Abstract
A facile synthesis of the novel selenium-capped trimolybdenum and tritungsten ring carbonyl clusters [Se2M3(CO) 10]2- (M = Mo, 1; W, 4) have been achieved. The selenium-capped trimolybdenum cluster compound [Et4N] 2[Se2Mo3(CO)10] ([Et 4N]2[1]) can be obtained from the reaction of the trichromium cluster compound [Et4N]2[Se2Cr 3(CO)10] with 4 equiv. of Mo(CO)6 in refluxing acetone. On the other hand, when [Et4N]2[Se 2Cr3(CO)10] reacted with 4 equiv. of W(CO) 6 in refluxing acetone, the planar cluster compound [Et 4N]2[Se2W4(CO)18] ([Et4N]2[3]) was isolated, which could further transform to the tritungsten cluster compound [Et4N]2[Se 2W3(CO)10] ([Et4N]2[4]) in good yield. Alternatively, clusters 1 and 4 could be formed from the reactions of the monosubstituted products [Et4N]2[Se 2Cr2M(CO)10] (M = Mo; W, [Et4N] 2[2]) with 3 equiv. of M(CO)6 in acetone, respectively. Complexes 1-4 are fully characterized by IR, 77Se NMR spectroscopy, and single-crystal X-ray analysis. Clusters 1, 2, and 4 are isostructural and each display a trigonal bipyramidal structure with a homometallic M3 ring (M = Mo, 1; W, 4) or a heterometallic Cr2W ring that is further capped above and below by μ3-Se atoms. Further, the intermediate planar complex 3 exhibits a Se2W2 square with each Se atom externally coordinated to one W(CO)5 group. This paper describes a systematic route to a series of selenium-capped trimetallic carbonyl clusters and the formation and the structural features of the resultant clusters are discussed.
Original language | English |
---|---|
Pages (from-to) | 966-974 |
Number of pages | 9 |
Journal | Journal of Organometallic Chemistry |
Volume | 691 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2006 Feb 15 |
Keywords
- Carbonyl
- Cluster
- Molybdenum
- Selenium
- Tungsten
ASJC Scopus subject areas
- Biochemistry
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry
- Materials Chemistry
Fingerprint
Dive into the research topics of 'Selenium-capped trimolybdenum and tritungsten carbonyl clusters [Se 2M3(CO)10]2- (M = Mo, W)'. Together they form a unique fingerprint.Datasets
-
CCDC 281315: Experimental Crystal Structure Determination
Hsu, M. (Creator), Miu, C. (Creator), Lin, Y. (Creator) & Shieh, M. (Creator), Unknown Publisher, 2006
DOI: 10.5517/cc9fqp3, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/cc9fqp3&sid=DataCite
Dataset
-
CCDC 281314: Experimental Crystal Structure Determination
Hsu, M. (Creator), Miu, C. (Creator), Lin, Y. (Creator) & Shieh, M. (Creator), Unknown Publisher, 2006
DOI: 10.5517/cc9fqn2, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/cc9fqn2&sid=DataCite
Dataset
-
CCDC 281317: Experimental Crystal Structure Determination
Hsu, M. (Creator), Miu, C. (Creator), Lin, Y. (Creator) & Shieh, M. (Creator), Unknown Publisher, 2006
DOI: 10.5517/cc9fqr5, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/cc9fqr5&sid=DataCite
Dataset