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Photolytic reaction of substituted (ethynyl)benzaldehyde and Fe(CO)(5): Formation of indenone and chelated iron complexes

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Title Photolytic reaction of substituted (ethynyl)benzaldehyde and Fe(CO)(5): Formation of indenone and chelated iron complexes
 
Creator MATHUR, P
JHA, B
RAGHUVANSHI, A
JOSHI, RK
MOBIN, SM
 
Subject Iron pentacarbonyl
Photolysis
Ferracyclopentadiene
Indenone
Demetallation
ORGANOMETALLIC COMPLEXES
PHOTOCHEMICAL-REACTIONS
FORMALDEHYDE COMPLEXES
RUTHENIUM COMPLEXES
MOLECULAR-STRUCTURE
EFFICIENT SYNTHESIS
CARBONYL COMPLEXES
DONOR LIGANDS
DERIVATIVES
RING
 
Description At 0 degrees C, photolysis of a hexane solution containing Fe(CO)(5) and 2-(phenylethynyl)benzaldehyde (1) affords a mixture of mononuclear (tricarbonyliron-2-phenylindenone, (2) and binuclear acetylene coupled iron carbonyl complexes [Fe(CO)(3){eta(4)-2,4-(C6H4CHO)(2)-3,5-(C6H5)(2)C-4}Fe(CO)(3)], 3, [Fe(CO)(3){eta(4)-2-(eta(1)-C6H4CHO)-4-(C6H4CHO)-3,5-(C6H5)(2)C-4}Fe(CO)(2)], 4 and [Fe(CO)(3){eta(4)-4-(eta(1)-2-C6H4CHO)-2-(C6H4CHO)-3,5-(C6H5)(2) C-4}Fe(CO)(2)], 5. In compounds 4 and 5, the exocyclic iron atom is eta(4)-bonded with the ferracyclopentadiene unit, and it bears two terminal carbonyls. Its 18 electron count is completed by virtue of the aldehydic oxygen atom coordinating to the iron atom. Photolysis of 2-(ferrocenylethynyl)benzaldehyde (6) under similar condition leads to the formation of tricarbonyliron-2-ferrocenylindenone (7) and tetracarbonyl( 2-ferrocenyl-3-(2-formylphenyl)maleoyl)iron (8) predominantly. (C) 2012 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE SA
 
Date 2014-10-15T15:58:59Z
2014-10-15T15:58:59Z
2012
 
Type Article
 
Identifier JOURNAL OF ORGANOMETALLIC CHEMISTRY, 7127-14
http://dx.doi.org/10.1016/j.jorganchem.2012.02.032
http://dspace.library.iitb.ac.in/jspui/handle/100/15214
 
Language en