University of Victoria, Chemistry Department
  

    P.O. Box 3065
    Victoria, B.C., Canada
    V8W 3V6

Dr. Reginald H. Mitchell

Professor Emeritus

Ph.D. 1968, University of Cambridge, England 

Phone Home (250) 598-7679
Fax (250) 721-7147 
email: regmitch@uvic.ca

Dr Mitchell is now retired and so will only be accepting  new students jointly with either Dr David Berg, or Dr Natia Frank.

 Reg's Picture
 
Recent papers of R. H. Mitchell

128.    Marsella, M. J.,  Wang, Z. Q., Mitchell, R. H. 2000, Backbone Photochromic Polymers Containing the Dimethyldihydropyrene Moiety: Toward Optoelectronic Switches.  Org. Lett., 2, 2979-2982.
129.    Mitchell, R.H., Ward, T.R., Wang, Y.  2001,  [2.2] Metacyclophanedienes With Furan Bridges, Heterocycles, 54, 249-257.
130.    Mitchell, R. H.; Ward, T. R.   2001, The synthesis of benz-, napth-, and anth-annelated dihydropyrenes as aids to measuring aromaticity by NMR.   Tetrahedron, 57, 3689-3695.
131.     Mitchell, R. H.   2001,  Measuring aromaticity by NMR.  Chem. Rev., 101, 1301-1315.
132.    Kimball, D. B.; Haley, M. M.; Mitchell, R. H.; Ward, T. R.  2001, Dehydrobenzoannulene-Dimethyldihydropyrene hybrids: Model systems for the synthesis of molecular aromatic probes.   Org. Lett., 3, 1709-1711.
133.    Laali, K. K.; Okazaki, T.; Mitchell, R. H.   2001, Generation and NMR studies of stable cations derived from  monothia[3.2]- and dithia[3.3]-metacyclophanes.    J. Chem. Soc., Perkin Trans. 2, 745 - 748.
134.    Laali, K. K.; Okazaki, T.; Mitchell, R.H.; Ward, T. R.  2001, Novel Annulene Dications from Methylated [2.2]Metacyclophane Monoenes and [e]-Ring Benzannelated Dimethyldihydropyrene, J. Org. Chem., 66, 5329-5332.
135.    Mitchell, R. H.  2002,  Conformational Changes of 2,11-Dithia[3.3]metacyclophane.   A New Look Using VT NMR and Calculation,  J. Am. Chem. Soc., 124, 2352-2357.
136.    Yunker, M. B.; Macdonald, R. W.; Vingarzan, R.; Mitchell, R. H.; Goyette, D.; Sylvestre, S.  2002,   PAH’s in the Fraser River Basin: a critical appraisal of PAH ratios as indicators of PAH source and composition.  Org. Geochem., 33, 489-515.
137.    Sheepwash, M. L.; Mitchell, R. H.; Bohne, C.   2002,  Mechanistic Insights into the Photochromism of trans-10b,10c-dimethyl-10b,10c-dihydropyrene Derivatives, J.  Am. Chem.  Soc. 124, 4693-4700.
138.    Mitchell, R. H.; Brkic, Z.; Berg, D. J.; Barclay, T. M.   2002  Effective Aromaticity of Tricarbonylchromiumbenzene, about 25% Enhanced over that of Benzene: Structural Evidence from a Complexed Benzannulene,
139.    Williams, R.V.; Armantrout, J. R.; Twamley, B.; Mitchell, R. H.; Ward, T. R.; Bandyopadhyay, S.  2002  A Theoretical and Experimental Scale of Aromaticity. The First Nucleus-Independant Chemical Shifts (NICS) Study of the Dimethyldihydropyrene Nucleus,  J. Am. Chem. Soc., 124, 13495-13505.
140.    Kimball, D. V.; Haley, M. M.; Mitchell, R. H.; Ward, T. R.; Bandyopadhyay, S.; Williams, R. V.; Armantrout, J. R.  2002  Dimethyldihydropyrene-Dehydrobenzoannulene Hybrids: Studies in Aromaticity and Photoisomerization,  J. Org. Chem., 67, 8798-8811.
141.    Sheepwash, M. A. L.; Ward, T. R.; Wang, Y.; Bandyopadhyay, S.; Mitchell, R. H.; Bohne, C.  2002  Mechanistic Studies on the Photochromism of [e]-annelated dimethyldihydropyrenes,  Photochemical and Photobiological Sciences, 2, 104-112.
