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Chemistry of the highly stable hindered cobalt sandwich compound (η5-Cp)Co(η4-C4Ph4) and its derivatives. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.05.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Singh J, Kumar D, Singh N, Elias AJ. New Chiral Palladacycles from an Unprecedented Cyclopalladation of Cyclobutadiene-Bound Phenyl Groups of Cobalt Sandwich Compounds. Organometallics 2014. [DOI: 10.1021/om500004n] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jatinder Singh
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India
| | - Dheeraj Kumar
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India
| | - Nem Singh
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India
| | - Anil J. Elias
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India
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Keshav K, Kumar D, Elias AJ. Synthesis, spectral, and structural studies of porphyrins having sterically hindered [η(5)-CpCo(η(4)-C4Ph4)] cobalt sandwich units at the meso positions. Inorg Chem 2013; 52:12351-66. [PMID: 24152207 DOI: 10.1021/ic401099c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Synthesis, spectral, and structural studies of the first examples of porphyrins substituted at the meso positions with sterically hindered η(5)-CpCo(η(4)-C4Ph4) cobalt sandwich units are described. The novel dipyrromethane derived cobalt sandwich compound {η(5)-[(C4H4N)2CH]C5H4}Co(η(4)-C4Ph4) 1, as well as its parent aldehyde, η(5)-[C5H4(CHO)]Co(η(4)-C4Ph4), were used in the synthesis of porphyrins having one or two η(5)-CpCo(η(4)-C4Ph4) groups at their meso positions. 1,9-Diformyldipyrromethane derived η(5)-CpCo(η(4)-C4Ph4) 2 was synthesized using dipyrromethane 1 under Vilsmeier conditions. A reaction of 2 with unsubstituted dipyrromethane under basic conditions in the presence of Pd(C6H5CN)2Cl2 yielded an A-type palladium coordinated porphyrin 3 [where A = η(5)-CpCo(η(4)-C4Ph4)]. A similar reaction of 2 with meso aryl and ferrocenyl-substituted dipyrromethanes yielded trans-AB type palladium coordinated porphyrins 4-6 [where A = η(5)-CpCo(η(4)-C4Ph4) and B = 4-tert-butylphenyl 4, ferrocenyl 5, and pentafluorophenyl 6]. Reactions of 2 with 5-ferrocenyl dipyrromethane under the same reaction conditions in the presence of Ni(acac)2 and Zn(OAc)2 gave the trimetallic nickel(II) and zinc(II) complexed trans-AB type porphyrins 7 and 8 having both cobalt and iron sandwich units at the meso positions. Crystal structure of the Pd(II) porphyrin 5 and nickel(II) porphyrin 7 showed nonplanar structures having distinct ruffle type distortion of the porphyrin ring. Demetalation of the zinc(II) trans-AB type porphyrin 8 in the presence of trifluoroacetic acid gave the metal free base porphyrin 9. Reactions of the cobalt sandwich aldehyde [(η(5)-C5H4(CHO)]Co(η(4)-C4Ph4) with sterically hindered dipyrromethane derivatives under acid-catalyzed condensation reactions gave trans-A2B2 type porphyrins [where A = η(5)-CpCo(η(4)-C4Ph4) and B = pentafluorophenyl, 10 mesityl 11]. In contrast, reactions of [η(5)-C5H4(CHO)]Co(η(4)-C4Ph4) with sterically unhindered meso-4-tert-butylphenyl dipyrromethane resulted in both AB3 12 and cis-A2B2 13 type porphyrins [where A = η(5)-CpCo(η(4)-C4Ph4) and B = (4-tert-butylphenyl] as a result of scrambling. The new porphyrin derivatives have been structurally characterized, and their spectral and electrochemical features were determined.
