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Article: Novel boxlike dinuclear or chain polymeric silver(I) complexes with polypyridyl bridging ligands: Syntheses, crystal structures, and spectroscopic and electrochemical properties

TitleNovel boxlike dinuclear or chain polymeric silver(I) complexes with polypyridyl bridging ligands: Syntheses, crystal structures, and spectroscopic and electrochemical properties
Authors
Issue Date2001
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/ic
Citation
Inorganic Chemistry, 2001, v. 40 n. 17, p. 4143-4149 How to Cite?
AbstractThe syntheses, characterization, crystal structures, and photophysical and electrochemical properties of two dinuclear and two polymeric Ag 1 complexes with three polypyridyl ligands, 2,3-di-2-pyridylquinoxaline (L 1), 2,3-di-2-pyridyl-5,8-dimethoxyquinoxaline (L 2) , and 2,3,7,8-tetrakis(2-pyridyl)pyrazino[2,3-g] quinoxaline (L 3), are described. The structures of the two boxlike dinuclear complexes with L 1 and L 2 and two chemically the same but differently crystallized one-dimensional zigzag chain coordination polymers also consisting of boxlike dinuclear subunits have been elucidated by X-ray analysis. [AgL 1(CH 3CN)] 2- (BF 4) 2·2CHCl 3 (1): monoclinic, C2/c; a = 28.631(2), b = 12.2259(11), c = 14.3058(12) Å; β = 99.180(2)°; Z = 4. [AgL 2(CH 3CN) 2] 2 (ClO 4) 2 (2): triclinic, P1̄; a = 12.3398(2), b = 13.750(2), c = 14.326(7) Å α = 83.494(3), β = 74.631(3), γ = 76.422(3)°; Z = 4. {[Ag 2L 3(NO 3) 2] ·CH 3CN} ∞ (3a): monoclinic, P2 1/c; a = 9.5836(8), b = 13.4691(12), c = 14.0423(12) Å; β = 107.753(2)°; Z = 4. [Ag 2L 3(NO 3) 2] ∞ (3b): monoclinic, P2 1/c; a = 8.4689(6), b = 16.0447(12), c = 11.7307(8) Å; β = 102.051(1)°; Z = 2. The structures of the dinuclear complexes 1 and 2 are similar to each other, with the two intramolecular Ag 1 centers of each complex being spanned by two ligands thus forming a unique boxlike cyclic dimer. In 1, each Ag 1 center is four-coordinated by three nitrogen atoms of two L 1 ligands and a CH 3CN nitrogen donor, taking a distorted tetrahedral coordination geometry. The coordination environment of Ag 1 in 2 is similar to that in 1, except the formation of an additional weak coordination bond with the oxygen atom of the methoxy group of L 2. The structures of 3a,b are very similar to each other, except for the stacking patterns in the crystal lattices, and the cyclic boxlike dinuclear unit, which is similar to the structure of 1, constitutes the fundamental building block to form the one-dimensional zigzag chain structures due to the "end-on" nature of L 3. 1-3 exhibit metal-perturbed intraligand transitions in solution in 360-390 nm regions. Cyclic voltammetric studies of these complexes show the presence of reduction peak at ∼-0.5 V vs Fc +/0. In the solid state at 77 K, they exhibit broad emission that may be assignable to originate from the metal-perturbed intraligand transitions.
