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Affiliation(s)
- E. L. Muetterties
- Contribution No. 379 from the Chemical Department, Experimental Station, E. I. du Pont, de Nemours and Company Wilmington, Delaware
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Muetterties EL, Beier BF. Structural Form and Nonrigidity in 6, 7, 8, and 9-Atom Polyhedral Boranes - Molecular Orbital Calculations. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bscb.19750840413] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Muetterties EL. Metal Clusters in Catalysis III. - Clusters as Models for Chemisorption Processes and Heterogeneous Catalysis. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bscb.19750841006] [Citation(s) in RCA: 220] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Abstract
Molecular orbital studies implicate multicenter metal-hydrogen-carbon interactions as contributors to the bonding of chemisorbed hydrocarbons on clean metal surfaces. The most stable geometries appear to be those that achieve the maximum multicenter bonding to the coordinately unsaturated metal atoms in the vicinity of the anchoring metal-carbon interaction. Energy differences between possible surface sites are of the same magnitude as stabilization energies for three-center bonding of hydrogen atoms to the metal surface. Accordingly, secondary interactions of hydrogen with neighboring metal atoms may be significant determining factors in surface structures. The model predictions are compared with known structures and are used to propose a mechanism for hydrocarbon reactions on metal surfaces. These metal-hydrogen-carbon interactions are presumed to be intermediate points or states in C-H bond-breaking processes.
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Affiliation(s)
- R M Gavin
- Department of Chemistry, Haverford College, Haverford, Pennsylvania 19041
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Abstract
A set of metal carbonyl clusters, Ru(3)(CO)(12), Os(3)(CO)(12), and Ir(4)(CO)(12), has been evaluated as catalysts for a series of hydrocarbon reactions which comprise skeletal rearrangement, metathesis, dehydrogenation, hydrogenation, isomerization, and H-D exchange. None was especially effective as a hydrogenation catalyst even for olefins. Os(3)(CO)(12) was a catalyst for H-D exchange between C(6)H(6) and D(2) at 195 degrees but the ruthenium congener was inactive at temperatures below 175 degrees , a temperature where ruthenium metal formed at an appreciable rate. Deuterium incorporation in the benzene was a single-step process. Ir(4)(CO)(12) was an effective catalyst for the conversion of cyclohexadiene to cyclohexene and benzene. A similar reaction occurred with cyclohexene but the rate was extremely low at 160 degrees . The ruthenium and osmium clusters catalyzed the isomerization of linear hexenes, with the former the more active. Relative rates for the hexenes were 1 > 2 > 3. At high temperatures, the osmium and iridium clusters catalyzed skeletal reactions of 2-hexene, as evidenced by the formation of pentenes, heptenes, heptanes, and small amounts of propane.
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Affiliation(s)
- K G Caulton
- Department of Chemistry, Indiana University, Bloomington, Ind., 47401
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Brown RK, Williams JM, Fredrich MF, Day VW, Sivak AJ, Muetterties EL. Metal cluster chemistry: Structure and stereochemistry in the polynuclear rhodium hydrides H(n)Rh(n)[P(OR)(3)](2n). Proc Natl Acad Sci U S A 2010; 76:2099-102. [PMID: 16592645 PMCID: PMC383543 DOI: 10.1073/pnas.76.5.2099] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Crystallographic analyses of x-ray and neutron diffraction data have provided a definitive structural representation of {HRh[P(O-i-C(3)H(7))(3)](2)}(2) and {HRh[P(OCH(3))(3)](2)}(3). These polynuclear hydrides are generated from square planar H(2)Rh[P(OR)(3)](2) units by edge (hydrogen atom) sharing and by vertex (hydrogen atom) sharing to form the dimeric and trimeric structures, respectively. The square-planar units are held together through four-center and three-center two-electron Rh-H-Rh bonds in the dimer and trimer, respectively. The dimer and trimer molecules each add one molecule of hydrogen to form H[(i-C(3)H(7)O)(3)P](2)RhH(3)Rh [P(O-i-C(3)H(7))(3)](2) and H(5)Rh(3)[P(OCH(3))(3)](6), respectively. NMR spectral information has served to define the stereochemical features of these polyhydrides. The significance of this chemistry in the metal cluster-metal surface analogy is described.
