File Download
 
Links for fulltext
(May Require Subscription)
 
Supplementary

Article: Luminescent nitridometal complexes. Photophysical and photochemical properties of the 3[(dxy)1(dπ*)1] excited state of nitridoosmium(VI) complexes with polypyridine ligands
  • Basic View
  • Metadata View
  • XML View
TitleLuminescent nitridometal complexes. Photophysical and photochemical properties of the 3[(dxy)1(dπ*)1] excited state of nitridoosmium(VI) complexes with polypyridine ligands
 
AuthorsChin, KF1
Cheung, KK1
Yip, HK1
Mak, TCW2
Che, CM1
 
Issue Date1995
 
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/dalton
 
CitationJournal Of The Chemical Society, Dalton Transactions, 1995 n. 4, p. 657-663 [How to Cite?]
DOI: http://dx.doi.org/10.1039/DT9950000657
 
AbstractNitridoosmium(VI) complexes of substituted 2,2′-bipyridines and 1,10-phenanthrolines have been prepared from [OsNCl4]- and the appropriate chelating ligands in acetonitrile. Reaction of [Os(bipy)NCl3](bipy = 2,2′-bipyridine) and [Os(terpy)NCl2]Cl (terpy = 2,2′:6′,2″-terpyridine) with neat trifluoromethanesulfonic acid gave [Os(bipy)NCl2(H2O)]+ and [Os(terpy)N(Cl)(CF3SO3)]+ respectively. The crystal structures of [Os(dmbipy)NCl3](dmbipy = 5,5′-dimethyl-2,2′-bipyridine), [Os(bipy)NCl2(H2O)]+ and [Os(terpy)N(Cl)(CF3SO3)]+ show that the Os≡N distances are 1.68(1), 1.630(7) and 1.629(8) Å respectively. In the latter two complexes the Os≡N moiety is perpendicular to the plane of the chelating ligand. The spectroscopic, photophysical and photochemical properties of the newly prepared complexes have been studied. All have long-lived and emissive 3[dxy′,dπ.] excited states in the solid state and in fluid solution at room temperature. The complex mer-[Os(terpy)NCl2][ClO4] has the longest emission lifetime 4.64 μs (at infinite dilution) in degassed acetonitrile at room temperature. Based on quenching studies with aromatic hydrocarbons, this complex is a powerful photooxidant with E⊖[OsVI*-OsV] being 2.12(30)V vs. the normal hydrogen electrode.
 
ISSN1472-7773
 
DOIhttp://dx.doi.org/10.1039/DT9950000657
 
DC FieldValue
dc.contributor.authorChin, KF
 
dc.contributor.authorCheung, KK
 
dc.contributor.authorYip, HK
 
dc.contributor.authorMak, TCW
 
dc.contributor.authorChe, CM
 
dc.date.accessioned2012-10-08T03:16:44Z
 
dc.date.available2012-10-08T03:16:44Z
 
dc.date.issued1995
 
dc.description.abstractNitridoosmium(VI) complexes of substituted 2,2′-bipyridines and 1,10-phenanthrolines have been prepared from [OsNCl4]- and the appropriate chelating ligands in acetonitrile. Reaction of [Os(bipy)NCl3](bipy = 2,2′-bipyridine) and [Os(terpy)NCl2]Cl (terpy = 2,2′:6′,2″-terpyridine) with neat trifluoromethanesulfonic acid gave [Os(bipy)NCl2(H2O)]+ and [Os(terpy)N(Cl)(CF3SO3)]+ respectively. The crystal structures of [Os(dmbipy)NCl3](dmbipy = 5,5′-dimethyl-2,2′-bipyridine), [Os(bipy)NCl2(H2O)]+ and [Os(terpy)N(Cl)(CF3SO3)]+ show that the Os≡N distances are 1.68(1), 1.630(7) and 1.629(8) Å respectively. In the latter two complexes the Os≡N moiety is perpendicular to the plane of the chelating ligand. The spectroscopic, photophysical and photochemical properties of the newly prepared complexes have been studied. All have long-lived and emissive 3[dxy′,dπ.] excited states in the solid state and in fluid solution at room temperature. The complex mer-[Os(terpy)NCl2][ClO4] has the longest emission lifetime 4.64 μs (at infinite dilution) in degassed acetonitrile at room temperature. Based on quenching studies with aromatic hydrocarbons, this complex is a powerful photooxidant with E⊖[OsVI*-OsV] being 2.12(30)V vs. the normal hydrogen electrode.
 
