1
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Hokmi S, Salehzadeh S, Gholiee Y. A computational study on the nature, strength and cooperativity of bonds in [M(η5–C60Me5)(CO)n] and [M(η5–Cp)(CO)n] (n = 3, M = Mn(i), Tc(i), Re(i); n = 2, M = Co(i), Rh(i), Ir(i)) complexes. NEW J CHEM 2022. [DOI: 10.1039/d1nj04416h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
It is shown that, due to cooperativity versus anticooperativity of bonds, the total interaction energy of a complex, having weaker metal–ligand bonds, can be comparable to or even larger than that of a similar complex having stronger bonds.
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Affiliation(s)
- Samaneh Hokmi
- Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
| | | | - Yasin Gholiee
- Department of Chemistry, Faculty of Science, Malayer University, Malayer, Iran
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2
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Lin HS, Matsuo Y. Functionalization of [60]fullerene through fullerene cation intermediates. Chem Commun (Camb) 2018; 54:11244-11259. [DOI: 10.1039/c8cc05965a] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fullerene cations, namely [60]fullerene radical cation (C60˙+) and organo[60]fullerenyl cation (RC60+), open paths for the efficient derivatization of a great variety of fullerenes.
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Affiliation(s)
- Hao-Sheng Lin
- Department of Mechanical Engineering
- School of Engineering
- The University of Tokyo
- Tokyo 113-8565
- Japan
| | - Yutaka Matsuo
- Department of Mechanical Engineering
- School of Engineering
- The University of Tokyo
- Tokyo 113-8565
- Japan
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3
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Barthelmes K, Winter A, Schubert US. Hybrid materials based on ruthenium and fullerene assemblies. Dalton Trans 2016; 45:14855-82. [PMID: 27559934 DOI: 10.1039/c6dt02613c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review provides a detailed overview about the synthesis, properties and applications of all ruthenium-fullerene compounds reported within the last 25 years. The incorporation of ruthenium centers into fullerene compounds by organometallic, covalent or non-covalent bonds has led to a broad range of useful hybrid materials. By this approach novel compounds could be generated that feature the electron-donating and electron-accepting character of ruthenium complexes and fullerenes, respectively. Intramolecular interactions between both units could result in new, combined properties that were studied in the spotlight of emerging applications, such as photovoltaics or catalysis.
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Affiliation(s)
- Kevin Barthelmes
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany.
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4
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Matsuo Y, Ogumi K, Maruyama M, Nakagawa T. Divergent Synthesis and Tuning of the Electronic Structures of Cobalt–Dithiolene–Fullerene Complexes for Organic Solar Cells. Organometallics 2014. [DOI: 10.1021/om400796p] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yutaka Matsuo
- Department
of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Keisuke Ogumi
- Department
of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masashi Maruyama
- Department
of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Takafumi Nakagawa
- Department
of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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5
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Matsuo Y, Kuninobu Y, Ito S, Sawamura M, Nakamura E. Friedel–Crafts functionalization of the cyclopentadienyl ligand in buckymetallocenes. Dalton Trans 2014; 43:7407-12. [DOI: 10.1039/c3dt52002a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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6
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Maruyama M, Imoto K, König M, Guldi DM, Ohkoshi SI, Nakamura E, Matsuo Y. Selective Synthesis of Co8S15 Cluster in Bowl-Shaped Template of the Pentaaryl[60]fullerene Ligand. J Am Chem Soc 2013; 135:10914-7. [DOI: 10.1021/ja405045t] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Masashi Maruyama
- Department of Chemistry, School
of Science, The University of Tokyo, Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kenta Imoto
- Department of Chemistry, School
of Science, The University of Tokyo, Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
| | - Matthias König
- Department of Chemistry and
Pharmacy and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, Erlangen 91058, Germany
| | - Dirk M. Guldi
- Department of Chemistry and
Pharmacy and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, Erlangen 91058, Germany
| | - Shin-ichi Ohkoshi
- Department of Chemistry, School
of Science, The University of Tokyo, Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
- CREST, JST, K’s
Gobancho, 7 Gobancho, Chiyoda-ku, Tokyo 102-0076, Japan
| | - Eiichi Nakamura
- Department of Chemistry, School
of Science, The University of Tokyo, Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yutaka Matsuo
- Department of Chemistry, School
of Science, The University of Tokyo, Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
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7
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Gamble AJ, Lynam JM, Thatcher RJ, Walton PH, Whitwood AC. cis-1,3,5-Triaminocyclohexane as a facially capping ligand for ruthenium(II). Inorg Chem 2013; 52:4517-27. [PMID: 23517123 DOI: 10.1021/ic302819j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Reaction of cis-[RuCl2(DMSO-S)3(DMSO-O)] with cis-1,3,5-triaminocyclohexane (tach) results in the formation of [RuCl(tach)(DMSO-S)2]Cl, a valuable precursor for a wide range of other tach-containing Ru complexes. Reaction of [RuCl(tach)(DMSO-S)2]Cl with the chelating nitrogen-based ligands (N-N = bipyridine, phenanthroline, and ethylenediamine) affords [Ru(N-N)(DMSO-S)2(tach)][Cl]2. A similar reaction between [RuCl(tach)(DMSO-S)]Cl with the chelating phosphorus-based ligands (P-P = dppm, dppe, dppp, dppb, dppv, and dppben) leads to the formation of [RuCl(P-P)(tach)]Cl. The structures of 10 examples of the tach-containing complexes have been determined by single crystal X-ray diffraction. An examination of the structural metrics obtained from these studies indicates that the tach ligand is a strong sigma donor. In addition, the presence of the NH2 groups in the tach ligand allow for participation in hydrogen bonding further modulating the coordinative properties of the ligand.
