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Hannigan SF, Lum JS, Bacon JW, Moore C, Golen JA, Rheingold AL, Doerrer LH. Room Temperature Stable Organocuprate Copper(III) Complex. Organometallics 2013. [DOI: 10.1021/om4000538] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Steven F. Hannigan
- Department of Chemistry, Boston University, Boston, Massachusetts
02215, United States
| | - June S. Lum
- Department of Chemistry, Boston University, Boston, Massachusetts
02215, United States
| | - Jeffrey W. Bacon
- Department of Chemistry, Boston University, Boston, Massachusetts
02215, United States
| | - Curtis Moore
- Department of Chemistry and Biochemistry, University of California, San Diego,
La Jolla, California
92093, United States
| | - James A. Golen
- Department of Chemistry and Biochemistry, University of California, San Diego,
La Jolla, California
92093, United States
| | - Arnold L. Rheingold
- Department of Chemistry and Biochemistry, University of California, San Diego,
La Jolla, California
92093, United States
| | - Linda H. Doerrer
- Department of Chemistry, Boston University, Boston, Massachusetts
02215, United States
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2
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Jiang XD, Matsukawa S, Kojima S, Yamamoto Y. Synthesis and characterization of antiapicophilic arsoranes and related compounds. Inorg Chem 2012; 51:10996-1006. [PMID: 23013474 DOI: 10.1021/ic3014893] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Utilizing bulky bidentate ligand systems with C(2)F(5) and n-C(3)F(7) groups, antiapicophilic arsoranes (5b and 5c, respectively) were synthesized. A kinetic study on the isomerization of these arsoranes to their more stable isomers showed that the barriers increased in the order of CF(3) < C(2)F(5) < n-C(3)F(7) in accord with their steric bulk. It was also revealed that the degree of freezing isomerization was larger for the change from CF(3) to C(2)F(5) than from C(2)F(5) to n-C(3)F(7), obvious from the differences in activation free energy at 363 K of 1.6 and 0.3 kcal mol(-1), respectively. X-ray structural analysis of several precursors of these two systems disclosed the unique structures of these compounds.
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Affiliation(s)
- Xin-Dong Jiang
- The Key Laboratory for Special Functional Materials, Ministry of Education, Henan University, Kaifeng, 475-004, China.
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Akiba KY. Studies on hypervalent compounds and synthetic work using heteroaromatic cations. HETEROATOM CHEMISTRY 2011. [DOI: 10.1002/hc.20726] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Yamamichi H, Matsukawa S, Kojima S, Ando K, Yamamoto Y. Structure and dynamic behavior of neutral hexacoordinate antimony compounds with intramolecular coordination. HETEROATOM CHEMISTRY 2011. [DOI: 10.1002/hc.20721] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Chovancová M, Jambor R, Růžička A, Jirásko R, Císařová I, Dostál L. Synthesis, Structure, and Reactivity of Intramolecularly Coordinated Organoantimony and Organobismuth Sulfides. Organometallics 2009. [DOI: 10.1021/om801194h] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marie Chovancová
- Departments of General and Inorganic Chemistry and of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, nám. Čs. Legií 565, CZ-532 10, Pardubice, and Faculty of Natural Science, Charles University in Prague, Hlavova 2030, CZ-128 40, Prague 2, Czech Republic
| | - Roman Jambor
- Departments of General and Inorganic Chemistry and of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, nám. Čs. Legií 565, CZ-532 10, Pardubice, and Faculty of Natural Science, Charles University in Prague, Hlavova 2030, CZ-128 40, Prague 2, Czech Republic
| | - Aleš Růžička
- Departments of General and Inorganic Chemistry and of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, nám. Čs. Legií 565, CZ-532 10, Pardubice, and Faculty of Natural Science, Charles University in Prague, Hlavova 2030, CZ-128 40, Prague 2, Czech Republic
| | - Robert Jirásko
- Departments of General and Inorganic Chemistry and of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, nám. Čs. Legií 565, CZ-532 10, Pardubice, and Faculty of Natural Science, Charles University in Prague, Hlavova 2030, CZ-128 40, Prague 2, Czech Republic
| | - Ivana Císařová
- Departments of General and Inorganic Chemistry and of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, nám. Čs. Legií 565, CZ-532 10, Pardubice, and Faculty of Natural Science, Charles University in Prague, Hlavova 2030, CZ-128 40, Prague 2, Czech Republic
| | - Libor Dostál
- Departments of General and Inorganic Chemistry and of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, nám. Čs. Legií 565, CZ-532 10, Pardubice, and Faculty of Natural Science, Charles University in Prague, Hlavova 2030, CZ-128 40, Prague 2, Czech Republic
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Schröder G, Okinaka T, Mimura Y, Watanabe M, Matsuzaki T, Hasuoka A, Yamamoto Y, Matsukawa S, Akiba KY. Syntheses, Crystal and Solution Structures, Ligand-Exchange, and Ligand-Coupling Reactions of Mixed Pentaarylantimony Compounds. Chemistry 2007; 13:2517-29. [PMID: 17245787 DOI: 10.1002/chem.200601439] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
