339 W Boyd St. Suite 319
Norman, OK 73019
(405) 325-1701
Recent Publications
2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
2009
Z. N. Zahran, N. Xu, D. R. Powell, and G. B. Richter-Addo, Bis(1-methyl-1-H-imidazole-κN3) [N,N’-o-phenyl-enebis(pyridine-2-carboxamido)-κ4N]manganese(II). Acta Cryst., 2009, E65, m75. doi: 10.1107/S1600536808041640
N. Xu, A. Campbell, D. R. Powell, J. Khandogin, and G. B. Richter-Addo, A stable hyponitrite iron porphyrin. J. Am. Chem. Soc., 2009, 131, 2460-2461. doi: 10.1021/ja809781r
2008
A. B. S. Curtiss, G. T. Musie, and D. R. Powell, Bis(tetramethylammonium) tetrachlorozincate(II), Phase VI. Acta Cryst., 2008, E, m183. doi: 10.1107/S1600536807065828
A. B. S. Curtiss, M. Bera, G. T. Musie, and D. R. Powell, Synthesis and characterization of mono- and μ6-sulfato hexanuclear zinc complexes of a new symmetric dinucleating ligand. Dalton Trans., 2008, 2717-2724. doi: 10.1039/b719646f
C. Burba, N. Rocher, R. Frech, and D. Powell, Cation-anion interaction in 1-ethyl-3-methylimidazolium trifluoromethanesulfonate-based ionic liquid electrolytes. J. Phys. Chem. B, 2008, 112, 2991-2995. doi: 10.1021/jp076577l
M. Bera, G. T. Musie, and D. R. Powell, Zinc(II) mediated cyclization and complexation of an unsymmetrical dicarboxyamine ligand: synthesis, spectral and crystal structures characterizations. Inorg. Chem. Comm., 2008, 11, 293-299. doi: 10.1021/jp076577l
X. Li, M. Bera, G. T. Musie, and D. R. Powell, Copper(II) promoted imidazolidine ring formation and complexation: A unique reaction course. Inorg. Chim. Acta, 2008, 361, 1965-1972. doi: 10.1016/j.ica.2007.10.005
A. B. S. Curtiss, M. Bera, G. T. Musie, and D. R. Powell, Synthesis and characterization of mono- and μ6-sulfato hexanuclear zinc complexes of a new symmetric dinucleating ligand. Dalton Trans., 2008, 2717-2724. doi: 10.1039/b719646f
M. Bera, A. B. S. Curtiss, G. T. Musie, D. R. Powell, A new self-assembled μ 6-sulfato hexanulcear cobalt(II) complex of a symmetric dinucleating ligand: synthesis and x-ray structural analysis. Inorg. Chem. Comm., 2008, 11, 1033-1036. doi: 10.1016/j.inoche.2008.05.029
G. L. N. Smith, Y. Lei, D. R. Powell, and R. W. Taylor, 6,7,9,10-Tetrahydro-16,22-ethanooxy-ethano-5,8,11,19-tetraoxa-16,22-diazadibenzo[h,q]cyclooctadecine-17,21-dione: a benzylannelated macrobicyclic diamide. Acta Cryst., 2008, E64, o2003. doi: 10.1107/S1600536808030067
N. Xu, D. R. Powell, and G. B. Richter-Addo, (2,3,7,8,12,13,17,18-Octaethylporphinato)(trifluoromethanesulfonato)iron(III). Acta Cryst., 2008, E64, m1366. doi: 10.1107/S1600536808031504
S. M. Carter, N. Xu, M. A. Khan, D. R. Powell, and G. B. Richter-Addo, (Nitrato-κO)oxido(5,10,15,20-tetraphenylporphyrinato-κ4N)molybdenum(V) benzene solvate. Acta Cryst., 2008, E64, m1337. doi: 10.1107/S1600536808030705
