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Article: Synthesis, characterization, and acidity of ruthenium dihydrogen complexes with 1,4,7-triazacyclononane, 1,4,7-trimethyl-1,4,7-triazacyclononane, and hydrotris (pyrazolyl)borato ligands
Title | Synthesis, characterization, and acidity of ruthenium dihydrogen complexes with 1,4,7-triazacyclononane, 1,4,7-trimethyl-1,4,7-triazacyclononane, and hydrotris (pyrazolyl)borato ligands |
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Authors | |
Issue Date | 1998 |
Publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/organometallics |
Citation | Organometallics, 1998, v. 17 n. 10, p. 2052-2059 How to Cite? |
Abstract | Protonation of [ RCnRuH(L)(L′)] + ( RCn = 1,4,7-triazacyclononane and 1,4,7-trimethyl-1,4,7-triazacyclononane; L,L′ = (PPh 3) 2, dppe, and CO,PPh 3) produced the corresponding dicationic dihydrogen complexes [ RCnRu(H 2)(L)(L′)] 2+. Protonation of TpRuH(dppe) (Tp = hydrotris-(pyrazolyl)borato) yielded the new monocationic dihydrogen complex [TpRu(H 2)(dppe)] +. The acidity of the dihydrogen complexes [ RCnRu(H 2)(L)(L′)] 2+ and monocationic dihydrogen complexes [TpRu(H 2)(L)(L′)] + (L,L′ = dppe, (PPh 3) 2, CH 3CN,PPh 3, and CO,PPh 3) has been studied. It was found that the dicationic complexes are more acidic than their monocationic Tp and Cp counterparts. [ MeCnRu(H 2)(CO)(PPh 3)] 2+ was found to be more acidic than [ HCnRu(H 2)(CO)(PPh 3)] 2+, probably due to the stronger H-H interaction in the latter complex. It is also noted that triazacyclononane and hydrotris(pyrazolyl)borato dihydrogen complexes with pseudo aqueous pK a values well above that of H 3O + can be deprotonated by H 2O to form the corresponding monohydride complexes in organic/aqueous mixed solvents. It is believed that deprotonation of the dihydrogen ligands in these complexes is assisted by strong solvation of H + by H 2O. |
Persistent Identifier | http://hdl.handle.net/10722/68987 |
ISSN | 2023 Impact Factor: 2.5 2023 SCImago Journal Rankings: 0.654 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Ng, SM | en_HK |
dc.contributor.author | Fang, YQ | en_HK |
dc.contributor.author | Lau, CP | en_HK |
dc.contributor.author | Wong, WT | en_HK |
dc.contributor.author | Jia, G | en_HK |
dc.date.accessioned | 2010-09-06T06:09:31Z | - |
dc.date.available | 2010-09-06T06:09:31Z | - |
dc.date.issued | 1998 | en_HK |
dc.identifier.citation | Organometallics, 1998, v. 17 n. 10, p. 2052-2059 | en_HK |
dc.identifier.issn | 0276-7333 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/68987 | - |
dc.description.abstract | Protonation of [ RCnRuH(L)(L′)] + ( RCn = 1,4,7-triazacyclononane and 1,4,7-trimethyl-1,4,7-triazacyclononane; L,L′ = (PPh 3) 2, dppe, and CO,PPh 3) produced the corresponding dicationic dihydrogen complexes [ RCnRu(H 2)(L)(L′)] 2+. Protonation of TpRuH(dppe) (Tp = hydrotris-(pyrazolyl)borato) yielded the new monocationic dihydrogen complex [TpRu(H 2)(dppe)] +. The acidity of the dihydrogen complexes [ RCnRu(H 2)(L)(L′)] 2+ and monocationic dihydrogen complexes [TpRu(H 2)(L)(L′)] + (L,L′ = dppe, (PPh 3) 2, CH 3CN,PPh 3, and CO,PPh 3) has been studied. It was found that the dicationic complexes are more acidic than their monocationic Tp and Cp counterparts. [ MeCnRu(H 2)(CO)(PPh 3)] 2+ was found to be more acidic than [ HCnRu(H 2)(CO)(PPh 3)] 2+, probably due to the stronger H-H interaction in the latter complex. It is also noted that triazacyclononane and hydrotris(pyrazolyl)borato dihydrogen complexes with pseudo aqueous pK a values well above that of H 3O + can be deprotonated by H 2O to form the corresponding monohydride complexes in organic/aqueous mixed solvents. It is believed that deprotonation of the dihydrogen ligands in these complexes is assisted by strong solvation of H + by H 2O. | en_HK |
dc.language | eng | en_HK |
dc.publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/organometallics | en_HK |
dc.relation.ispartof | Organometallics | en_HK |
dc.title | Synthesis, characterization, and acidity of ruthenium dihydrogen complexes with 1,4,7-triazacyclononane, 1,4,7-trimethyl-1,4,7-triazacyclononane, and hydrotris (pyrazolyl)borato ligands | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0276-7333&volume=17&spage=2052&epage=2059&date=1998&atitle=Synthesis,characterization,+and+acidity+of+ruthenium+dihydrogen+complexes+with+1,4,7-triazacyclononane,+1,4,7-trimethyl-1,4,7-triazacyclononane,+and+hydrotris(pyrazolyl)borato+ligands | en_HK |
dc.identifier.email | Wong, WT: wtwong@hku.hk | en_HK |
dc.identifier.authority | Wong, WT=rp00811 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1021/om9710374 | - |
dc.identifier.scopus | eid_2-s2.0-0000884479 | en_HK |
dc.identifier.hkuros | 32599 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0000884479&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 17 | en_HK |
dc.identifier.issue | 10 | en_HK |
dc.identifier.spage | 2052 | en_HK |
dc.identifier.epage | 2059 | en_HK |
dc.identifier.isi | WOS:000073789900025 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Ng, SM=37004088600 | en_HK |
dc.identifier.scopusauthorid | Fang, YQ=55469325100 | en_HK |
dc.identifier.scopusauthorid | Lau, CP=7401968356 | en_HK |
dc.identifier.scopusauthorid | Wong, WT=7403973084 | en_HK |
dc.identifier.scopusauthorid | Jia, G=7103360705 | en_HK |
dc.identifier.issnl | 0276-7333 | - |