Self-Assembly of Cluster-Based Nanoscopic Supramolecules into One-Dimensional Coordination Polymers
Octahedral metal clusters [Nb6Cl12(CN)6]4−, (Mn(Salen))+ (or (Mn(7-MeSalen))+) (Salen = N,N′-ethylene-bis-(salicylidene)iminate) and ditopic organic linkers (4,4′-bpe (trans-1, 2-bis(4-pyridyl)-ethylene) or 4,4′-dpyo (4,4′-dipyridyl N,N′-dioxide)) self-assemble to form three cluster-based 1D coordin...
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Wiley
2009-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2009/579123 |
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| author | Jian-Jun Zhang Sergio Aarón Gamboa Barry Julian Davis Abdessadek Lachgar |
| author_facet | Jian-Jun Zhang Sergio Aarón Gamboa Barry Julian Davis Abdessadek Lachgar |
| author_sort | Jian-Jun Zhang |
| collection | DOAJ |
| description | Octahedral metal clusters [Nb6Cl12(CN)6]4−, (Mn(Salen))+ (or (Mn(7-MeSalen))+) (Salen = N,N′-ethylene-bis-(salicylidene)iminate) and ditopic organic linkers (4,4′-bpe (trans-1, 2-bis(4-pyridyl)-ethylene) or 4,4′-dpyo (4,4′-dipyridyl N,N′-dioxide)) self-assemble to form three cluster-based 1D coordination polymers: [Mn(Salen)(MeOH)2]2{(4,4′-dpyo)
[(Mn(Salen))2(Nb6Cl12(CN)6)]}·2MeOH
(1), {(4,4′-bpe)[(Mn(7-MeSalen))2(Mn(7-MeSalen)(H2O))2(Nb6Cl12(CN)6)]}·1.5MeCN·8H2O
(2), and
[(4,4′-bpe)(Mn(Salen)(H2O))2]{(4,4′-bpe)2[(Mn(Salen)(MeOH))2(Mn(Salen))2(Nb6Cl12(CN)6)][(Mn(Salen))2(Nb6Cl12(CN)6)]}·16H2O
(3). Single crystal X-ray diffraction analyses show that the frameworks of the three coordination polymers are built of heterotrimeric and/or heteropentameric supramolecular species linked by ditopic organic ligands. The framework of 1 consists of anionic chains built of heterotrimeric dianions [(Mn(Salen))2(Nb6Cl12(CN)6)]2− (T) linked by 4,4′-dpyo. The chains run along two directions ([0 2 −2] and [0 3 3]) leading to the formation of channels along the crystallographic (a) direction where the cations [Mn(Salen)(S)2]+ and solvent molecules are located. Also, 2 was reported earlier, it possesses a neutral 1D chain built of neutral heterpentameric supramolecules: [(Mn(7‐MeSalen))2(Mn(7‐MeSalen)(S))2(Nb6Cl12(CN)6)] (P) linked by 4,4′-bpe ligands. Hydrogen bonds between non-bridging cyanide ligands and coordinated solvent molecules connect the chains into 2D hydrogen-bonded frameworks. Finally, 3 features an anionic chain, built of alternating heterotrimers [(Mn(Salen))2(Nb6Cl12(CN)6)]2− and heteropentamers [(Mn(Salen)(S))2(Mn(Salen))2(Nb6Cl12(CN)6)] linked by the organic spacer 4,4′-bpe. The anionic charge is compensated by the in situe-assembled [Mn(Salen)(S)(4,4′‐bpe)Mn(Salen)(S)]2+ dimers. Magnetic measurements reveal that the Mn(III) ions are well isolated and only weak magnetic interactions are observed. The thermal stability of the three compounds was investigated. |
| format | Article |
| id | doaj-art-cdff8280f1414625bcaa656cd0fdbc49 |
| institution | OA Journals |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2009-01-01 |
| publisher | Wiley |
