Mathur, Pradeep ; Manimaran, Bala ; Trivedi, Rajiv ; Satyanarayana, Chilukuri V. V. ; Chadha, Raj K. (1998) Addition of propargyl groups to [Fe2(CO)6(μ-E2)] (E = S, Se, Te) and reactions of [Fe2(CO)6(μ-ECH2C ≡ CH)2] (E = S, Se) with Co2(CO)8; crystal structures of [Fe2(CO)6(μ-SeCH2 ≡ CH)2], [Fe2(CO)6{(μ-SCH2C:CH)Co2(CO)6}2] and [Fe2(CO)6{(μ-SeCH2C:CH)Co2(CO)6}2] Journal of Cluster Science, 9 (1). pp. 45-62. ISSN 1040-7278
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Official URL: http://www.springerlink.com/content/h97224775260p6...
Related URL: http://dx.doi.org/10.1023/A:1022677422599
Abstract
The dianionic compounds [Fe2(CO)6E2]2− (E=S, Se, or Te) show contrasting reactivitites toward propargyl bromide. When E=S or Se, [Fe2(CO)6(μ-ECH2C≡CH)2] are isolated from the reactions of [Fe2(CO)6E2]2− with propargyl bromide. The S-compound [Fe2(CO)6(μ-SCH2C≡CH)2] is isolated in only one isomeric form (a, e) in which the two moieties have different orientations, whereas the Se-compound is isolated in two isomeric forms, (a, e) and (e, e). Reaction of [Fe2(CO)6Te2]2− with propargyl bromide yields , which also exists in two isomeric forms. Room temperature reactions [Fe2(CO)6{(μ-ECH2C≡CH)2] of with two equivalents of Co2(CO)8 yielded [Fe2(CO)6{(μ-ECH2C≡CH)CO2(CO)6}2] (E=S, a, e isomer; E=Se, a, e and e, e isomers. All new compounds were characterised by IR and 1H, 13C, 77Se, and l25Te NMR spectroscopy. Structures of [Fe2(CO)6(μ-SeCH2C≡CH)2] (e, e), [Fe2(CO)6{(μ-SCH2C≡CH)CO2(CO)6}2] (a, e), and [Fe2(CO)6{(μ-SeCH2C≡CH)CO2(CO)6}2](e ,e), were further established by single crystal X-ray diffraction methods.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Springer. |
| Keywords: | Heterometallic; Propargyl; Iron; Cobalt; X-ray Structure Analysis |
| ID Code: | 83075 |
| Deposited On: | 16 Feb 2012 07:53 |
| Last Modified: | 16 Feb 2012 07:53 |
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