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Affiliation(s)
- Aimee J Gamble
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
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Maroto EE, Filippone S, Martín-Domenech A, Suarez M, Martín N. Switching the Stereoselectivity: (Fullero)Pyrrolidines “a la Carte”. J Am Chem Soc 2012; 134:12936-8. [DOI: 10.1021/ja306105b] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
| | | | | | - Margarita Suarez
- Laboratorio de Síntesis
Orgánica, Facultad de Química, Universidad de La Habana, 10400 La Habana, Cuba
| | - Nazario Martín
- IMDEA−Nanoscience, Campus de Cantoblanco, E-28049 Madrid, Spain
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10
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Sheu JH, Su MD. Computational Study of Cycloaddition Reactions of 16-Electron d8 ML4 Complexes with C60. J Phys Chem A 2011; 115:7664-72. [DOI: 10.1021/jp200343p] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jeng-Horng Sheu
- Department of Applied Chemistry, National Chiayi University, Chiayi 60004, Taiwan
| | - Ming-Der Su
- Department of Applied Chemistry, National Chiayi University, Chiayi 60004, Taiwan
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11
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Halim M, Kennedy RD, Suzuki M, Khan SI, Diaconescu PL, Rubin Y. Complexes of Gold(I), Silver(I), and Copper(I) with Pentaaryl[60]fullerides. J Am Chem Soc 2011; 133:6841-51. [DOI: 10.1021/ja201297r] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Merissa Halim
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Robert D. Kennedy
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Mitsuharu Suzuki
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Saeed I. Khan
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Paula L. Diaconescu
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Yves Rubin
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
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12
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Palladacycle mediated synthesis of cyano-functionalized chiral 1,2-diphosphine and subsequent functional group transformations. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.10.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Sheu JH, Su MD. A computational study of cycloaddition reactions of d8 metal tetroxide (Iron, Ruthenium, Osmium) complexes with C60. Dalton Trans 2011; 40:4122-30. [DOI: 10.1039/c0dt01445a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Halim M, Kennedy RD, Khan SI, Rubin Y. Gold(I) Triphenylphosphine Complexes Incorporating Pentaarylfulleride Ligands. Inorg Chem 2010; 49:3974-6. [DOI: 10.1021/ic100428f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Merissa Halim
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569
| | - Robert D. Kennedy
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569
| | - Saeed I. Khan
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569
| | - Yves Rubin
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569
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15
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Matsuo Y, Park BK, Mitani Y, Zhong YW, Maruyama M, Nakamura E. Synthesis of Ruthenium Pentamethyl[60]fullerene Complexes Bearing Monodentate Diphenylphosphino-methane, -ferrocene, and -butane Ligands. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.03.697] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Nakae T, Matsuo Y, Takagi M, Sato Y, Suenaga K, Nakamura E. Iron and Ruthenium Nanoparticles in Carbon Prepared by Thermolysis of Buckymetallocenes. Chem Asian J 2009; 4:457-65. [DOI: 10.1002/asia.200800331] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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17
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Yuan M, Pullarkat SA, Ma M, Zhang Y, Huang Y, Li Y, Goel A, Leung PH. Asymmetric Synthesis of Functionalized 1,2-Diphosphine via the Chemoselective Hydrophosphination of Coordinated Allylic Phosphines. Organometallics 2009. [DOI: 10.1021/om8009188] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mingjun Yuan
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Sumod A. Pullarkat
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Mengtao Ma
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Yi Zhang
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Yinhua Huang
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Yongxin Li
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Akash Goel
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Pak-Hing Leung
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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18
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Bouwkamp MW, Meetsma A. Pentaarylfullerenes as Noncoordinating Cyclopentadienyl Anions. Inorg Chem 2008; 48:8-9. [DOI: 10.1021/ic802034m] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marco W. Bouwkamp