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Affiliation(s)
- R K Brown
- Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439
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Meakin P, Muetterties EL, Jesson JP. Stereochemically Nonrigid Six-Coordinate Molecules.' III. The Temperature-Dependent 'H and 31P Nuclear Magnetic Resonance Spectra of Some Iron and Ruthenium Dihydrides. J Am Chem Soc 2002. [DOI: 10.1021/ja00782a600] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kulzick M, Price RT, Muetterties EL, Day VW. A new member of the (HRhL2)x cluster class: [(.mu.-H)Rh(1,5-cyclooctadiene)]4. Organometallics 2002. [DOI: 10.1021/om00069a034] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Goh LY, D'Aniello MJ, Slater S, Muetterties EL, Tavanaiepour I, Chang MI, Fredrich MF, Daz VW. Metal clusters in catalysis. 20. The chemistry of bis[.eta.5-cyclopentadienyl(tricarbonyl)chromium]. Inorg Chem 2002. [DOI: 10.1021/ic50191a040] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Gentle TM, Grassian VH, Klarup DG, Muetterties EL. Catalytic chemistry of palladium surfaces under ultrahigh-vacuum conditions. J Am Chem Soc 2002. [DOI: 10.1021/ja00360a063] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mocella MT, Rovner R, Muetterties EL. Mechanism of the olefin metathesis reaction. 4. Catalyst precursors in tungsten(VI) based systems. J Am Chem Soc 2002. [DOI: 10.1021/ja00431a080] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Tachikawa M, Muetterties EL. Metal clusters. 25. A uniquely bonded C-H group and reactivity of a low-coordinate carbidic carbon atom. J Am Chem Soc 2002. [DOI: 10.1021/ja00533a051] [Citation(s) in RCA: 105] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Muetterties EL, Meakin P, Hoffmann R. Barrier to rotation about the phosphorus-nitrogen bond in aminofluorophosphoranes. Relevance to rearrangements in five-coordinate compounds. J Am Chem Soc 2002. [DOI: 10.1021/ja00771a023] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Day VW, Fredrich MF, Reddy GS, Sivak AJ, Pretzer WR, Muetterties EL. Metal clusters in catalysis. 13. A new coordinately unsaturated cluster family, the per(phosphite) metal clusters. J Am Chem Soc 2002. [DOI: 10.1021/ja00466a074] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Schunn RA, Demitras GC, Choi HW, Muetterties EL. Methane formation in the reaction of carbon monoxide and hydrogen in the presence of iridium and osmium clusters. Inorg Chem 2002. [DOI: 10.1021/ic50225a092] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Muetterties EL. Solution state, nuclear magnetic resonance spectral features for tetrakis(N-methyl-N-(perfluorophenyl)dithiocarbamato)zirconium(IV). Inorg Chem 2002. [DOI: 10.1021/ic50134a054] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Burch RR, Muetterties EL, Day VW. Dehydrogenation of 1,3-cyclohexadiene by {HRh[P(OCHMe2)3]2}2. Preparation, dynamic NMR, and x-ray crystal structure of [.eta.3-CH2C6Me5]Rh[P(OCHMe2)3]2. Organometallics 2002. [DOI: 10.1021/om00061a030] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Oppegard AL, Smith WC, Muetterties EL, Engelhardt VA. The Chemistry of Sulfur Tetrafluoride.1 IV. Fluorination of Inorganic Oxides and Sulfides. J Am Chem Soc 2002. [DOI: 10.1021/ja01500a011] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Rakowski MC, Muetterties EL. Low valent cobalt triisopropyl phosphite complexes. Characterization of a catalyst for the hydrogenation of .alpha.,.beta.-unsaturated ketones. J Am Chem Soc 2002. [DOI: 10.1021/ja00445a013] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Miller NE, Miller HC, Muetterties EL. Chemistry of Boranes. XI. Diamine Derivatives of the Hypothetical B4H10-2 and B5H11-2 Ions. Inorg Chem 2002. [DOI: 10.1021/ic50016a019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Klemperer WG, Krieger JK, McCreary MD, Muetterties EL, Traficante DD, Whitesides GM. Dynamic nuclear magnetic resonance study of fluorine exchange in liquid sulfur tetrafluoride. J Am Chem Soc 2002. [DOI: 10.1021/ja00857a012] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Putnik CF, Welter JJ, Stucky GD, D'Aniello MJ, Sosinsky BA, Kirner JF, Muetterties EL. Metal clusters in catalysis. 15. A structural and chemical study of a dinuclear metal complex, hexacarbonylbis(.eta.3-2-propenyl)diiron(Fe-Fe). J Am Chem Soc 2002. [DOI: 10.1021/ja00481a020] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tachikawa M, Stein J, Muetterties EL, Teller RG, Beno MA, Gebert E, Williams JM. Metal clusters with exposed and low-coordinate nitride nitrogen atoms. J Am Chem Soc 2002. [DOI: 10.1021/ja00541a084] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zax DB, Bielecki A, Kulzick MA, Muetterties EL, Pines A. Zero-field NMR of solid bis-(.mu.-hydrido)decacarbonyltriosmium. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100278a021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Grassian VH, Muetterties EL. Vibrational electron energy loss spectroscopic study of benzene, toluene, and pyridine adsorbed on palladium(111) at 180 K. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100286a028] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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