Persistent Identifierhttp://hdl.handle.net/10722/69491
ISSN
2015 Impact Factor: 4.82
2015 SCImago Journal Rankings: 1.873
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorBu, XHen_HK
dc.contributor.authorLiu, Hen_HK
dc.contributor.authorDu, Men_HK
dc.contributor.authorWong, KMCen_HK
dc.contributor.authorYam, VWWen_HK
dc.contributor.authorShionoya, Men_HK
dc.date.accessioned2010-09-06T06:14:09Z-
dc.date.available2010-09-06T06:14:09Z-
dc.date.issued2001en_HK
dc.identifier.citationInorganic Chemistry, 2001, v. 40 n. 17, p. 4143-4149en_HK
dc.identifier.issn0020-1669en_HK
dc.identifier.urihttp://hdl.handle.net/10722/69491-
dc.description.abstractThe syntheses, characterization, crystal structures, and photophysical and electrochemical properties of two dinuclear and two polymeric Ag 1 complexes with three polypyridyl ligands, 2,3-di-2-pyridylquinoxaline (L 1), 2,3-di-2-pyridyl-5,8-dimethoxyquinoxaline (L 2) , and 2,3,7,8-tetrakis(2-pyridyl)pyrazino[2,3-g] quinoxaline (L 3), are described. The structures of the two boxlike dinuclear complexes with L 1 and L 2 and two chemically the same but differently crystallized one-dimensional zigzag chain coordination polymers also consisting of boxlike dinuclear subunits have been elucidated by X-ray analysis. [AgL 1(CH 3CN)] 2- (BF 4) 2·2CHCl 3 (1): monoclinic, C2/c; a = 28.631(2), b = 12.2259(11), c = 14.3058(12) Å; β = 99.180(2)°; Z = 4. [AgL 2(CH 3CN) 2] 2 (ClO 4) 2 (2): triclinic, P1̄; a = 12.3398(2), b = 13.750(2), c = 14.326(7) Å α = 83.494(3), β = 74.631(3), γ = 76.422(3)°; Z = 4. {[Ag 2L 3(NO 3) 2] ·CH 3CN} ∞ (3a): monoclinic, P2 1/c; a = 9.5836(8), b = 13.4691(12), c = 14.0423(12) Å; β = 107.753(2)°; Z = 4. [Ag 2L 3(NO 3) 2] ∞ (3b): monoclinic, P2 1/c; a = 8.4689(6), b = 16.0447(12), c = 11.7307(8) Å; β = 102.051(1)°; Z = 2. The structures of the dinuclear complexes 1 and 2 are similar to each other, with the two intramolecular Ag 1 centers of each complex being spanned by two ligands thus forming a unique boxlike cyclic dimer. In 1, each Ag 1 center is four-coordinated by three nitrogen atoms of two L 1 ligands and a CH 3CN nitrogen donor, taking a distorted tetrahedral coordination geometry. The coordination environment of Ag 1 in 2 is similar to that in 1, except the formation of an additional weak coordination bond with the oxygen atom of the methoxy group of L 2. The structures of 3a,b are very similar to each other, except for the stacking patterns in the crystal lattices, and the cyclic boxlike dinuclear unit, which is similar to the structure of 1, constitutes the fundamental building block to form the one-dimensional zigzag chain structures due to the "end-on" nature of L 3. 1-3 exhibit metal-perturbed intraligand transitions in solution in 360-390 nm regions. Cyclic voltammetric studies of these complexes show the presence of reduction peak at ∼-0.5 V vs Fc +/0. In the solid state at 77 K, they exhibit broad emission that may be assignable to originate from the metal-perturbed intraligand transitions.en_HK
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.titleNovel boxlike dinuclear or chain polymeric silver(I) complexes with polypyridyl bridging ligands: Syntheses, crystal structures, and spectroscopic and electrochemical propertiesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0020-1669&volume=40&spage=4143&epage=4149&date=2001&atitle=Novel+boxlike+dinuclear+or+chain+polymeric+silver(I)+complexes+with+polypyridyl+bridging+ligands:++syntheses,+crystal+structures,+and+spectroscopic+and+electrochemical+propertiesen_HK
dc.identifier.emailWong, KMC:wongmc@hku.hken_HK
dc.identifier.emailYam, VWW:wwyam@hku.hken_HK
dc.identifier.authorityWong, KMC=rp00809en_HK
dc.identifier.authorityYam, VWW=rp00822en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/ic010044oen_HK
dc.identifier.pmid11487316-
dc.identifier.scopuseid_2-s2.0-0035854913en_HK
dc.identifier.hkuros69069en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035854913&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume40en_HK
dc.identifier.issue17en_HK
dc.identifier.spage4143en_HK
dc.identifier.epage4149en_HK
dc.identifier.isiWOS:000170381600007-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridBu, XH=7103052967en_HK
dc.identifier.scopusauthoridLiu, H=15132124400en_HK
dc.identifier.scopusauthoridDu, M=7201997484en_HK
dc.identifier.scopusauthoridWong, KMC=8061067200en_HK
dc.identifier.scopusauthoridYam, VWW=18539304700en_HK
dc.identifier.scopusauthoridShionoya, M=7005609541en_HK

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