Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/xmlui/handle/10054/12350
Title: Iron Pentacarbonyl Promoted Addition of CO and MeOH to 1,4-Disubstituted-1,3-butadiyne and Formation of Vinylallyl and Butatriene Ligand Systems
Authors: MATHUR, P
AVASARE, VD
MOBIN, SM
Keywords: Ruthenium Cluster Carbonyls
X-Ray
Electrochemical Responses
Triruthenium Cluster
Photochemical Route
Crystal-Structure
Complexes
Diynes
Coordination
Reactivity
Issue Date: 2009
Publisher: SPRINGER/PLENUM PUBLISHERS
Citation: JOURNAL OF CLUSTER SCIENCE, 20(2), 399-415
Abstract: Photochemical reaction of methanol solution containing 1,4-diferrocenyl- or 1,4-diphenyl-1,3-butadiynes and iron pentacarbonyl into which CO was constantly bubbled, yielded diiron hexacarbonyl complexes of cumulene ligand systems, [eta(1):eta(3)-{RCHC(2)CR(COOMe)}Fe(2)(CO)(6)] (1; E, R = Fc, 2; Z, R = Fc, 5; E, R = Ph, 6; Z, R = Ph) and [eta(3):eta(3)-{RCHC(2)CR(COOMe)}Fe(2)(CO)(6)] (3; E, R = Fc, 7; E, R = Ph), formed by 1,4-addition of -COOMe and -H to the butadiynes. Additionally, diferrole, [Fe(CO)(4){C(O)CC(Fc)C(O)}(2)], 4 was obtained in minor quantity. Compounds 1, 2, 5 and 6 contain vinylallyl carbon framework which is stabilized by MeOC=O -> Fe bond along with eta(1):eta(3) coordinated Fe(2)(CO)(6) unit. Compounds 3 and 7 contain butatriene units which are stabilized by eta(3):eta(3) coordinated Fe(2)(CO)(6) unit. Characterization of the new compounds was carried out by IR and (1)H and (13)C NMR spectroscopy and by mass spectrometry. Molecular structures of 2-7 were established by single crystal X-ray diffraction methods.
URI: http://dx.doi.org/10.1007/s10876-009-0247-4
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12350
http://hdl.handle.net/10054/12350
ISSN: 1040-7278
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