File Download
There are no files associated with this item.
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1016/j.jorganchem.2006.02.029
- Scopus: eid_2-s2.0-33748893771
- WOS: WOS:000241308600023
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: Electronic communication between tungsten alkylidyne and metal isocyanide complex fragments across phenyleneethynylene bridges
Title | Electronic communication between tungsten alkylidyne and metal isocyanide complex fragments across phenyleneethynylene bridges |
---|---|
Authors | |
Keywords | Electron transfer Metal isocyanide complex Photoluminescence Tungsten alkylidyne complex |
Issue Date | 2006 |
Publisher | Elsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jorganchem |
Citation | Journal Of Organometallic Chemistry, 2006, v. 691 n. 21, p. 4514-4531 How to Cite? |
Abstract | Heteronuclear metal complexes of the type [X(CO)2(LL)W{triple bond, long}C(-C6H4-C{triple bond, long}C)p-C6H4-N{triple bond, long}C-]nMLm (X = Cl, Br; LL = tmeda, dppe; p = 0-3; n = 1 for Cr(CO)5, n = 2 for ReX(CO)3, PdCl2, PdI2, and PtI2) have been prepared. The molecular structure of one example, [Cl(CO)2(tmeda)W{triple bond, long}C-C6H4-N{triple bond, long}C-]2PdI2, was determined by X-ray crystallography. The extent of electronic communication between the tungsten alkylidyne and the metal isocyanide centers was probed by various spectroscopic techniques. In the parent systems (p = 0), the electronic changes due to modification of the isocyanide metal complex fragments could be distinguished clearly by the 13C NMR chemical shift of the alkylidyne carbon atom and the d → π* and π → π* electronic transitions of the metal alkylidyne system. However, only residual effects could be discerned for the longer systems using these spectroscopic probes. Probes based on the emission property of the tungsten alkylidyne fragment proved to be the most useful in distinguishing long-range effects in those cases where the isocyanide metal complex fragment is capable of quenching the emission. This is the case for MLm = PdCl2 and PdI2. Partial quenching effects were still observed at the longest investigated distance between the metal centers of about 3.1 nm. The available evidence suggests that the quenching mechanism is electron transfer. © 2006 Elsevier B.V. All rights reserved. |
Persistent Identifier | http://hdl.handle.net/10722/70065 |
ISSN | 2023 Impact Factor: 2.1 2023 SCImago Journal Rankings: 0.359 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yu, MPY | en_HK |
dc.contributor.author | Yam, VWW | en_HK |
dc.contributor.author | Cheung, KK | en_HK |
dc.contributor.author | Mayr, A | en_HK |
dc.date.accessioned | 2010-09-06T06:19:23Z | - |
dc.date.available | 2010-09-06T06:19:23Z | - |
dc.date.issued | 2006 | en_HK |
dc.identifier.citation | Journal Of Organometallic Chemistry, 2006, v. 691 n. 21, p. 4514-4531 | en_HK |
dc.identifier.issn | 0022-328X | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/70065 | - |
dc.description.abstract | Heteronuclear metal complexes of the type [X(CO)2(LL)W{triple bond, long}C(-C6H4-C{triple bond, long}C)p-C6H4-N{triple bond, long}C-]nMLm (X = Cl, Br; LL = tmeda, dppe; p = 0-3; n = 1 for Cr(CO)5, n = 2 for ReX(CO)3, PdCl2, PdI2, and PtI2) have been prepared. The molecular structure of one example, [Cl(CO)2(tmeda)W{triple bond, long}C-C6H4-N{triple bond, long}C-]2PdI2, was determined by X-ray crystallography. The extent of electronic communication between the tungsten alkylidyne and the metal isocyanide centers was probed by various spectroscopic techniques. In the parent systems (p = 0), the electronic changes due to modification of the isocyanide metal complex fragments could be distinguished clearly by the 13C NMR chemical shift of the alkylidyne carbon atom and the d → π* and π → π* electronic transitions of the metal alkylidyne system. However, only residual effects could be discerned for the longer systems using these spectroscopic probes. Probes based on the emission property of the tungsten alkylidyne fragment proved to be the most useful in distinguishing long-range effects in those cases where the isocyanide metal complex fragment is capable of quenching the emission. This is the case for MLm = PdCl2 and PdI2. Partial quenching effects were still observed at the longest investigated distance between the metal centers of about 3.1 nm. The available evidence suggests that the quenching mechanism is electron transfer. © 2006 Elsevier B.V. All rights reserved. | en_HK |
dc.language | eng | en_HK |
dc.publisher | Elsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jorganchem | en_HK |
dc.relation.ispartof | Journal of Organometallic Chemistry | en_HK |
dc.subject | Electron transfer | en_HK |
dc.subject | Metal isocyanide complex | en_HK |
dc.subject | Photoluminescence | en_HK |
dc.subject | Tungsten alkylidyne complex | en_HK |
dc.title | Electronic communication between tungsten alkylidyne and metal isocyanide complex fragments across phenyleneethynylene bridges | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-328X&volume=691&spage=4514&epage=4531&date=2006&atitle=Electronic+Communication+Between+Tungsten+Alkylidyne+And+Metal+Isocyanide+Complex+Fragments+Across+Phenyleneethynylene+Bridges+ | en_HK |
dc.identifier.email | Yam, VWW:wwyam@hku.hk | en_HK |
dc.identifier.authority | Yam, VWW=rp00822 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.jorganchem.2006.02.029 | en_HK |
dc.identifier.scopus | eid_2-s2.0-33748893771 | en_HK |
dc.identifier.hkuros | 152922 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-33748893771&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 691 | en_HK |
dc.identifier.issue | 21 | en_HK |
dc.identifier.spage | 4514 | en_HK |
dc.identifier.epage | 4531 | en_HK |
dc.identifier.isi | WOS:000241308600023 | - |
dc.publisher.place | Switzerland | en_HK |
dc.identifier.scopusauthorid | Yu, MPY=36800576900 | en_HK |
dc.identifier.scopusauthorid | Yam, VWW=18539304700 | en_HK |
dc.identifier.scopusauthorid | Cheung, KK=7402406613 | en_HK |
dc.identifier.scopusauthorid | Mayr, A=7102753384 | en_HK |
dc.identifier.issnl | 0022-328X | - |