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Affiliation(s)
- Karunesh Keshav
- Department of Chemistry, Indian Institute of Technology , Delhi, Hauz Khas, New Delhi, 110016, India
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Synthesis and characterization of the first examples of ferrocene and [η5-CpCo(η4-C4Ph4)] derived 2-pyridones. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2013.07.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Singh N, Elias AJ. Cyclopentadienyl 1,2- and 1,3-Disubstituted Cobalt Sandwich Compounds {η5-[MeOC(O)]2C5H3} Co(η4-C4Ph4): Precursors for Sterically Hindered Bidentate Chiral and Achiral Ligands. Organometallics 2012. [DOI: 10.1021/om300027c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nem Singh
- Department of Chemistry, Indian Institute of Technology, Delhi,
Hauz Khas, New Delhi 110016, India
| | - Anil J. Elias
- Department of Chemistry, Indian Institute of Technology, Delhi,
Hauz Khas, New Delhi 110016, India
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Singh N, Elias AJ. Palladacycles of novel bisoxazoline chelating ligands based on the dimeric cyclobutadiene linked cobalt sandwich compound [(η5-Cp)Co(η4-C4Ph3)]2. Dalton Trans 2011; 40:4882-91. [DOI: 10.1039/c0dt01737j] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Nem Singh
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi, 110016, India
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Affiliation(s)
- E. W. Neuse
- a Department of Chemistry , University of the Witwatersrand , Johannesburg , 2001 , Republic of South Africa
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Kumar MS, Upreti S, Elias AJ. Synthesis and Characterization of Novel Fluorophosphazene-Derived Cobaltacyclopentadienyl Metallacycles: Reagents for Assembly of Aryl-Bridged Fluorophosphazenes. Inorg Chem 2006; 45:7835-42. [PMID: 16961376 DOI: 10.1021/ic0609204] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reaction of (beta-phenylethynyl)pentafluorocyclotriphosphazene, F5P3N3C identical with CPh, with in situ generated eta5-(MeOC(O)C5H4)Co(PPh3)2 resulted in the formation of two isomers of cobaltacyclopentadienylmetallacycles, (eta(5)-carbomethoxycyclopentadienyl)(triphenylphosphine)-2,5-bis(pentafluorocyclotriphosphazenyl)-3,4-diphenyl cobaltacyclopentadiene (1) and (eta5-carbomethoxycyclopentadienyl)(triphenylphosphine)-2,4-bis(pentafluorocyclotriphosphazenyl)-3,5-diphenyl cobaltacyclopentadiene (2), along with the sandwich compound [eta5-carbomethoxycyclopentadienyl]-[eta4-1,3-bis(pentafluorocyclotriphosphazenyl)-2,4-diphenylcyclobutadiene]cobalt (3). Formation of cobaltacyclopentadienylmetallacycles or cyclobutadienylmetallocene having two fluorophosphazene units on vicinal carbon atoms of the rings was not observed in this reaction. Reaction of 1 with diphenylacetylene resulted in the formation of a novel aryl-bridged fluorophosphazene, 1,4-bis(pentafluorocyclotriphosphazenyl)-2,3,5,6-tetraphenyl benzene (4), and the conversion of cobaltametallacycle to the sandwich compound, [eta5-(MeOC(O)C5H4]Co(eta4-C4Ph4) (5). Reaction of 1 with phenylacetylene resulted in the formation of aryl-bridged fluorophosphazene, 1,4-bis(pentafluorophosphazenyl)-2,3,5,-triphenyl benzene (6). New compounds 1-4 were structurally characterized. In compound 1, the two fluorophosphazene units were oriented in gauche form with respect to each other. However, in compounds 2 and 3, they were eclipsed to each other, and in compound 4, they were oriented anti to each other.
