Pushkarevsky, Nikolay A. and Konchenko, Sergey N. and Zabel, Manfred and Bodensteiner, Michael and Scheer, Manfred (2011) Dimerization of pentanuclear clusters [Fe(3)Q(AsMe)(CO)(9)] (Q = Se, Te) as a conversion pathway to novel cubane-like aggregates. DALTON TRANSACTIONS, 40 (9). pp. 2067-2074. ISSN 1477-9226,
Full text not available from this repository. (Request a copy)Abstract
The first examples of carbonyl heterocubane-type clusters, [Fe-4(mu(3)-Q)(2)(mu(3)-AsMe)(2)(CO)(12)] (2, Q = Se (a), Te (b)), which simultaneously contain elements of group 15 and 16, were obtained by thermolysis of [Fe-3(mu(3)-Q)(mu(3)-AsMe)(CO)(9)] (1) in acetonitrile. The clusters 2 possess a cubic Fe(4)Q(2)As(2) core with alternating Fe and Q/As atoms. The coordination environment of the Fe atoms is close to octahedral, and those of Q or As atoms are tetrahedral, which determines the distorted cubic cluster core geometry. The second main products of thermolysis are the clusters [Fe-6(mu(3)-Q)(mu(4)-Q)(mu(4)-AsMe)(2)(CO)(12)] (3a,b), whose core contains double the elemental composition of the initial cluster 1. In the case of the Se-containing cluster two other minor products [Fe-4(mu(4)-Se)(mu(4)-SeAsMe)(CO)(12)] (4) and [Fe-3(mu(3)-AsMe)(2)(CO)(9)] (5) are formed. Based on the structures and properties of the products, a reaction route for the conversion of 1 into 2 is proposed, which includes the associative formation of the clusters 3 as intermediates, unlike the dissociative pathways previously known for the transformations of similar clusters of the type [Fe(3)Q(2)(CO)(9)].
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CHALCOGEN CARBONYL-COMPOUNDS; MOLECULAR-STRUCTURE; CRYSTAL-STRUCTURES; MIXED-CHALCOGENIDE; REDOX POTENTIALS; METAL-CLUSTERS; IRON; LIGANDS; REACTIVITY; CONSTRUCTION; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Chair Prof. Dr. Manfred Scheer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 29 Jun 2020 09:32 |
| Last Modified: | 29 Jun 2020 09:32 |
| URI: | https://pred.uni-regensburg.de/id/eprint/21548 |
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