Zobrazeno 1 - 10 of 14 pro vyhledávání: '"Berit Bartik"'
1
Toward Metal-Capped One-Dimensional Carbon Allotropes: Wirelike C6−C20 Polyynediyl Chains That Span Two Redox-Active (η5-C5Me5)Re(NO)(PPh3) Endgroups
Autor: Roman Dembinski, Tamás Bartik, Berit Bartik, Monika Jaeger, J. A. Gladysz
Publikováno v: Journal of the American Chemical Society. 122:810-822
Reaction of the butadiynyl complex (η5-C5Me5)Re(NO)(PPh3)(C⋮CC⋮CH) (ReC4H) with Cu(OAc)2 (pyridine, 80 °C) gives the μ-octatetraynediyl complex ReC8Re (70%). Analogous cross-coupling of ReC4H and ReC2H gives (after chromatography) ReC4Re (14%)
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c04845d752f0f544ff1d1f9380676c42
https://doi.org/10.1021/ja992747z
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3
Synthesis, Structure, and Redox Chemistry of Heteropolymetallic Carbon Complexes with MC2M', MC4M', and MC4M'C4M Linkages. Transmetalations of Lithiocarbon Complexes (.eta.5-C5Me5)Re(NO)(PPh3)(C.tplbond.CLi) and (.eta.5-C5Me5)Re(NO)(PPh3)(C.tplbond.CC.tplbond.CLi)
Autor: John A. Gladysz, Berit Bartik, Atta M. Arif, Monika Brady, Tamás Bartik, Weiqing Weng, James A. Ramsden
Publikováno v: Journal of the American Chemical Society. 117:11922-11931
One major objective has been the preparation of compounds in which sp carbon chains span two metals, L{sub n}M(C){sub x}M`L`{sub n`} (I). There are now many examples of such C{sub 2} complexes. However, higher homologs remain much less well explored.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::69d17f7b22d94966a8117bde72831986
https://doi.org/10.1021/ja00153a014
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4
Surface active phosphines for catalysis under two-phase reaction conditions. P(menthyl) [(CH2)8C6H4-p-SO3Na]2 and the hydroformylation of styrene
Autor: Brian E. Hanson, Tamas Bartik, Berit Bartik, Hao Ding
Publikováno v: Journal of Molecular Catalysis A: Chemical. 98:117-122
The novel optically active phosphine, bis(8-phenyloctyl) (Menth) phosphine, (Menth = 1R,3R,4S( - )menthyl) is synthesized and sulfonated under mild conditions to yield the corresponding sulfonated phosphine, disodium bis-(8-(para-sulfonatophenyl)octy
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4f4464729234d87fef1998ff80d74a88
https://doi.org/10.1016/1381-1169(95)00012-7
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5
Phosphorus-31 NMR spin lattice relaxation times as an indirect probe of adsorbed water in supported aqueous phase catalysts
Autor: Tamas Bartik, Barbara B. Bunn, William R. Bebout, Brian E. Hanson, Thomas E. Glass, Berit Bartik
Publikováno v: Journal of Molecular Catalysis. 94:157-161
Phosphorus-31 spin lattice relaxation times, T1's, for SAP hydroformylation catalysts derived from HRh (CO) (TPPTS)3 and TPPTS (TPPTS = trisulfonated triphenyl phosphine trisodium salt) are consistent with a liquid-like character for the supported aq
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fa47cd9bf43d1bf2d059d75a11f9ed63
https://doi.org/10.1016/s0304-5102(94)87037-3
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6
Synthesis and characterization of Na5[Co(CO)3(P{(CH2)nC6H4-P-SO3}3)2], n = 1, 2, 3, and 6. Novel zwitterion
Autor: Ipin Guo, Brian E. Hanson, Berit Bartik, Tamas Bartik
Publikováno v: Journal of Organometallic Chemistry. 480:15-21
The electron donating water soluble phosphines, P{(CH 2 ) n C 6 H 4 - p -SO 3 Na} 3 , n = 1, 2, 3 and 6, react rapidly with Co 2 (CO) 8 under two phase reaction conditions to yield the disproportionation products, [Co(CO) 3 (P{(CH 2 ) n C 6 H 4 - p -
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cde70c1a36b11170b9f09d57acfdf8b4
https://doi.org/10.1016/0022-328x(94)87097-7
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7
Aqueous phase rhodium hydroformylation of octene-1 with trisulfonated tris (ω-phenyl)alkylphosphines and trisulfonated triphenyl phosphine. Reaction selectivity as an indication of rhodium-phosphine complex chemistry
Autor: Tamas Bartikl, Brian E. Hanson, Berit Bartik
Publikováno v: Journal of Molecular Catalysis. 88:43-56
The electron donating, water soluble phosphines, P[ (CH 2 ) x C 6 H 4 - p -SO 3 3Na] 3 , x =1, 2, 3, 6, are used to generate aqueous rhodium catalysts for the hydroformylation of octene-1. At low L/ Rh ratios conversion generally increases with incre
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e7300a57c90e2602a0feeaad741b7568
https://doi.org/10.1016/0304-5102(93)e0258-i
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8
Synthesis, reactions, and catalytic chemistry of the water-soluble chelating phosphine 1,2-bis[bis(m-sodiosulfonatophenyl)phosphino]ethane (DPPETS). Complexes with nickel, palladium, platinum, and rhodium
Autor: Brian E. Hanson, Berit Bartik, Barbara B. Bunn, Tamás Bartik
Publikováno v: Inorganic Chemistry. 33:164-169
Direct sulfonation of bis(diphenylpbospbino)ethane, DPPE, leads to a complianted mixture of sulfonated products which includes 1,2-bis[bis(m-sodiosulfonatophenyl)phosphino]ethane, DPPETS. DPPETS is isolated in gram quantities by fractional precipitat
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7874e26909719d8db6f130fea1d76f13
https://doi.org/10.1021/ic00079a029
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9
Reactions of trisulfonated triphenylphosphine, TPPTS, with cobalt carbonyls in water
Autor: Tamás Bartik, Ipin Guo, Berit Bartik, Kenton H. Whitmire, Brian E. Hanson
Publikováno v: Scopus-Elsevier
The synthesis and characterization of a series of water-soluble cobalt carbonyl complexes is described: HCo(CO) 3 (TPPTS), HCo(CO) 2 (TPPTS) 2 , and [Co(CO) 3 (TPPTS)] - , where TPPTS=P(m-C 6 H 4 SO 3 Na) 3 . Investigation of the substitution of Co 2
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a050ef6f6a12b8727c3220023974a9c0
https://doi.org/10.1021/ic00077a030
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10
Effect of water on tributylphosphine modified cobalt carbonyl catalysts for the hydroformylation of olefins
Autor: Brian E. Hanson, Tamás Bartik, Berit Bartik
Publikováno v: Journal of Molecular Catalysis. 85:121-129
Water is seen to have a dramatic effect on the alcohol/aldehyde distribution in the P (nBu) 3 modified cobalt carbonyl catalyzed hydroformylation of 1-octene. In particular the rate of alcohol synthesis is greater in the presence of water. Under the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9549d326dff4ce475b96e433eaee6740
https://doi.org/10.1016/0304-5102(93)80094-b
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