- Molecular Inorganic Chemistry Department, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Auke Meetsma
- Molecular Inorganic Chemistry Department, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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19
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Matsuo Y, Iwashita A, Nakamura E. Group 6 Metal Complexes of the η5-Pentamethyl[60]fullerene. Organometallics 2008. [DOI: 10.1021/om800308n] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yutaka Matsuo
- Nakamura Functional Carbon Cluster Project, ERATO, Japan Science and Technology Agency, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Akihiko Iwashita
- Nakamura Functional Carbon Cluster Project, ERATO, Japan Science and Technology Agency, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Eiichi Nakamura
- Nakamura Functional Carbon Cluster Project, ERATO, Japan Science and Technology Agency, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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20
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Matsuo Y, Nakamura E. Selective Multiaddition of Organocopper Reagents to Fullerenes. Chem Rev 2008; 108:3016-28. [DOI: 10.1021/cr0684218] [Citation(s) in RCA: 321] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yutaka Matsuo
- Nakamura Functional Carbon Cluster Project, ERATO, Japan Science and Technology Agency, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Eiichi Nakamura
- Nakamura Functional Carbon Cluster Project, ERATO, Japan Science and Technology Agency, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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21
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Matsuo Y, Kuninobu Y, Muramatsu A, Sawamura M, Nakamura E. Synthesis of Metal Fullerene Complexes by the Use of Fullerene Halides. Organometallics 2008. [DOI: 10.1021/om8001262] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yutaka Matsuo
- Nakamura Functional Carbon Cluster Project, ERATO, Japan Science and Technology Agency, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yoichiro Kuninobu
- Nakamura Functional Carbon Cluster Project, ERATO, Japan Science and Technology Agency, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ayako Muramatsu
- Nakamura Functional Carbon Cluster Project, ERATO, Japan Science and Technology Agency, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masaya Sawamura
- Nakamura Functional Carbon Cluster Project, ERATO, Japan Science and Technology Agency, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Eiichi Nakamura
- Nakamura Functional Carbon Cluster Project, ERATO, Japan Science and Technology Agency, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Matsuo Y, Matsuo K, Nanao T, Marczak R, Gayathri S, Guldi D, Nakamura E. A Ruthenium Bridge in Fullerene–Ferrocene Arrays: Synthesis of [Ru(C60Me5)R(CO)2] (R=C6H4Fc, C≡CFc) and Their Charge-Transfer Properties. Chem Asian J 2008; 3:841-8. [DOI: 10.1002/asia.200700379] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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23
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Matsuo Y. Creation of Cyclic π-Electron-Conjugated Systems through the Functionalization of Fullerenes and Synthesis of Their Multinuclear Metal Complexes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2008. [DOI: 10.1246/bcsj.81.320] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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24
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Sheu JH, Su MD. Cycloaddition Reactions of 16-Electron d4 Metallocene Complexes with C60: A Theoretical Study. Chemistry 2007; 13:6171-8. [PMID: 17476696 DOI: 10.1002/chem.200601839] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The potential-energy surfaces of the cycloaddition reaction Cp(2)M+C60-->Cp(2)M(C60) (Cp=eta5-C(5)H(5); M=Cr, Mo, and W) were studied at the B3LYP/LANL2DZ level of theory. Two competing reaction pathways were found, which can be classified as [6,5] attack (path A) and [6,6] attack (path B). Given the same reaction conditions, the [6,6]-attack pathway for cycloaddition to C60 is more favorable than the [6,5]-attack pathway, both kinetically and thermodynamically. A qualitative model, based on the theory of Pross and Shaik, was used to develop an explanation for the reaction barrier heights. Thus, our theoretical findings suggest that the singlet-triplet splitting DeltaE(st) (=E(triplet)-E(singlet)) of the 16-electron d4 Cp(2)M and C60 species are a guide to predicting their reactivity towards cycloaddition. Our model results demonstrate that the propensity for cycloaddition to C60 increases in the order Cp(2)Cr<Cp(2)Mo<Cp(2)W. We show that both electronic and geometric effects play a decisive role in determining the energy barriers and reaction enthalpies.
