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Article: Synthesis, crystal structures and spectroscopic properties of cationic carbyne complexes of molybdenum and tungsten supported by tripodal nitrogen, phosphorus and sulphur donor ligands

TitleSynthesis, crystal structures and spectroscopic properties of cationic carbyne complexes of molybdenum and tungsten supported by tripodal nitrogen, phosphorus and sulphur donor ligands
Authors
KeywordsCarbyne complexes
Crystal structures
Molybdenum
Photoluminescence
Tripodal ligands
Tungsten
Issue Date1998
PublisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jorganchem
Citation
Journal Of Organometallic Chemistry, 1998, v. 563 n. 1-2, p. 191-200 How to Cite?
AbstractReaction of the tridentate ligands HCpy3 or Ppy3 (py = 2-pyridyl) with Cl(CO)2py2M=CPh (M = Mo, W) in THF at elevated temperature followed by metathesis with NaBPh4 in CH3CN affords [(n3-Xpy3)(CO)2M=CPh]+ (M = W, X = P (2), HC (3); M = Mo, X = P (4)) in high yield. Interaction between 1,1,1-tris(diphenylphosphinomethyl)ethane (CH3C(CH2PPh2)3) or 1,4,7-trithiacyclononane (TTCN) and Cl(CO)2py2W≡CPh in the presence of AgPF6 in refluxing CH3CN gives [{CH3C(CH2PPh2)3}(CO) 2W=CPh]PF6 (5) and [(TTCN)(CO)2W≡CPh]PF6 (6), respectively. These complexes exhibit intense absorption bands at 320-340 nm and weak absorptions in the 400-500 nm region, while excitation at 330 nm in dichloromethane give intense orange to red emission. The structure of the product (1) from reaction of Ppy3 with Cl(CO)2py2W=CPh was established by X-ray crystallography and shows that only two of the pyridine rings in Ppy3 are bound to the metal center. The crystal structures of 2 · EtOH and 3 · EtOH show that the W-N distance trans to the carbyne moiety is significantly longer than those which are cis, and this is attributed to the strong trans influence of CPh compared to CO. © 1998 Elsevier Science S.A. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/70226
ISSN
2015 Impact Factor: 2.336
2015 SCImago Journal Rankings: 0.732
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLee, FWen_HK
dc.contributor.authorChan, MCWen_HK
dc.contributor.authorCheung, KKen_HK
dc.contributor.authorChe, CMen_HK
dc.date.accessioned2010-09-06T06:20:54Z-
dc.date.available2010-09-06T06:20:54Z-
dc.date.issued1998en_HK
dc.identifier.citationJournal Of Organometallic Chemistry, 1998, v. 563 n. 1-2, p. 191-200en_HK
dc.identifier.issn0022-328Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/70226-
dc.description.abstractReaction of the tridentate ligands HCpy3 or Ppy3 (py = 2-pyridyl) with Cl(CO)2py2M=CPh (M = Mo, W) in THF at elevated temperature followed by metathesis with NaBPh4 in CH3CN affords [(n3-Xpy3)(CO)2M=CPh]+ (M = W, X = P (2), HC (3); M = Mo, X = P (4)) in high yield. Interaction between 1,1,1-tris(diphenylphosphinomethyl)ethane (CH3C(CH2PPh2)3) or 1,4,7-trithiacyclononane (TTCN) and Cl(CO)2py2W≡CPh in the presence of AgPF6 in refluxing CH3CN gives [{CH3C(CH2PPh2)3}(CO) 2W=CPh]PF6 (5) and [(TTCN)(CO)2W≡CPh]PF6 (6), respectively. These complexes exhibit intense absorption bands at 320-340 nm and weak absorptions in the 400-500 nm region, while excitation at 330 nm in dichloromethane give intense orange to red emission. The structure of the product (1) from reaction of Ppy3 with Cl(CO)2py2W=CPh was established by X-ray crystallography and shows that only two of the pyridine rings in Ppy3 are bound to the metal center. The crystal structures of 2 · EtOH and 3 · EtOH show that the W-N distance trans to the carbyne moiety is significantly longer than those which are cis, and this is attributed to the strong trans influence of CPh compared to CO. © 1998 Elsevier Science S.A. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jorganchemen_HK
dc.relation.ispartofJournal of Organometallic Chemistryen_HK
dc.subjectCarbyne complexesen_HK
dc.subjectCrystal structuresen_HK
dc.subjectMolybdenumen_HK
dc.subjectPhotoluminescenceen_HK
dc.subjectTripodal ligandsen_HK
dc.subjectTungstenen_HK
dc.titleSynthesis, crystal structures and spectroscopic properties of cationic carbyne complexes of molybdenum and tungsten supported by tripodal nitrogen, phosphorus and sulphur donor ligandsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-328X&volume=563&spage=191&epage=200&date=1998&atitle=Synthesis,+crystal+structures+and+spectroscopic+properties+of+cationic+carbyne+complexes+of+molybdenum+and+tungsten+supported+by+tripodal+nitrogen,+phosphorus+and+sulphur+donor+ligandsen_HK
dc.identifier.emailChe, CM:cmche@hku.hken_HK
dc.identifier.authorityChe, CM=rp00670en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0022-328X(98)00564-6-
dc.identifier.scopuseid_2-s2.0-0000992068en_HK
dc.identifier.hkuros40247en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0000992068&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume563en_HK
dc.identifier.issue1-2en_HK
dc.identifier.spage191en_HK
dc.identifier.epage200en_HK
dc.identifier.isiWOS:000075121600022-
dc.publisher.placeSwitzerlanden_HK
dc.identifier.scopusauthoridLee, FW=7403111574en_HK
dc.identifier.scopusauthoridChan, MCW=7402598116en_HK
dc.identifier.scopusauthoridCheung, KK=7402406613en_HK
dc.identifier.scopusauthoridChe, CM=7102442791en_HK

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