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Article: Reversible proton-coupled ReVII-ReVI and ReVI-ReV couples and crystal structure of [(RevO2(OH2)(Me3tacn)]BPh4 (Me3tacn=1,4,7-trimethyl-1,4,7-triazacyclononane)

TitleReversible proton-coupled ReVII-ReVI and ReVI-ReV couples and crystal structure of [(RevO2(OH2)(Me3tacn)]BPh4 (Me3tacn=1,4,7-trimethyl-1,4,7-triazacyclononane)
Authors
Issue Date1997
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/dalton
Citation
Journal of the Chemical Society Dalton Transactions, 1997, p. 2347-2350 How to Cite?
AbstractThe electrochemistry of [ReVIIO3(Me3tacn)]PF6 (Me3tacn = 1,4,7-trimethyl-1,4,7-triazacyclononane) in aqueous solution has been studied. At pH 1 it shows two quasi-reversible couples I at 20.14 and II at 20.36 V vs. saturated calomel electrode. Constant-potential coulometry at 20.50 V shows that the total number of electrons transferred for these two couples is two. The Pourbaix diagram over the range pH 0.9–12.2 shows that E2¯ 1 of couple I shifts cathodically by 60 mV per pH unit. For couple II there are two straight-line segments with slopes of 2118 mV (0.9 < pH < 4.1) and 260 mV (pH > 4.1) per pH unit. The complex [ReVO2(OH2)(Me3tacn)]BPh4 was prepared and structurally characterized by X-ray crystal analysis: monoclinic, space group P21/n (no. 14), a = 10.387(9), b = 21.176(4), c = 15.452(2) Å, b = 91.38(63)8, Z = 4. The Re]OH2 distance is 2.10(2) Å and the Re]] O distances are 1.78(1) and 1.82(1) Å. The two oxo groups are cis to each other with an angle of 106.7(5)8.
Persistent Identifierhttp://hdl.handle.net/10722/68923
ISSN
2002 Impact Factor: 3.023
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChe, CMen_HK
dc.contributor.authorCheng, JYKen_HK
dc.contributor.authorCheung, KKen_HK
dc.contributor.authorWong, KYen_HK
dc.date.accessioned2010-09-06T06:08:56Z-
dc.date.available2010-09-06T06:08:56Z-
dc.date.issued1997en_HK
dc.identifier.citationJournal of the Chemical Society Dalton Transactions, 1997, p. 2347-2350en_HK
dc.identifier.issn1472-7773en_HK
dc.identifier.urihttp://hdl.handle.net/10722/68923-
dc.description.abstractThe electrochemistry of [ReVIIO3(Me3tacn)]PF6 (Me3tacn = 1,4,7-trimethyl-1,4,7-triazacyclononane) in aqueous solution has been studied. At pH 1 it shows two quasi-reversible couples I at 20.14 and II at 20.36 V vs. saturated calomel electrode. Constant-potential coulometry at 20.50 V shows that the total number of electrons transferred for these two couples is two. The Pourbaix diagram over the range pH 0.9–12.2 shows that E2¯ 1 of couple I shifts cathodically by 60 mV per pH unit. For couple II there are two straight-line segments with slopes of 2118 mV (0.9 < pH < 4.1) and 260 mV (pH > 4.1) per pH unit. The complex [ReVO2(OH2)(Me3tacn)]BPh4 was prepared and structurally characterized by X-ray crystal analysis: monoclinic, space group P21/n (no. 14), a = 10.387(9), b = 21.176(4), c = 15.452(2) Å, b = 91.38(63)8, Z = 4. The Re]OH2 distance is 2.10(2) Å and the Re]] O distances are 1.78(1) and 1.82(1) Å. The two oxo groups are cis to each other with an angle of 106.7(5)8.-
dc.languageengen_HK
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/daltonen_HK
dc.relation.ispartofJournal of the Chemical Society Dalton Transactionsen_HK
dc.titleReversible proton-coupled ReVII-ReVI and ReVI-ReV couples and crystal structure of [(RevO2(OH2)(Me3tacn)]BPh4 (Me3tacn=1,4,7-trimethyl-1,4,7-triazacyclononane)en_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1472-7773&volume=&spage=2347&epage=2350&date=1997&atitle=Reversible+proton-coupled+ReVII-ReVI+and+ReVI-ReV+couples+and+crystal+structure+of+[(RevO2(OH2)(Me3tacn)]BPh4+(Me3tacn=1,4,7-trimethyl-1,4,7-triazacyclononane)en_HK
dc.identifier.emailChe, CM: cmche@hku.hken_HK
dc.identifier.emailCheung, KK: kkcheung@hkucc.hku.hken_HK
dc.identifier.authorityChe, CM=rp00670en_HK
dc.identifier.doi10.1039/A701300K-
dc.identifier.hkuros27173en_HK
dc.identifier.isiWOS:A1997XL43000021-

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