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Guzei IA, Spencer LC, Buechel SC, Kaufmann LB, Czerwinski CJ. Intricacies of ligand coordination in tricarbonylchromium(0) complexes with ortho- and para-fluorobiphenyls. Acta Crystallogr C Struct Chem 2017; 73:638-644. [PMID: 28776516 PMCID: PMC5543399 DOI: 10.1107/s2053229617010774] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 07/21/2017] [Indexed: 11/10/2022] Open
Abstract
The steric and electronic factors that influence which of the two rings of a substituted biphenyl ligand coordinates to chromium are of interest and it has been suggested that haptotropic rearrangements within these molecules may be limited if the arene-arene dihedral angle is too large. Two tricarbonylchromium(0) complexes and their respective free ligands have been characterized by single-crystal X-ray diffraction. In the solid state, tricarbonyl[(1',2',3',4',5',6'-η)-2-fluoro-1,1'-biphenyl]chromium(0), [Cr(C12H9F)(CO)3], (I), exists as the more stable isomer with the nonhalogenated arene ring ligated to the metal center. Similarly, tricarbonyl[(1',2',3',4',5',6'-η)-4-fluoro-1,1'-biphenyl]chromium(0) crystallizes as the more stable isomer with the phenyl ring bonded to the Cr0 center. The arene-arene dihedral angles in these complexes are 55.77 (4) and 52.4 (5)°, respectively. Structural features of these complexes are compared to those of the DFT-optimized geometries of ten tricarbonyl[(η6-C6H5)(4-F-C6H4)]chromium model complexes. The solid-state structures of the free ligands 2-fluoro-1,1'-biphenyl and 4-fluoro-1,1'-biphenyl, both C12H9F, exhibit arene-arene dihedral angles of 54.83 (7) and 0.71 (8)°, respectively. The molecules of the free ligands occupy crystallographic twofold axes and exhibit positional disorder. Weak intermolecular C-H...F interactions are observed in all four structures.
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Affiliation(s)
- Ilia A. Guzei
- Chemistry, University of Wisconsin–Madison, 1101 University Ave., Madison, WI 53706, USA
- Research Institute of Chemistry, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklay St., Moscow 117198, Russian Federation
| | - Lara C. Spencer
- Chemistry, University of Wisconsin–Madison, 1101 University Ave., Madison, WI 53706, USA
| | - Sondra C. Buechel
- Department of Chemistry and Biochemistry, University of Wisconsin–La Crosse, 1725 State Street, La Crosse, WI 54601, USA
| | - Leah B. Kaufmann
- Department of Chemistry and Biochemistry, University of Wisconsin–La Crosse, 1725 State Street, La Crosse, WI 54601, USA
| | - Curtis J. Czerwinski
- Department of Chemistry and Biochemistry, University of Wisconsin–La Crosse, 1725 State Street, La Crosse, WI 54601, USA
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Brydges S, Gildea B, Grealis JP, Müller-Bunz H, Stradiotto M, Casey M, McGlinchey MJ. Organic and organometallic derivatives of pentaphenylbenzene, C6Ph5X: correlation of peripheral phenyl ring orientations with the steric bulk of “X”. CAN J CHEM 2013. [DOI: 10.1139/cjc-2013-0257] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A series of C6Ph5X compounds, including X = H, Br, CO2H, CO2R, C[Formula: see text]CPh, cis-BrC=C(Br)Ph, 2-bornenyl, and ferrocenyl, have been characterized by use of X-ray crystallography. Also, the first organometallic complexes of pentaphenylbenzene have been prepared by reaction with chromium hexacarbonyl to yield (η6-C6Ph5H)Cr(CO)3 complexes in which the metal tripod is attached either to an ortho peripheral ring or to the central ring. Crystalline pentaphenylbenzoic acid exists as a hydrogen-bonded dimer; however, the steric bulk of the substituents does not allow the carboxylic acid moieties to be linked directly but instead via two bridging methanol molecules. In the solid state, the orientation of the peripheral rings in bulky C6Ph5X systems is very sensitive to the size of the “X” substituents, such that the twist angle of the para ring responds inversely with increasing bulk of “X”, which drives the ortho rings farther out of the plane of the central ring. The relevance of these observations to correlated motion in molecular propellers, and ultimately to molecular machines, is discussed.