dc.description.natureLink_to_subscribed_fulltext
 
dc.identifier.citationJournal Of The Chemical Society, Dalton Transactions, 1995 n. 4, p. 657-663 [How to Cite?]
DOI: http://dx.doi.org/10.1039/DT9950000657
 
dc.identifier.doihttp://dx.doi.org/10.1039/DT9950000657
 
dc.identifier.epage663
 
dc.identifier.hkuros1457
 
dc.identifier.issn1472-7773
 
dc.identifier.issue4
 
dc.identifier.scopuseid_2-s2.0-37049090714
 
dc.identifier.spage657
 
dc.identifier.urihttp://hdl.handle.net/10722/168256
 
dc.languageeng
 
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/dalton
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofJournal of the Chemical Society, Dalton Transactions
 
dc.titleLuminescent nitridometal complexes. Photophysical and photochemical properties of the 3[(dxy)1(dπ*)1] excited state of nitridoosmium(VI) complexes with polypyridine ligands
 
dc.typeArticle
 
<?xml encoding="utf-8" version="1.0"?>
<item><contributor.author>Chin, KF</contributor.author>
<contributor.author>Cheung, KK</contributor.author>
<contributor.author>Yip, HK</contributor.author>
<contributor.author>Mak, TCW</contributor.author>
<contributor.author>Che, CM</contributor.author>
<date.accessioned>2012-10-08T03:16:44Z</date.accessioned>
<date.available>2012-10-08T03:16:44Z</date.available>
<date.issued>1995</date.issued>
<identifier.citation>Journal Of The Chemical Society, Dalton Transactions, 1995 n. 4, p. 657-663</identifier.citation>
<identifier.issn>1472-7773</identifier.issn>
<identifier.uri>http://hdl.handle.net/10722/168256</identifier.uri>
<description.abstract>Nitridoosmium(VI) complexes of substituted 2,2&#8242;-bipyridines and 1,10-phenanthrolines have been prepared from [OsNCl4]- and the appropriate chelating ligands in acetonitrile. Reaction of [Os(bipy)NCl3](bipy = 2,2&#8242;-bipyridine) and [Os(terpy)NCl2]Cl (terpy = 2,2&#8242;:6&#8242;,2&#8243;-terpyridine) with neat trifluoromethanesulfonic acid gave [Os(bipy)NCl2(H2O)]+ and [Os(terpy)N(Cl)(CF3SO3)]+ respectively. The crystal structures of [Os(dmbipy)NCl3](dmbipy = 5,5&#8242;-dimethyl-2,2&#8242;-bipyridine), [Os(bipy)NCl2(H2O)]+ and [Os(terpy)N(Cl)(CF3SO3)]+ show that the Os&#8801;N distances are 1.68(1), 1.630(7) and 1.629(8) &#197; respectively. In the latter two complexes the Os&#8801;N moiety is perpendicular to the plane of the chelating ligand. The spectroscopic, photophysical and photochemical properties of the newly prepared complexes have been studied. All have long-lived and emissive 3[dxy&#8242;,d&#960;.] excited states in the solid state and in fluid solution at room temperature. The complex mer-[Os(terpy)NCl2][ClO4] has the longest emission lifetime 4.64 &#956;s (at infinite dilution) in degassed acetonitrile at room temperature. Based on quenching studies with aromatic hydrocarbons, this complex is a powerful photooxidant with E&#8854;[OsVI*-OsV] being 2.12(30)V vs. the normal hydrogen electrode.</description.abstract>
<language>eng</language>
<publisher>Royal Society of Chemistry. The Journal&apos;s web site is located at http://www.rsc.org/dalton</publisher>
<relation.ispartof>Journal of the Chemical Society, Dalton Transactions</relation.ispartof>
<title>Luminescent nitridometal complexes. Photophysical and photochemical properties of the 3[(dxy)1(d&#960;*)1] excited state of nitridoosmium(VI) complexes with polypyridine ligands</title>
<type>Article</type>
<description.nature>Link_to_subscribed_fulltext</description.nature>
<identifier.doi>10.1039/DT9950000657</identifier.doi>
<identifier.scopus>eid_2-s2.0-37049090714</identifier.scopus>
<identifier.hkuros>1457</identifier.hkuros>
<identifier.issue>4</identifier.issue>
<identifier.spage>657</identifier.spage>
<identifier.epage>663</identifier.epage>
<publisher.place>United Kingdom</publisher.place>
</item>
Author Affiliations
  1. The University of Hong Kong
  2. Chinese University of Hong Kong