L. Zhou and Kenneth M. Nicholas, Imidazole substituent effects on oxidative reactivity of tripodal(imid)2(thioether)CuI complexes. Inorg. Chem., 2008, 47, 4356-4367. doi: 10.1021/ic800007t
2007
V. A. Soloshonok and H. Ueki, Design, synthesis, and characterization of binuclear Ni(II) complexes with inherent helical chirality. J. Am. Chem. Soc., 2007, 129, 2426-2427. doi: 10.1021/ja0671215
V. A. Soloshonok, H. Ueki, J. L. Moore, T. K. Ellis, Design and synthesis of molecules with switchable chirality via formation and cleavage of metal-ligand coordination bonds. J. Am. Chem. Soc., 2007, 129, 3512-3513. doi: 10.1021/ja067995r
L. Yang, D. R. Powell, and R. P. Houser, Structural variation in copper(I) complexes with pyridylmethylamide ligands: structural analysis with a new four-coordinate geometry index Ï„4. Dalton Trans., 2007, 955-964. doi: 10.1039/b617136b
G. L. N. Smith, N. M. Rocher, D. R. Powell, and R. W. Taylor, 6,7,9,10,17,18,20,21,28,29,31,32,39,40,42,43-hexadecahydro-16,44:22,38-di(ethanooxyethano)-5,8,11,19,27,30,33,41-octaoxa-16,22,38,44-tetraazatetrabenzo[h,q,z,i1]cyclohexatriacontine: A benzoannelated tricyclic cryptand. Acta Crystallog. E, 2007, o1253-o1255. doi: 10.1107/S160053680700640x
L. Zhou, D. Powell, and K. M. Nicholas, Copper(I) complexes of tripodal tris(imidazolyl) ligands: potential mimics of the Cu(A) site of hydroxylase enzymes. Inorg. Chem., 2007, 46, 2316-2321. doi: 10.1021/ic061985
G. L. N. Smith, D. R. Powell, M. A. Khan, and R. W. Taylor, Three related benzoannelated diaxapolyether macrocycles: effects of macrocycle ring size and position of benzo groups on hydrogen bonding of the amine protons. Acta Cryst., 2007, C63, o378-o381. doi: 10.1107/S0108270107022160
J. D. Young, M. A. Khan, D. R. Powell, and R. J. Wehmschulte, m-Terphenylaluminum and -gallium compounds: synthesis and conversion into low-coordinate organogallium cations. Eur. J. of Inorg. Chem., 2007, 12, 1671-1681. doi: 10.1002/ejic.200601049
U. Pal Chaudhuri, L. R. Whiteaker, A. Mondal, E. L. Klein, D. R. Powell, and R. P. Houser, Substituted pyridylmethylamide ligands and their zinc complexes. Inorg. Chim. Acta, 2007, 360, 3610-3618. doi: 10.1016/j.ica.2007.05.003
L. Yang, D. R. Powell, E. L. Klein, A. Grohmann, and R. P. Houser, Delocalized mixed-valence bi- and trinuclear complexes with short Cu-Cu bonds. Inorg. Chem., 2007, 46, 6831-6833. doi: 10.1021/ic7010474
L. Zhou, D. Powell, K. M. Nicholas, Tripodal bis(imidazole) thioether copper(I) complexes: mimics of the CuM site of copper hydroxylase enzymes. Inorg. Chem., 2007, 46, 7789-7799. doi: 10.1021/ic700447k
R. A. Adrian, S. Zhu, G. A. Broker, E. R. T. Tiekink, D. R. Powell, and J. A. Walmsley, Dinuclear palladium(II) complexes with bridging acetamide ligands. Dalton Trans., 2007, 4399-4404. doi: 10.1039/b707878a
U. Pal Chaudhuri, L. Yang, L. R. Whiteaker, A. Mondal, M. R. Fultz, D. R. Powell, and R. P. Houser, Neutral pyridylmethylamide ligands and their mononuclear copper(II) complexes. Polyhedron, 2007, 26, 5420-5431. doi: 10.1016/j.poly.2007.08.004