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Affiliation(s)
- Stacey Brydges
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Brendan Gildea
- School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - John P. Grealis
- School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Helge Müller-Bunz
- School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Mark Stradiotto
- Department of Chemistry, Dalhousie University, Halifax, NS B3H 4J3, Canada
| | - Michael Casey
- School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Michael J. McGlinchey
- School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
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Nikitin K, Bothe C, Müller-Bunz H, Ortin Y, McGlinchey MJ. High and Low Rotational Barriers in Metal Tricarbonyl Complexes of 2- and 3-Indenyl Anthracenes and Triptycenes: Rational Design of Molecular Brakes. Organometallics 2012. [DOI: 10.1021/om300512z] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kirill Nikitin
- School of Chemistry & Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Cornelia Bothe
- School of Chemistry & Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Helge Müller-Bunz
- School of Chemistry & Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Yannick Ortin
- School of Chemistry & Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Michael J. McGlinchey
- School of Chemistry & Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
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Krieck S, Görls H, Yu L, Reiher M, Westerhausen M. Stable “Inverse” Sandwich Complex with Unprecedented Organocalcium(I): Crystal Structures of [(thf)2Mg(Br)-C6H2-2,4,6-Ph3] and [(thf)3Ca{μ-C6H3-1,3,5-Ph3}Ca(thf)3]. J Am Chem Soc 2009; 131:2977-85. [PMID: 19193100 DOI: 10.1021/ja808524y] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sven Krieck
- Institute of Inorganic and Analytical Chemistry, Friedrich-Schiller-Universität Jena, August-Bebel-Strasse 2, D-07743 Jena, Germany, and Laboratorium für Physikalische Chemie, ETH Zurich, Hönggerberg Campus, Wolfgang-Pauli-Strasse 10, CH-8093 Zurich, Switzerland
| | - Helmar Görls
- Institute of Inorganic and Analytical Chemistry, Friedrich-Schiller-Universität Jena, August-Bebel-Strasse 2, D-07743 Jena, Germany, and Laboratorium für Physikalische Chemie, ETH Zurich, Hönggerberg Campus, Wolfgang-Pauli-Strasse 10, CH-8093 Zurich, Switzerland
| | - Lian Yu
- Institute of Inorganic and Analytical Chemistry, Friedrich-Schiller-Universität Jena, August-Bebel-Strasse 2, D-07743 Jena, Germany, and Laboratorium für Physikalische Chemie, ETH Zurich, Hönggerberg Campus, Wolfgang-Pauli-Strasse 10, CH-8093 Zurich, Switzerland
| | - Markus Reiher
- Institute of Inorganic and Analytical Chemistry, Friedrich-Schiller-Universität Jena, August-Bebel-Strasse 2, D-07743 Jena, Germany, and Laboratorium für Physikalische Chemie, ETH Zurich, Hönggerberg Campus, Wolfgang-Pauli-Strasse 10, CH-8093 Zurich, Switzerland
| | - Matthias Westerhausen
- Institute of Inorganic and Analytical Chemistry, Friedrich-Schiller-Universität Jena, August-Bebel-Strasse 2, D-07743 Jena, Germany, and Laboratorium für Physikalische Chemie, ETH Zurich, Hönggerberg Campus, Wolfgang-Pauli-Strasse 10, CH-8093 Zurich, Switzerland
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Affiliation(s)
- Gregg S Kottas
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, USA
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Synthesis, electrochemistry, and crystal and molecular structures of some molybdenum(0) arene derivatives with fluorinated and phenyl-substituted arene ligands. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.02.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Harrington LE, Britten JF, McGlinchey MJ. Ferrocenyl-penta-(β-naphthyl)benzene Synthesis, structure, and dynamic behaviour. CAN J CHEM 2003. [DOI: 10.1139/v03-104] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
3-Ferrocenyl-2,4,5-tri-(β-naphthyl)cyclopentadienone undergoes a DielsAlder reaction with di-(β-naphthyl) acetylene to yield, after elimination of carbon monoxide, ferrocenyl-penta-(β-naphthyl)benzene (4). 1H and 13C variable-temperature NMR studies on 4 reveal the existence of multiple diastereoisomers at low temperature. These data are interpreted in terms of slowed rotation of the naphthyl groups, and are supported by the X-ray crystal structure of 4, which exhibits disorder at three of the naphthyl sites.Key words: sterically crowded molecules, hindered rotations, crystallography, NMR.
