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Baillie RA, Holmes AS, Lefèvre GP, Patrick BO, Shree MV, Wakeham RJ, Legzdins P, Rosenfeld DC. Synthesis, Characterization, and Some Properties of Cp*W(NO)(H)(η(3)-allyl) Complexes. Inorg Chem 2015; 54:5915-29. [PMID: 26000552 DOI: 10.1021/acs.inorgchem.5b00747] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Sequential treatment at low temperatures of Cp*W(NO)Cl2 in THF with 1 equiv of a binary magnesium allyl reagent, followed by an excess of LiBH4, affords three new Cp*W(NO)(H)(η(3)-allyl) complexes, namely, Cp*W(NO)(H)(η(3)-CH2CHCMe2) (1), Cp*W(NO)(H)(η(3)-CH2CHCHPh) (2), and Cp*W(NO)(H)(η(3)-CH2CHCHMe) (3). Complexes 1-3 are isolable as air-stable, analytically pure yellow solids in good to moderate yields by chromatography or fractional crystallization. In solutions, complex 1 exists as two coordination isomers in an 83:17 ratio differing with respect to the endo/exo orientation of the allyl ligand. In contrast, complexes 2 and 3 each exist as four coordination isomers, all differing by the orientation of their allyl ligands which can have either an endo or an exo orientation with the phenyl or methyl groups being either proximal or distal to the nitrosyl ligand. A DFT computational analysis using the major isomer of Cp*W(NO)(H)(η(3)-CH2CHCHMe) (3a) as the model complex has revealed that its lowest-energy thermal-decomposition pathway involves the intramolecular isomerization of 3a to the 16e η(2)-alkene complex, Cp*W(NO)(η(2)-CH2═CHCH2Me). Such η(2)-alkene complexes are isolable as their 18e PMe3 adducts when compounds 1-3 are thermolyzed in neat PMe3, the other organometallic products formed during these thermolyses being Cp*W(NO)(PMe3)2 (5) and, occasionally, Cp*W(NO)(H)(η(1)-allyl)(PMe3). All new complexes have been characterized by conventional spectroscopic and analytical methods, and the solid-state molecular structures of most of them have been established by single-crystal X-ray crystallographic analyses.
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Affiliation(s)
- Rhett A Baillie
- †Department of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Aaron S Holmes
- †Department of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Guillaume P Lefèvre
- †Department of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Brian O Patrick
- †Department of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Monica V Shree
- †Department of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Russell J Wakeham
- †Department of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Peter Legzdins
- †Department of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Devon C Rosenfeld
- ‡The Dow Chemical Company, 2301 North Brazosport Boulevard, Freeport, Texas 77541, United States
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7
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Blake AJ, George MW, Hall MB, McMaster J, Portius P, Sun XZ, Towrie M, Webster CE, Wilson C, Zarić SD. Probing the Mechanism of Carbon−Hydrogen Bond Activation by Photochemically Generated Hydridotris(pyrazolyl)borato Carbonyl Rhodium Complexes: New Experimental and Theoretical Investigations. Organometallics 2007. [DOI: 10.1021/om7008217] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexander J. Blake
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, U.K., Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, Central Laser Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, U.K., Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152-3550, and Department of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 158, 11001 Belgrade, Serbia
| | - Michael W. George
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, U.K., Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, Central Laser Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, U.K., Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152-3550, and Department of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 158, 11001 Belgrade, Serbia
| | - Michael B. Hall
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, U.K., Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, Central Laser Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, U.K., Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152-3550, and Department of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 158, 11001 Belgrade, Serbia
| | - Jonathan McMaster
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, U.K., Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, Central Laser Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, U.K., Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152-3550, and Department of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 158, 11001 Belgrade, Serbia
| | - Peter Portius
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, U.K., Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, Central Laser Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, U.K., Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152-3550, and Department of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 158, 11001 Belgrade, Serbia
| | - Xue Z. Sun
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, U.K., Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, Central Laser Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, U.K., Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152-3550, and Department of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 158, 11001 Belgrade, Serbia
| | - Michael Towrie
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, U.K., Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, Central Laser Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, U.K., Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152-3550, and Department of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 158, 11001 Belgrade, Serbia
| | - Charles Edwin Webster
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, U.K., Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, Central Laser Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, U.K., Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152-3550, and Department of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 158, 11001 Belgrade, Serbia
| | - Claire Wilson
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, U.K., Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, Central Laser Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, U.K., Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152-3550, and Department of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 158, 11001 Belgrade, Serbia
| | - Snežana D. Zarić
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, U.K., Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, Central Laser Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, U.K., Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152-3550, and Department of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 158, 11001 Belgrade, Serbia
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