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| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-cdff8280f1414625bcaa656cd0fdbc492025-08-20T02:20:02ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422009-01-01200910.1155/2009/579123579123Self-Assembly of Cluster-Based Nanoscopic Supramolecules into One-Dimensional Coordination PolymersJian-Jun Zhang0Sergio Aarón Gamboa1Barry Julian Davis2Abdessadek Lachgar3Department of Chemistry, Wake Forest University, Winston-Salem, NC 27109, USADepartment of Chemistry, Wake Forest University, Winston-Salem, NC 27109, USADepartment of Chemistry, Wake Forest University, Winston-Salem, NC 27109, USADepartment of Chemistry, Wake Forest University, Winston-Salem, NC 27109, USAOctahedral metal clusters [Nb6Cl12(CN)6]4−, (Mn(Salen))+ (or (Mn(7-MeSalen))+) (Salen = N,N′-ethylene-bis-(salicylidene)iminate) and ditopic organic linkers (4,4′-bpe (trans-1, 2-bis(4-pyridyl)-ethylene) or 4,4′-dpyo (4,4′-dipyridyl N,N′-dioxide)) self-assemble to form three cluster-based 1D coordination polymers: [Mn(Salen)(MeOH)2]2{(4,4′-dpyo) [(Mn(Salen))2(Nb6Cl12(CN)6)]}·2MeOH (1), {(4,4′-bpe)[(Mn(7-MeSalen))2(Mn(7-MeSalen)(H2O))2(Nb6Cl12(CN)6)]}·1.5MeCN·8H2O (2), and [(4,4′-bpe)(Mn(Salen)(H2O))2]{(4,4′-bpe)2[(Mn(Salen)(MeOH))2(Mn(Salen))2(Nb6Cl12(CN)6)][(Mn(Salen))2(Nb6Cl12(CN)6)]}·16H2O (3). Single crystal X-ray diffraction analyses show that the frameworks of the three coordination polymers are built of heterotrimeric and/or heteropentameric supramolecular species linked by ditopic organic ligands. The framework of 1 consists of anionic chains built of heterotrimeric dianions [(Mn(Salen))2(Nb6Cl12(CN)6)]2− (T) linked by 4,4′-dpyo. The chains run along two directions ([0 2 −2] and [0 3 3]) leading to the formation of channels along the crystallographic (a) direction where the cations [Mn(Salen)(S)2]+ and solvent molecules are located. Also, 2 was reported earlier, it possesses a neutral 1D chain built of neutral heterpentameric supramolecules: [(Mn(7‐MeSalen))2(Mn(7‐MeSalen)(S))2(Nb6Cl12(CN)6)] (P) linked by 4,4′-bpe ligands. Hydrogen bonds between non-bridging cyanide ligands and coordinated solvent molecules connect the chains into 2D hydrogen-bonded frameworks. Finally, 3 features an anionic chain, built of alternating heterotrimers [(Mn(Salen))2(Nb6Cl12(CN)6)]2− and heteropentamers [(Mn(Salen)(S))2(Mn(Salen))2(Nb6Cl12(CN)6)] linked by the organic spacer 4,4′-bpe. The anionic charge is compensated by the in situe-assembled [Mn(Salen)(S)(4,4′‐bpe)Mn(Salen)(S)]2+ dimers. Magnetic measurements reveal that the Mn(III) ions are well isolated and only weak magnetic interactions are observed. The thermal stability of the three compounds was investigated.http://dx.doi.org/10.1155/2009/579123 |
| spellingShingle | Jian-Jun Zhang Sergio Aarón Gamboa Barry Julian Davis Abdessadek Lachgar Self-Assembly of Cluster-Based Nanoscopic Supramolecules into One-Dimensional Coordination Polymers Advances in Materials Science and Engineering |
| title | Self-Assembly of Cluster-Based Nanoscopic Supramolecules into One-Dimensional Coordination Polymers |
| title_full | Self-Assembly of Cluster-Based Nanoscopic Supramolecules into One-Dimensional Coordination Polymers |
| title_fullStr | Self-Assembly of Cluster-Based Nanoscopic Supramolecules into One-Dimensional Coordination Polymers |
| title_full_unstemmed | Self-Assembly of Cluster-Based Nanoscopic Supramolecules into One-Dimensional Coordination Polymers |
| title_short | Self-Assembly of Cluster-Based Nanoscopic Supramolecules into One-Dimensional Coordination Polymers |
| title_sort | self assembly of cluster based nanoscopic supramolecules into one dimensional coordination polymers |
| url | http://dx.doi.org/10.1155/2009/579123 |
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