2006
S. M. Carter, J. Lee, C. A. Hixson, D. R. Powell, R. A. Wheeler, M. J. Shaw, and G. Richter-Addo, Fiber-optic infrared reflectance spectroelectrochemical studies of osmium and ruthenium nitrosyl porphyrins containing alkoxide and thiolate ligands. Dalton Trans., 2006, 1338-1346. doi: 10.1039/b510717b
Z. N. Zahran, M. J. Shaw, M. A. Khan, and G. B. Richter-Addo, Fiber-Optic Infrared Spectroelectrochemical Studies of Six-Coordinate Manganese Nitrosyl Porphyrins in Nonaqueous Media. Inorg. Chem., 2006, 45, 2661-2668. doi: 10.1021/ic051190n
A. A. Diaz, J. D. Young, M. A. Khan, R. J. Wehmschulte, Facile synthesis of unsymmetrical 9-phospha- and 9-arsafluorenes. Inorg. Chem., 2006, 45, 5568-5575. doi: 10.1021/ic051976l
N. Xu, D. R. Powell, L. Cheng, and G. B. Richter-Addo, The first structurally characterized nitrosyl heme model complex. Chem. Comm., 2006, 2030-2032. doi: 10.1039/b602611g
L. Zhou, D. Powell, and K. M. Nicholas, Tripodal bis(imidazole)-thioether copper(I) complexes: mimics of the Cu(B) site of hydroxylase enzymes. Inorg. Chem., 2006, 45, 3840-3842. doi: 10.1021/ic052121b
L. R. Whiteaker, U. Pal Chaudhuri, D. R. Powell, and R. P. Houser, 2-Phynyl-N-(2-pyridylmethyl)acetamide. Acta Cryst., 2006, E62, o3337-o3338. doi: 10.1107/S1600536806026092
L. R. Whiteaker, U. Pal Chaudhuri, D. R. Powell, and R. P. Houser, 2,2,2-Triphenyl-N-(2-pyridylmethyl)acetamide. Acta Cryst., 2006, E62, o3339-o3340. doi: 10.1107/S1600536806026092
Z. N. Zahran, D. R. Powell, and G. B. Richter-Addo, Synthesis, molecular structure, and redox behavior of an oxo-bridged dimer of a ruthenium-bpb nitrosyl. Inorg. Chim. Acta, 2006, 359, 3084-3088. doi: 10.1016/j.ica.2006.02.013
N. M. Rocher, R. Frech, and D. R. Powell, Crystalline and solution phases of N,N-dimethylenediamine complexed with lithium triflate and sodium triflate: intramolecular and intermolecular hydrogen bonding. J. Phys. Chem. B, 2006, 110, 15117-15126. doi: 10.1021/jp061143w
G. L. Smith, S. S. Alguindigue, M. A. Khan, D. R. Powell, and R. W. Taylor, 1H and 13C NMR assignments and x-ray structures for three monocyclic benzo-annelated dilactam polyethers. Mag. Res. In Chem., 2006, 44, 901-904. doi: 10.1002/mrc.1868
2005
R. S. Srivastava, M. A. Khan, and K. M. Nicholas, Nitrosarene-Cu(II) Complexes are Intermediates in Copper-Catalyzed Allylic Amination. J. Am. Chem. Soc., 2005, 127, 7278-7279. doi: 10.1021/ja044093m
Y. G. Andreev, V. Seneviratne, M. Khan, W. A. Henderson, R. E. Frech, and P. G. Bruce, Crystal Structures of Poly(Ethylene Oxide)3:LiBF4 and (Diglyme)n:LiBF4 (n = 1,2). Chem. Mater., 2005, 17, 767-772. doi: 10.1021/cm048310u
W. A. Henderson, F. McKenna, M. A. Khan, N. R. Brooks, V. G. Young, Jr., and R. Frech, Glyme-Lithium Bis(trifluoromethanesulfonyl)imide and Glyme-Lithium Bis(perfluoroehtanesulfonyl)imide Phase Behaviour and Solvate Structures. Chem. Mater., 2005, 17, 2284-2289. doi: 10.1021/cm047881j