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Gupta HK, Reginato N, Ogini FO, Brydges S, McGlinchey MJ. SiCl4ethanol as a trimerization agent for organometallics: convenient syntheses of the symmetrically substituted arenes 1,3,5-C6H3R3 where R = (C5H4)Mn(CO)3 and (C5H4)Fe(C5H5). CAN J CHEM 2002. [DOI: 10.1139/v02-152] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Trimerization of acetylferrocene and of (acetylcyclopentadienyl)tricarbonyl-manganese proceeds efficiently in the presence of ethanol and tetrachlorosilane. The resulting 1,3,5-trisubstituted benzenes have been characterized by X-ray crystallography and compared with the structure of (1,3,5-triphenylbenzene)tris(tricarbonylchromium). The efficacy of EtOHSiCl4 as a combined reagent for the trimerization of polycyclic ketones is also discussed. Finally, the synthesis and structure of [CpMn(CO)2]2(µ-C=CHPr), derived from the reaction of cymantrene with butyllithium and phenylacetyl chloride at room temperature, is described.Key words: ketone, condensation, cyclization, organometallics, arenes.
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McGlinchey MJ. 2000 Alcan Award Lecture Adventures in organometallic NMR: steric restraints, slowed rotations, and skeletal rearrangements. CAN J CHEM 2001. [DOI: 10.1139/v01-117] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The structures and NMR fluxionality of a wide variety of organometallic complexes (including tetrahedral cluster cations and systems of the type (CnRn)ML3, where R = Et, Ph) are discussed. Barriers to tripodal and peripheral substituent rotations are reported, and the relevance of correlated rotations to molecular machines is outlined. Haptotropic shifts in (cyclopenta[def]phenanthrenyl)MLn and (cyclopenta[l]phenanthrenyl)MLn complexes are rationalized in terms of the aromatic character of the transition states. Likewise, the barriers to silatropic shifts in polyindenylsilanes can be correlated with the aromaticity of the intermediate isoindenes. Finally, the use of cobalt clusters to control cyclohexane ring conformations is described.Key words: NMR ring currents, fluxionality, correlated rotations, molecular rearrangements, haptotropic shifts.
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Catellani M, Baroni F, Bocelli G, Ghelli S. Double metallation of a molecular tweezers with chromium and visible light-induced metal transfer into the cavity. J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(99)00115-1] [Citation(s) in RCA: 2] [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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Gupta HK, Brydges S, McGlinchey MJ. Diels−Alder Reactions of 3-Ferrocenyl-2,4,5-triphenylcyclopentadienone: Syntheses and Structures of the Sterically Crowded Systems C6Ph5Fc, C7Ph6FcH, and [C7Ph6FcH][SbCl6]. Organometallics 1998. [DOI: 10.1021/om980645w] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hari K. Gupta
- Department of Chemistry, McMaster University, Hamilton, Ontario, Canada L8S 4M1
| | - Stacey Brydges
- Department of Chemistry, McMaster University, Hamilton, Ontario, Canada L8S 4M1
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Tunik S, Shipil' P, Vlasov A, Denisov V, Nikols'kii A, Dolgushin F, Yanovsky A, Struchkov Y. Reactions of (η6-diphenylacetylene) chromiumtricarbonyl complexes with polynuclear carbonyls. III. Reactions of M4(CO)12 (M = Rh, Co) clusters with Cr(CO)3(η6-PhC2Ph). Crystal and molecular structure of the Rh4(CO)9(μ5,η6:η6-PhC2Ph)Cr(CO)3 cluster. J Organomet Chem 1996. [DOI: 10.1016/0022-328x(95)06077-a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Tunik S, Vlasov A, Nikol'skii A, Starova G, Ooi S, Nakai H, Sato T. Reactions of (η6-diphenylacetylene) chromiumtricarbonyl complexes with polynuclear carbonyls I. Synthesis of Cr(CO)3(η6-diphenylacetylene) complex and its reaction with Co2(CO)8. Crystal and molecular structure of Cr(CO)3(η6:η2-diphenylacetylene)Co2(CO)6. J Organomet Chem 1994. [DOI: 10.1016/0022-328x(94)87011-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Abd-El-Aziz AS, Schriemer DC. The synthesis of new di(cyclopentadienyliron) complexes of polyaromatic ethers. Inorganica Chim Acta 1992. [DOI: 10.1016/s0020-1693(00)86826-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Mailvaganam B, Sayer BG, McGlinchey MJ. The fluxional behaviour of hexaphenylbenzene chromium tricarbonyl: A variable-temperature 13C NMR spectroscopic study. J Organomet Chem 1990. [DOI: 10.1016/0022-328x(90)85275-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Marr G, Rockett BW. Organic reactions of selected π-complexes Annual survey covering the year 1987. J Organomet Chem 1988. [DOI: 10.1016/0022-328x(88)80469-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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