142.    Mitchell, R.H.; Ward, T. R.; Chen, Y.; Wang, Y.; Weerawarna, S. A.; Dibble, P. W.; Marsalla, M. J.; Almutairi, A.; Wang, Z. Q. 2003 The synthesis and photochromic properties of molecules containing [e]-annelated dihydropyrenes.     Two and three way pi-switches based on the dimethyldihydropyrene-metacyclophanediene valence isomerization.  J. Am. Chem. Soc. 125, 2974-2988.
143.    Mitchell, R. H.; Brkic, Z.; Sauro, V. A.; Berg, D. J. 2003, A Photochromic, Electrochromic, Thermochromic Ru Complexed Benzannulene: An Organometallic Example of the Dimethyldihydropyrene-Metacyclophanediene Valence Isomerization., J. Am. Chem. Soc. 125, 7581-7585.
144.     Mitchell, R. H.; Fan, W.; Lau, D. Y. K.; Berg, D. J.   2004,  An Annulene-Fused Cyclopentadienide. A Photochromic Cyclopentadieno-dimethyldihydropyrene Where the Fused Cyclopentadienide Group Resembles Benzene in Its Effect on the Dihydropyrene-Metacyclophanediene Valence Isomerization.   J. Org. Chem.; 69, 549-554.
145.    Lidell, P. A.; Kodis, G.; Andreasson, J.; de la Garza, L.; Bandyopadhyay, S.; Mitchell, R. H.; Moore, T. A.; Moore, A. L.; Gust, D.  2004, Photonic Switching of Photoinduced Electron Transfer in a Dihydropyrene-Porphyrin-Fullerene Molecular Triad.  J. Am.  Chem.  Soc. 126, 4803-4811.
146.    Mitchell, R. H.; Bandyopadhyay, S.   2004, Linked Photoswitches Where Both Photochromes Open and Close, Org. Lett. 6, 1729-1732.
147.    Adreasson, J.; Kodis, G.; Terazono, Y.; Liddell, P. A.; Bandyopadhyay, S.; Mitchell, R. H.; Moore, T. A.; Moore, A. L.; Gust, D.  2004, Molecule-Based Photonically Switched Half-Adder,  J. Am. Chem. Soc. 126, 15926-15927.
148.    Mitchell, R. H.; Blunden, R.; Hollet, G.; Bandyopadhyay, S.; Williams, R. V.; Twamley, B.  2005,  13-Methyl-2,6-dithia[7]meta-cyclophane: A Useful Molecule to Connect VT NMR Results and Structure with Calculations, J. Org. Chem.  70, 675-680.
149    Williams, R. V.; Edwards, W. D.; Mitchell, R. H.; Robinson, S. G.  2005, A DFT Study of the Thermal, Orbital Symmetry Forbidden, Cyclophanediene to Dihydropyrene Electrocyclic Reaction.  Predictions to Improve the Dimethyldihydropyrene Photoswitches.  J. Am. Chem. Soc. 127, 16207-16214.
150    Mitchell, R. H.; Zhang, R.; Fan, W.; Berg, D.J. 2005, Measuring Antiaromaticity - Synthesis of a Cyclopentadienone Fused Dihydropyrene - Analysis of Ring Current Changes  J. Am. Chem. Soc. 127, 16251-16254.
151    Mitchell, R. H.; Bohne, C.; Wang, Y. Bandyopadhyay, S.; Wozniak, C. B.  2006,  Multi-State Pi-Switches: Synthesis and Photochemistry of a Molecule Containing Three Switchable Annelated Dihydropyrene Units.   J. Org. Chem. 71, 327-336.
152    Sawada, T.; Chifuku, K.; Kuwahara, Y.; Shosenji, H.; Mitchell,  R. H. 2006  Crystal Structure of 2,7-Di-tert-butyl-10,11-diethoxycarbonyl-trans-9,12-epoxy-12b,12c-dimethyldihydrobenzo-[e]pyrene Analytical Sciences: X-ray Structure Analysis Online, 22, 195-6.
153    Andréasson, J.; Straight, S. D.; Bandyopadhyay, S.; Mitchell, R. H.; Moore, T. A.; Moore, A. L.; Gust, D. 2007  Molecular 2:1 Digital Multiplexer, Angew Chemie, Int. Ed. Engl. 46, 958-961.