N. M. Rocher, R. Frech, and M. Kahn, Hydrogen Bonding and the Inductive Effect in Crystalline and Solution Phases of Hexylamine:LiCF3SO3 and Dipropylamine:LiCF3SO3: Application to Branched Poly(ethylimine). J. Phys. Chem. B., 2005, 109, 20697-20706. doi: 10.1021/jp052965g
2004
D. Cheng, M. A. Khan, and R. P. Houser, Structural Variability of Cobalt(II) Coordination Polymers: Three Polymorphs of Co3(TMA)2 [TMS = Trimesate, C6H3(COO)33-]. Cryst. Growth Des., 2004, 4, 599-604. doi: 10.1021/cg0342415
E. L. Klein, M. A. Khan, and R. P. Houser, Synthesis, Characterization, and Reactivity of New Copper(II) Complexes of 2-Methylthio-N-(2-pyridylmethyl)acetamide. Inorg. Chem., 2004, 43, 7272-7274. doi: 10.1021/ic049136e
J. D. Young, M. A. Khan, and R. J. Wehmschulte, Synthesis and Characterization of an Almost Linear, Quasi-Two-Coordinate, Cationic Diorganoaluminum compound. Organomet., 2004, 23, 1965-1967. doi: 10.1021/om0341707
R. A. Sanders, R. Frech, and M. A. Khan, Characterization of the Crystalline and Solution Phases in N,N'-Dimethylethylenediamine (DMEDA) with Sodium Triflate (NaCF3SO3). J. Phys. Chem. B, 2004, 108, 2186-2191. doi: 10.1021/jp030924j
J. Volkman and K. M. Nicholas, Efficient Synthesis of Tris(4-imidazolyl)methanol Derivatives. Org. Lett., 2004, 6, 4301-4302. doi: 10.1021/ol048214z
Y. A. Wanniarachchi, M. A. Khan, and L. M. Slaughter, An Unusally Static, Sterically Hindered Silver Bis(N-heterocyclic carbene) Complex and Its Use in Transmetalation. Organomet., 2004, 23, 5881-5884. doi: 10.1021/om0493098
A. Mondal, Y. Li, M. A. Khan, J. H. Ross, Jr., R. P. Houser, Supramolecular Cooper Hydroxide Tennis Balls: Self-Assembly, Structures, and Magnetic Properties of Octanuclear [Cu8L8(OH)4]4+ Clusters (HL = N(2-Pyridylmethyl)acetamide). Inorg. Chem., 2004, 43, 7075-7082. doi: 10.1021/ic0493292
V. Seneviratne, R. Frech, J. E. Furneaux, and M. Khan, Characterization of Crystalline and Solution Phases of Diglyme-LiSBF6. J. Phys. Chem. B, 2004, 108, 8124-8128. doi: 10.1021/jp031128g
R. A. Sanders, R. Frech, and M. A. Khan, Crystalline and Solution Phases in N,N,N',N',N"-Pentamethyldiethylenetriamine with LiCF3SO3 and NaCF3SO3. J. Phys. Chem B, 2004, 108, 12729-12735. doi: 10.1021/jp0313526
M. T. Ashby and H. Aneetha, Reactive sulfur species: aqueous chemistry of sulfenyl thiocyanates. J. Am. Chem. Soc., 2004, 126, 10216-10217. doi: 10.1021/ja048585a
2003
R. J. Wehmschulte, A. A. Diaz, and M. A. Khan, Unsymmetrical 9-Borafluorenes via Low-Temperature C-H Activation of m-Terphenylboranes. Organomet., 2003, 22, 83-92. doi: 10.1021/om020611v
R. J. Wehmschulte, J. M. Steele, J. D. Young, and M. A. Kahn, [2,6-Mes2C6H3]2Ga+ Li[Al{OCH(CF3)2}4]2- Mes = 2,4,6-Me3C6H2): A Compound Containing a Linear Unsolvated Two-Coordinate Gallium Cation. J. Am. Chem. Soc., 2003, 125, 1470-1471. doi: 10.1021/ja029142e