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Affiliation(s)
- Muthiah Senthil Kumar
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110 016, India
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Synthesis of (η6-arene)tricarbonylmetal and (σ-nitrogen)pentacarbonylmetal complexes of 1,2,3,4-tetrahydroquinoline and 1,2,3,4-tetrahydroisoquinoline with chromium, molybdenum and tungsten. J Organomet Chem 2003. [DOI: 10.1016/s0022-328x(03)00140-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Rose-Munch F, Rose E. cine andtele Nucleophilic Substitutions in (η6-Arene)tricarbonylchromium and Tricarbonyl(η5-cyclohexadienyl)manganese Complexes. Eur J Inorg Chem 2002. [DOI: 10.1002/1099-0682(200206)2002:6<1269::aid-ejic1269>3.0.co;2-9] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Rietz RR, Zalkin A, Templeton DH, Edelstein NM, Templeton LK. Preparation and molecular and crystal structures of uranium(IV) borohydride-dimethyl ether and uranium(IV) borohydride-diethyl ether. Inorg Chem 2002. [DOI: 10.1021/ic50181a028] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Cash GG, Pettersen RC. Crystal and molecular structure of (3,4-bis(1-propynyl)-2,5-dimethylcyclopentadienone)tricarbonyliron(0), [.eta.4-C4(C3H3)2(CH3)2CO]Fe(CO)3. Inorg Chem 2002. [DOI: 10.1021/ic50181a027] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Redox chemistry and functionalities of conjugated ferrocene systems. ADVANCES IN INORGANIC CHEMISTRY 2002. [DOI: 10.1016/s0898-8838(02)53003-8] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Berger A, de Cian A, Djukic JP, Fischer J, Pfeffer M. Syntheses of Ortho-Mercurated and -Palladated (η6-Arene)tricarbonylchromium Complexes. Organometallics 2001. [DOI: 10.1021/om010152i] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexsandro Berger
- Laboratoire de Synthèses Métallo-induites and Laboratoire de Cristallographie, UMR 7513 CNRS, Université Louis Pasteur, 4, rue Blaise Pascal, 67070 Strasbourg, France
| | - André de Cian
- Laboratoire de Synthèses Métallo-induites and Laboratoire de Cristallographie, UMR 7513 CNRS, Université Louis Pasteur, 4, rue Blaise Pascal, 67070 Strasbourg, France
| | - Jean-Pierre Djukic
- Laboratoire de Synthèses Métallo-induites and Laboratoire de Cristallographie, UMR 7513 CNRS, Université Louis Pasteur, 4, rue Blaise Pascal, 67070 Strasbourg, France
| | - Jean Fischer
- Laboratoire de Synthèses Métallo-induites and Laboratoire de Cristallographie, UMR 7513 CNRS, Université Louis Pasteur, 4, rue Blaise Pascal, 67070 Strasbourg, France
| | - Michel Pfeffer
- Laboratoire de Synthèses Métallo-induites and Laboratoire de Cristallographie, UMR 7513 CNRS, Université Louis Pasteur, 4, rue Blaise Pascal, 67070 Strasbourg, France
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Bitterwolf TE, Everly SC, Rheingold AL, Yapp G. Convergent synthetic routes to heterobimetallic compounds: Crystal and molecular structure of 1-(η5-cyclopentadienyl manganese tricarbonyl)-1-(η6-phenyl chromium tricarbonyl) ethanol. J Organomet Chem 1997. [DOI: 10.1016/s0022-328x(96)06679-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Uemura M. Tricarbonyl(n6-Arene)Chromium Complexes in Organic Synthesis. ACTA ACUST UNITED AC 1991. [DOI: 10.1016/b978-0-89232-948-9.50009-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
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17
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Boese R, Myrabo RL, Newman DA, Vollhardt KPC. Auf dem Weg zu Oligocyclopentadienyl-Liganden: Synthese und erste Reaktionen der beiden isomeren Tercyclopentadienyle und ihrer Übergangsmetallkomplexe. Angew Chem Int Ed Engl 1990. [DOI: 10.1002/ange.19901020535] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Bitterwolf TE, Herzog R, Rockswold PD. Synthesis and conformations of chromium tricarbonyl substituted diarenes. J Organomet Chem 1987. [DOI: 10.1016/s0022-328x(00)98976-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Haenel MW, Irngartinger H, Krieger C. Transanulare Wechselwirkung bei [m. n]Phanen, 27. Modelle für Excimere und Exciplexe: [2.2]Phane des Fluorens, 9-Fluorenons und 9-Fluorenyl-Anions. ACTA ACUST UNITED AC 1985. [DOI: 10.1002/cber.19851180115] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Rausch M, Tokas E, Mintz E, Clearfield A, Mangion M, Bernal I. Studies on the reactions of (η5cyclopentadienyl)dicarbonylcobalt with phenyl-1-naphthylacetylene and with phenyl-2-naphthylacetylene, and an X-ray crystallographic determination of one of the products: (η5cyclopentadienyl)-[η4-3,3-di-(1-naphthyl)-2,4diphenylcyclobutadiene]cobalt. J Organomet Chem 1979. [DOI: 10.1016/s0022-328x(00)81861-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Rausch M, Higbie F, Westover G, Clearfield A, Gopal R, Troup J, Bernal I. Studies on the reactions of ferrocenylphenylacetylene and diferrocenyl-acetylene with (η5-cyclopentadienyl)dicarbonylcobalt, and an x-ray crystallographic determination of one of the products: (η5-cyclopentadienyl)(η4-1,3-diferrocenyl-2,4-diphenylcyclobutadiene)cobalt. J Organomet Chem 1978. [DOI: 10.1016/s0022-328x(00)94126-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Clearfield A, Gopal R, Rausch M, Tokas E, Higbie F, Bernal I. The synthesis and molecular structures of two cyclobutadienecobalt complexes formed by the reaction between π-cyclopentadienyldicarbonylcobalt and phenyl-2-thienylacetylene. J Organomet Chem 1977. [DOI: 10.1016/s0022-328x(00)80865-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lee WS, Brintzinger HH. Reaction patterns of cyclopentadienylcobalt(I) carbonyl and acetylene derivatives. J Organomet Chem 1977. [DOI: 10.1016/s0022-328x(00)84199-6] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lee WS, Brintzinger HH. Reactive intermediates in the photolysis of cyclopentadienylcobalt(I) dicarbonyl and in the reduction of cyclopentadienylcobalt(III) carbonyl diiodide. J Organomet Chem 1977. [DOI: 10.1016/s0022-328x(00)84198-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Gastinger R, Rausch M, Sullivan D, Palenik G. The synthesis and molecular structure of 1-(η5-cyclopentadienyl)-1-triphenylphosphine-2,3,4,5-tetrakis(pentafluorophenyl)rhodole. J Organomet Chem 1976. [DOI: 10.1016/s0022-328x(00)87213-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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The diphenylmethylbis(π-chromium tricarbonyl) carbonium ion. Isolation of a stable hexafluorophosphate salt. J Organomet Chem 1975. [DOI: 10.1016/s0022-328x(00)82540-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Gardner SA, Tokas EF, Rausch MD. Reactions of partially and totally halogenated diphenylacetylenes with π-cyclopentadienyldicarbonyl-cobalt and -rhodium. J Organomet Chem 1975. [DOI: 10.1016/s0022-328x(00)91103-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Arene Transition Metal Chemistry. ADVANCES IN ORGANOMETALLIC CHEMISTRY 1975. [DOI: 10.1016/s0065-3055(08)60682-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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Dickson R, Fraser P. Compounds Derived from Alkynes and Carbonyl Complexes of Cobalt. ADVANCES IN ORGANOMETALLIC CHEMISTRY 1974. [DOI: 10.1016/s0065-3055(08)60454-2] [Citation(s) in RCA: 303] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Rockett BW, Marr G. Organic reactions of selected π-complexes annual survey covering the year 1972. J Organomet Chem 1973. [DOI: 10.1016/s0022-328x(00)80630-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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A variable temperature NMR study of carbonyldiphenylacetylene tris(π-cyclopentadienylrhodium) and its bis(pentafluorophenyl) derivative. J Organomet Chem 1973. [DOI: 10.1016/s0022-328x(00)89944-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Gardner SA, Rausch MD. The formation and acetylation of π-cyclopentadienyl-gp-cyclobutadienerhodium. J Organomet Chem 1973. [DOI: 10.1016/s0022-328x(00)89988-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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