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Article: New [LNiII2]+ Complex Incorporating 2-formyl or 2,6-diformyl-4-methyl Phenol as Inhibitors of the Hydrolysis of the Ligand L3-: Ni...Ni Ferromagnetic Coupling and S=2 Ground States

TitleNew [LNiII2]+ Complex Incorporating 2-formyl or 2,6-diformyl-4-methyl Phenol as Inhibitors of the Hydrolysis of the Ligand L3-: Ni...Ni Ferromagnetic Coupling and S=2 Ground States
Authors
Issue Date2007
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/ic
Citation
Inorganic Chemistry, 2007, v. 46 n. 14, p. 5727-5733 How to Cite?
AbstractReaction of the dinucleating ligand H3L (2-(2'-hydroxyphenyl)-1,3-bis[4-(2-hydroxyphenyl)-3-azabut-3-enyl]-1,3-imidazolid ine) with Ni(NO3)(2).6H2O produces the dimer of monomers [Ni(HL1)]2(NO3)(2).4H2O (1.4H2O) following the hydrolysis of H3L. If the reaction occurs in the presence of 2-formylphenol (Hfp) or 2,6-diformyl-4-methylphenol (Hdfp), this hydrolysis is prevented by incorporation of these co-ligands into the structure and stabilization of the new complexes [Ni2L(fp)(H2O)].3H2O (2.3H2O) and [Ni2L(dfp)].4.5H2O (3.4.5H2O), respectively. Complexes 2 and 3 may be considered to be structural models of the active site of urease, where coordination of the carbonyl ligand mimics binding of urea. In complex 2, coordination of terminal water reproduces the binding of this substrate of the enzyme to the active site. In both dinuclear complexes, the NiII ions are coupled ferromagnetically to yield S=2 ground states, whereas complex 1 exhibits weak intradimer antiferromagnetic exchange through hydrogen bonds. The magnetic data can be modeled by using the Van Vleck equation, incorporating intermolecular interactions, or by diagonalization of a spin Hamiltonian that includes single-ion anisotropy.
Persistent Identifierhttp://hdl.handle.net/10722/69920
ISSN
2015 Impact Factor: 4.82
2015 SCImago Journal Rankings: 1.873
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorPaital, ARen_HK
dc.contributor.authorWong, WTen_HK
dc.contributor.authorAromi, Gen_HK
dc.contributor.authorRay, Den_HK
dc.date.accessioned2010-09-06T06:18:02Z-
dc.date.available2010-09-06T06:18:02Z-
dc.date.issued2007en_HK
dc.identifier.citationInorganic Chemistry, 2007, v. 46 n. 14, p. 5727-5733en_HK
dc.identifier.issn0020-1669en_HK
dc.identifier.urihttp://hdl.handle.net/10722/69920-
dc.description.abstractReaction of the dinucleating ligand H3L (2-(2'-hydroxyphenyl)-1,3-bis[4-(2-hydroxyphenyl)-3-azabut-3-enyl]-1,3-imidazolid ine) with Ni(NO3)(2).6H2O produces the dimer of monomers [Ni(HL1)]2(NO3)(2).4H2O (1.4H2O) following the hydrolysis of H3L. If the reaction occurs in the presence of 2-formylphenol (Hfp) or 2,6-diformyl-4-methylphenol (Hdfp), this hydrolysis is prevented by incorporation of these co-ligands into the structure and stabilization of the new complexes [Ni2L(fp)(H2O)].3H2O (2.3H2O) and [Ni2L(dfp)].4.5H2O (3.4.5H2O), respectively. Complexes 2 and 3 may be considered to be structural models of the active site of urease, where coordination of the carbonyl ligand mimics binding of urea. In complex 2, coordination of terminal water reproduces the binding of this substrate of the enzyme to the active site. In both dinuclear complexes, the NiII ions are coupled ferromagnetically to yield S=2 ground states, whereas complex 1 exhibits weak intradimer antiferromagnetic exchange through hydrogen bonds. The magnetic data can be modeled by using the Van Vleck equation, incorporating intermolecular interactions, or by diagonalization of a spin Hamiltonian that includes single-ion anisotropy.-
dc.languageengen_HK
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/icen_HK
dc.relation.ispartofInorganic Chemistryen_HK
dc.subject.meshCresols - chemical synthesis - chemistry-
dc.subject.meshMagnetics-
dc.subject.meshNickel - chemistry-
dc.subject.meshOrganometallic Compounds - chemistry-
dc.subject.meshSulfur - chemistry-
dc.titleNew [LNiII2]+ Complex Incorporating 2-formyl or 2,6-diformyl-4-methyl Phenol as Inhibitors of the Hydrolysis of the Ligand L3-: Ni...Ni Ferromagnetic Coupling and S=2 Ground Statesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0020-1669&volume=46&spage=5727&epage=5733&date=2007&atitle=New+[LNiII2]++Complex+Incorporating+2-Formyl+or+2,6-Diformyl-4-methyl+Phenol+as+Inhibitors+of+the+Hydrolysis+of+the+Ligand+L3-:+Ni...Ni+Ferromagnetic+Coupling+and+S=2+Ground+Statesen_HK
dc.identifier.emailWong, WT: wtwong@hku.hken_HK
dc.identifier.authorityWong, WT=rp00811en_HK
dc.identifier.doi10.1021/ic700496c-
dc.identifier.pmid17569529-
dc.identifier.scopuseid_2-s2.0-34547188201-
dc.identifier.hkuros142043en_HK
dc.identifier.volume46-
dc.identifier.issue14-
dc.identifier.spage5727-
dc.identifier.epage5733-
dc.identifier.isiWOS:000247623000042-
dc.publisher.placeUnited States-

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