154    Zhang, R.; Fan, W.; Twamley, B.; Berg, D. J.; Mitchell, R. H.  2007  Synthesis and Structures of Dimethyldihydropyrene Iron Carbonyl Complexes,  Organometallics, 26, 1888-1894.
155    Lee, H-W.; Robinson, S. G.; Bandyopadhyay, S.; Mitchell, R. H.; Sen, D.  2007  Reversible Photo-regulation of a Hammerhead Ribozyme using a Diffusible Effector, J. Mol. Biol.  371 1163-1173.
156    Fan, W.; Berg, D. J.; Mitchell, R. H.; Barclay, T. M.  2007  Divalent Ytterbium and Iron Metallocenes of a Dimethyldihydropyrene fused Cyclopentadienyl.   Organometallics, 26, 4562-4567.
157    Mitchell, R. H.; Bohne, C.; Robinson, S. G.; Yang, Y.  2007  The Effect of addition of Fluorescent Moieties to Dihydropyrenes: Enhancing the Photochromicity and Fluorescence Monitoring.  J. Org. Chem.  72, 7939-7946.
158    Andréasson, J.; Straight, S. D.; Bandyopadhyay, S.; Mitchell, R. H.; Moore, T. A.; Moore, A. L.;  Gust, D.  2007  A Molecule-Based 1:2 Digital Demultiplexer, J. Phys. Chem. C  111, 14274-14278.
159    Ayub, K.; Zhang, R.; Robinson, S. G.; Twamley, B.; Williams, R. V.; Mitchell, R. H.  2008  Suppressing the Thermal Metacyclophanediene to Dihydropyrene Isomerization - Synthesis and Rearrangement of  8,16-Dicyano[2.2]metacyclophane-1,9-diene and Evidence Supporting the Proposed Biradicaloid Mechanism,  J. Org. Chem.  73, 451-456
160    Laali, K. K.; Okazaki, T.; Mitchell, R. H.; Ayub, K.; Zhang, R.; Robinson, S. G.  2008 Stable Ion NMR and GIAO-DFT Study of Novel Cations from 8,16-Dicyano[2.2]-metacyclophanedienes and from Strategically Substituted/Benzannelated Dihydropyrenes: Charge-Induced Tropicity Modulation and p-Switching,  J. Org. Chem.  73, 457-466.
161    Mitchell, R. H.; Zhang, R.; Berg, D. J.; Twamley, B.; Williams, R. V.  2009, Measuring Aromaticity with the Dimethyldihydropyrene Ring Current Probe. Experimental and Computational Studies of the Fulvenes and the Strongly Antiaromatic Cyclopentadienone Reveal Large Mills-Nixon-Type Bond Localization Effects. Synthesis of Fulvene-Fused Dihydropyrenes, J. Am. Chem. Soc. 131, 189-199.
162    Robinson, S. G.; Sauro, V. A.; Mitchell, R. H.  2009, Oligothiophene Functionalized Dimethyldihydropyrenes -I.  Syntheses and Photochromicity, J. Org. Chem. 74, 6592-6605.
163    Robinson, S. G.; Lonergan, M. C.; Mitchell, R. H.  2009, Oligothiophene Functionalized Dimethyldihydropyrenes II.  Electrochemical and Conductive Properties, J. Org. Chem. 74, 6606-6614.


Books, Chapters, Monographs
1.    Mitchell, R.H.  "Nuclear Magnetic Resonance Properties and Conformational Behaviour of Cyclophanes", Chapter 4 of "Cyclophanes" Edited by P. Keehn and S. Rosenfeld, Academic Press, 1983, 239-310.

2.    Mitchell, R.H., Dihydropyrenes.  Bridged [14]annulenes par excellence.  A comparison with other bridged annulenes, published in "Advances in Theoretically Interesting Molecules", Volume 1, edited by R.P. Thummel, JAI Press, 1989, 135-199.

3.    Mitchell, R.H., Mitchell, H.J., Selenium and Tellurium containing rings of seven and greater atoms, Chapter 9.33 in Comprehensive Hetreocyclic Chemistry, 2nd Edn,  Pergamon Press, C.W. Rees, A.R. Katritzky, E.F.V. Scriven, Editors, 1996, 925-946.


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