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Mono and dinuclear group 12 phosphonates derived from a sterically encumbered phosphonic acid: Observation of esterification

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Title Mono and dinuclear group 12 phosphonates derived from a sterically encumbered phosphonic acid: Observation of esterification
 
Creator HOWLADER, R
WALAWALKAR, MG
MURUGAVEL, R
 
Subject Organic-inorganic hybrids
Metal phosphonates
Lamellar
Sterically hindered
Liphophilic phosphonic acids
RAY-POWDER STRUCTURES
TERT-BUTYL PHOSPHATE
METAL-PHOSPHONATE
STRUCTURAL DIVERSITY
CADMIUM PHOSPHONATE
CRYSTAL-STRUCTURES
OPEN-FRAMEWORK
LAYERED ZINC
LIGANDS
COMPLEXES
 
Description Metal phosphonates [Zn-2(dtbhp)(2)(TMEDA)(2)(H2O)(2)]center dot 0.5CH(3)CN (1), Cd-2(dtbhp)(2)(TMEDA)(2)(H2O)(2)]center dot 0.5CH(3)CN (2), [Cd-2(mdtbhp)(2)(1,10-phenanthroline)(4)]center dot(ClO4)(2)(CH3OH)(2) (3), and [Cd(dtbhp-H)(2)(2,2'-bpy)(2)](dtbhp-H-2) (4) have been synthesized at room temperature from a reaction between a suitable metal precursor, 3,5-di-tert-butyl-2-hydroxybenzylphosphonic acid (dtbhp-H-2) and an ancillary ligand, tetramethylenethylene diamine (TMEDA), 1,10-phenanthroline and 2,2'-bipyridine; Single crystal X-ray structure determination reveals that compound 1 crystallizes in the orthorhombic Fdd2 space group, while compounds 3 and 4 crystallize in the triclinic P (1) over bar space group. A rare P-O-H bond esterification is observed in compound 3, presumably catalyzed by perchloric acid formed in the reaction. Compounds 1-3 are discrete dinuclear complexes while monomeric complex 4 forms a ID polymeric chain through extended intermolecular hydrogen bonding, aided by free P-OH and P=O groups of the coordinated as well as the lattice phosphonic acid. (C) 2013 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE SA
 
Date 2014-10-16T12:57:39Z
2014-10-16T12:57:39Z
2013
 
Type Article
 
Identifier INORGANICA CHIMICA ACTA, 405147-154
http://dx.doi.org/10.1016/j.ica.2013.05.011
http://dspace.library.iitb.ac.in/jspui/handle/100/15605
 
Language en