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Affiliation(s)
- Jeng-Horng Sheu
- Department of Applied Chemistry, National Chiayi University, Chiayi 60004, Taiwan
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25
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Lan CY, Su MD. Theoretical Study of Cycloaddition Reactions of Heavy Carbenes with C60. J Phys Chem A 2007; 111:6232-40. [PMID: 17591759 DOI: 10.1021/jp072400f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The potential energy surfaces for the cycloaddition reaction Me2X:+C60-->Me2X(C60) (X=C, Si, Ge, Sn, and Pb) have been studied at the B3LYP/LANL2DZ level of theory. It has been found that there are two competing pathways in these reactions, which can be classified as a [6,5]-attack (path 1) and a [6,6]-attack (path 2). It was found that, given the same reaction conditions, the cycloaddition reaction of C60 via a [6,6]-attack is more favorable than that via a [6,5]-attack, both kinetically and thermodynamically. A qualitative model that is based on the theory of Pross and Shaik has been used to develop an explanation for the reaction barrier heights. As a result, our theoretical investigations suggest that the singlet-triplet splitting DeltaEst(=Etriplet-Esinglet) of the 6 valence electron Me2X: and C60 species can be used as a guide to predict their reactivity toward cycloaddition reactions. Our model results demonstrate that the reactivity of heavy carbene cycloaddition to C60 decreases in the order Me2C:>Me2Si:>Me2Ge>Me2Sn:>Me2Pb:. As a consequence, we show that electronic effects play a decisive role in determining the energy barriers as well as the reaction enthalpy.
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Affiliation(s)
- Chao-Ying Lan
- Department of Applied Chemistry, National Chiayi University, Chiayi 60004, Taiwan
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26
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Matsuo Y, Uematsu T, Nakamura E. Synthesis and Catalytic Activity of η1-Allyl and η3-Allyl, Ethyl, and Hydrido Complexes of Ruthenium–Pentamethyl[60]fullerene. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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27
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Iwashita A, Matsuo Y, Nakamura E. AlCl3-Mediated Mono-, Di-, and Trihydroarylation of [60]Fullerene. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200700062] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Iwashita A, Matsuo Y, Nakamura E. AlCl3-Mediated Mono-, Di-, and Trihydroarylation of [60]Fullerene. Angew Chem Int Ed Engl 2007; 46:3513-6. [PMID: 17385815 DOI: 10.1002/anie.200700062] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Akihiko Iwashita
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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29
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Zhong YW, Matsuo Y, Nakamura E. Chiral Ruthenium–Allenylidene Complexes That Bear a Fullerene Cyclopentadienyl Ligand: Synthesis, Characterization, and Remote Chirality Transfer. Chem Asian J 2007; 2:358-66. [PMID: 17441171 DOI: 10.1002/asia.200600341] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Ruthenium complexes that bear both a fullerene and an allenylidene ligand, [Ru(C60Me5)((R)-prophos)=C=C=CR1R2]PF6 (prophos = 1,2-bis(diphenylphosphanyl)propane), were prepared by the reaction of [Ru(C60Me5)Cl((R)-prophos)] and a propargyl alcohol in better than 90% yields, and characterized by 1H, 13C, and 31P NMR, IR, and UV/Vis/NIR spectroscopy and MS. Cyclic voltammograms of these complexes showed one reversible or irreversible reduction wave due to the allenylidene part, and two reversible reduction waves due to the fullerene core. Nucleophilic addition of RMgBr or RLi proceeded regioselectively at the distal carbon atom of the allenylidene array. The reaction took place with a 60:40-95:5 level of diastereoselectivity with respect to the original chirality in the (R)-prophos ligand, which is located six atoms away from the electrophilic carbon center.
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Affiliation(s)
- Yu-Wu Zhong
- Nakamura Functional Carbon Cluster Project, ERATO, Japan Science and Technology Agency, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Matsuo Y, Muramatsu A, Kamikawa Y, Kato T, Nakamura E. Synthesis and Structural, Electrochemical, and Stacking Properties of Conical Molecules Possessing Buckyferrocene on the Apex. J Am Chem Soc 2006; 128:9586-7. [PMID: 16866485 DOI: 10.1021/ja062757h] [Citation(s) in RCA: 113] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of conical molecules featuring a [60]fullerene/ferrocene hybrid and five aralkyl side chains (Fe[C60{C6H4-(OCO-C6H3-(OR)2-3,4)-4}5]Cp) have been synthesized and examined for their structural and electrochemical properties as well as their ability to form supramolecular structures in crystals and liquid crystals. When the R group on the side is a methyl group, the compound forms crystals in which the dipolar conical molecules are stacked head-to-tail to form a columnar structure. When the R group is as long as a C18H38 group, the compound forms liquid crystals. Oxidation of the liquid crystalline compound by an aminium salt [(4-BrC6H4)3N][SbCl6] produces the corresponding paramagnetic Fe(III) compound that also exhibits liquid crystalline properties.
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Affiliation(s)
- Yutaka Matsuo
- Nakamura Functional Carbon Cluster Project, ERATO, Japan Science and Technology Agency, Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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