All possible combinations of mixed pentaarylantimony compounds bearing p-methylphenyl and p-trifluoromethylphenyl groups were synthesized; ArnTol5-nSb (n=0-5: Ar=p-CF3C6H4, Tol=p-CH3C6H4): Tol5Sb (1), ArTol4Sb (2), Ar2Tol3Sb (3), Ar3Tol2Sb (4), Ar4TolSb (5), and Ar5Sb (6). Compounds 2-5 are the first well-characterized examples of mixed acyclic pentaarylantimony species. The structures of 2-6 were determined by X-ray crystallography to feature trigonal-bipyramidal (TBP) geometry with the more electronegative p-trifluoromethylphenyl substituents selectively occupying the apical positions. Consideration of the chemical shifts of the ipso carbons of the aryl and tolyl groups suggested that the solution structures of 1-6 were also TBP, although their pseudorotation could not be frozen even at -80 degrees C. Ligand-exchange reactions (LERs) took place between 1 and 6 at approximately 60 degrees C in [D6]benzene and all six species 1-6 were found in the equilibrium mixture. The relative stabilities of 1-6 were determined quantitatively by comparison of the observed molar ratios of 1-6 in equilibrium with calculated statistical molar ratios, and Ar2Tol3Sb (3) was found to be the most stable. The ligand-coupling reactions (LCRs) of 2-5 in solution were greatly accelerated by adding Cu(acac)2 or Li+TFPB- (TFPB: [3,5-(CF3)2 C6H3]4 B), whereby the rate becomes comparable to the LER. The use of flash vacuum thermolysis (FVT) allowed the LCR to occur with very little ligand-exchange; the exception ArTol4Sb had very fast ligand-exchange. The selectivities of the LCRs were calculated from the yield of the biaryls synthesized by using FVT. These results were highly consistent with reactions catalyzed in solution, in which bitolyl was not obtained at all. The experimental results suggested that the LCR of pentaarylantimony compounds proceeds in the manner of apical-apical coupling.
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Affiliation(s)
- Günter Schröder
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
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Kojima S, Kajiyama K, Nakamoto M, Matsukawa S, Akiba KY. The Ligand-Exchange Process of P-Hapical Phosphoranes and the Thermal Formation and Pseudorotation of Anti-Apicophilic Spirophosphoranes. European J Org Chem 2006. [DOI: 10.1002/ejoc.200500510] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kojima S, Kawaguchi K, Matsukawa S, Akiba KY. Stereospecific stilbene formation from β-hydroxy-α,β-diphenylethylphosphoranes. Mechanistic proposals based upon stereochemistry. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(02)01407-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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9
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Toyota K, Wakisaka Y, Yamamoto Y, Akiba KY. Evidence for Intramolecular Permutation (Pseudorotation) at the Central Antimony Atom and Strong Equatophilicity of an Iron and a Ruthenium Ligand in Pentacoordinate Hypervalent Antimony Compounds. Organometallics 2000. [DOI: 10.1021/om000790l] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Koichiro Toyota
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - Yukiya Wakisaka
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - Yohsuke Yamamoto
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - Kin-ya Akiba
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
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Toyota K, Yamamoto Y, Akiba KY. Synthesis and Structures of Hypervalent Antimony Compounds Bearing an Antimony−Group 6 Transition Metal Bond. Organometallics 2000. [DOI: 10.1021/om000791d] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Koichiro Toyota
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - Yohsuke Yamamoto
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - Kin-ya Akiba
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
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Yamamoto Y, Toyota K, Wakisaka Y, Akiba KY. Synthesis and X-ray crystal structures of hypervalent arsenic compounds bearing arsenic-iron bonds. HETEROATOM CHEMISTRY 2000. [DOI: 10.1002/(sici)1098-1071(2000)11:1<42::aid-hc7>3.0.co;2-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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12
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The stereospecific olefin formation reaction of 10-P-5 β-hydroxy-α,β-diphenylethylphosphoranes. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)10069-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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13
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Kajiyama K, Kojima S, Akiba KY. Synthesis and characterization of intra- and intermolecular hydrogen bonding isomers of PH (apical) phosphoranes bearing a hydroxyl group and their thermal cyclization. Tetrahedron Lett 1996. [DOI: 10.1016/0040-4039(96)01923-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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