique in polyoxoniobate (PONb) chemistry and displays two interpenetrating three-dimensional (3D) networks. The [Nb6O19]8– anion is expanded by four Ni2+ centered complexes via Ni–O bonds to terminal O2− anions of the hexaniobate anion. The 3D networks are generated by further Ni–O bond formation between neighboring [Nb6O19]8− anions. The remaining void space is occupied by H2O molecules which form a water cluster.
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Affiliation(s)
- Philipp Müscher-Polzin
- Institut für Anorganische Chemie , Christian-Albrechts-Universität zu Kiel , Max-Eyth-Straße 2 , 24118 Kiel , Germany
| | - Christian Näther
- Institut für Anorganische Chemie , Christian-Albrechts-Universität zu Kiel , Max-Eyth-Straße 2 , 24118 Kiel , Germany
| | - Wolfgang Bensch
- Institut für Anorganische Chemie , Christian-Albrechts-Universität zu Kiel , Max-Eyth-Straße 2 , 24118 Kiel , Germany
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