Abstract
The reactions of appropriate ratios of K2TeO3 and [Mn2(CO)10] in superheated methanol solutions lead to a series of novel cluster anions [Te4Mn3(CO)10]- (1), [Te2Mn3(CO)9]2- (2), [Te2Mn3(CO)9]- (3), and [Te2Mn4- (CO)12]2- (4). When cluster 1 is treated with [Mn2(CO)10]/KOH in methanol, paramagnetic cluster 2 is formed in moderate yield. Cluster 2 is oxidized by [Cu(MeCN)4]BF4 to give the closo-cluster [Te2Mn3(CO)9]- (3), while treatment of 2 with [Mn2(CO)10]/KOH affords the closo-cluster 4. IR spectroscopy showed that cluster 1 reacted with [Mn2(CO)10] to give cluster 4 via cluster 2. Clusters 1-4 were structurally characterized by spectroscopic methods or/and X-ray analyses. The core structure of 1 can be described as two [Mn(CO)3] groups doubly bridged by two Te2 fragments in a μ2-η2 fashion. Both [Mn(CO)3] groups are further coordinated to one [Mn(CO)4] moiety. Cluster 2 is a 49 e- species with a square-pyramidal core geometry. While cluster 3 displays a trigonal-bipyramidal metal core, cluster 4 possesses an octahedral core geometry.
Original language | English |
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Pages (from-to) | 3152-3158 |
Number of pages | 7 |
Journal | Chemistry - A European Journal |
Volume | 7 |
Issue number | 14 |
DOIs | |
Publication status | Published - 2001 Jul 16 |
Keywords
- Bridging ligands
- Carbonyl ligands
- Cluster compounds
- Manganese
- Tellurium
ASJC Scopus subject areas
- Catalysis
- Organic Chemistry
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Dive into the research topics of 'Tellurium-bridged manganese carbonyl clusters: Synthesis and structural transformations of [Te4Mn3(CO)10]-, [Te2Mn3(CO)9]2-, [Te2Mn3(CO)9]-, and [Te2Mn4(CO)12]2-'. Together they form a unique fingerprint.Datasets
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CCDC 154901: Experimental Crystal Structure Determination
Shieh, M. (Creator), Chen, H. (Creator), Yang, H. (Creator), Lin, S. (Creator) & Ueng, C. (Creator), Cambridge Crystallographic Data Centre, 2001
DOI: 10.5517/cc565tb, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/cc565tb&sid=DataCite
Dataset
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CCDC 105669: Experimental Crystal Structure Determination
Shieh, M. (Creator), Chen, H. (Creator), Yang, H. (Creator) & Ueng, C. (Creator), Cambridge Crystallographic Data Centre, 1999
DOI: 10.5517/cc3jyp7, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/cc3jyp7&sid=DataCite
Dataset
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CCDC 154902: Experimental Crystal Structure Determination
Shieh, M. (Contributor), Chen, H. (Contributor), Yang, H. (Contributor), Lin, S. (Contributor) & Ueng, C. (Contributor), Cambridge Crystallographic Data Centre, 2001
DOI: 10.5517/cc565vc, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/cc565vc&sid=DataCite
Dataset