A. Mondal, E. L. Klein, M. A. Khan, and R. P. Houser, TACN-Amino Acid Conjugates and Their Copper(II) Complexes. Inorg. Chem., 2003, 42, 5462-5464. doi: 10.1021/ic034598y
R. A. Sanders, R. Frech, and M. A. Khan, Structural Investigation of Crystalline and Solution Phases in N,N,N',N'-Tetramethylethylenediamine (TMEDA) with Lithium Triflate (LiCF3SO3) and Sodium Triflate (NaCF3SO3). J. Phys. Chem. B, 2003, 107, 8310-8315. doi: 10.1021/jp022418k
R. Frech, V. Seneviratne, Z. Gadjourova, and P. Bruce, Vibrational study of the crystalline phases of (CH3(OCH2CH2)2OCH3)2LISbF6 and P(EO)6LiMF6 (M = P, As, Sb). J. Phys. Chem., 2003, 107, 11255-11260; 2005, 109, 12650-12650. doi: 10.1021/jp030199c
R. J. Wehmschulte, J. M. Steele, and M. A. Khan, Diterphenylgallium alkyls and hydride: synthesis, characterization, and reactivity. Organomet., 2003, 22, 4678-4684. doi: 10.1021/om030318a
2002
D. Cheng, M. A. Khan, and R. P. Houser, Novel Sandwich Coordination Polymert Composed of Cobalt(II), 1,2,4,5-Benzenetetracarboxylato Ligands, and Homopiperizonium Cations. Cryst. Growth Des., 2002, 2, 415-420. doi: 10.1021/cg025547z
G. B. Richter-Addo, P. Legzdins, and J. Burstyn, Introduction: Nitric Oxide Chemistry. Chem. Rev., 2002, 102, 857-860. doi: 10.1021/cr010188k
D. G. McGuire, M. A. Khan, and M. T. Ashby, Discontinuum Between a Thiolate and a Thiol Ligand. Inorg. Chem., 2002, 41, 2202-2208. doi: 10.1021/ic011096g
C. P. Rhodes, M. Khan, and R. Frech, Crystalline Phases of Poly(Ethylene Oxide) Oligomers and Sodium Triflate: Changes in Coordination and Conformation with Chain Length. J. Phys. Chem. B, 2002, 106, 10330-10337. doi: 10.1021/jp0141981
2001
L. Cheng, D. R. Powell, M. A. Khan, and G. B. Richter-Addo, Synthesis, Characterization, Solid-State Molecular Structures, and Deprotonation Reactions of Cationic alcohol complexes of Osmium Nitrosyl Porphyrins. Inorg. Chem., 2001, 40, 125-133. doi: 10.1021/ic0007512
R. J. Wehmschulte, M. A. Khan, B. Twamley, and B. Schiemenz, Synthesis and Characterization of a Sterically Encumbered Ynsymmetrical 9-Borafluorene, Its Pyridine Adduct, and Its Dilithium Salt. Organomet., 2001, 20, 844-849. doi: 10.1021/om000868y
U. Fooken, M. A. Khan, and R. J. Wehmschulte, Novel Aluminum Hydride Derivatives from the Reaction of H3Al·NMe3 with the Cyclosilazanes [Me2SiNH]3 and [Me2SiNH]4. Inorg. Chem., 2001, 40, 1316-1322. doi: 10.1021/ic000636r
R. J. Wehmschulte, M. A. Khan, and S. I. Hossain, Reaction of m-Terphenyldichlorophosphanes with Sodium Azide: Synthesis and Characterization of Stable Azidocyclophosphazenes. Inorg. Chem., 2001, 40, 2756-2762. doi: 10.1021/ic0014538
J. C. Stephens, M. A. Khan, and R. P. Houser, Copper(II) Acetate Complexes, [CuLm(OAc)2]n (L = HNPPh3), Stable in the Solid State Either as a Dimer (m = 1, n = 2), or a Monomer (m = 2, n = 1). Inorg. Chem., 2001, 40, 5064-5065. doi: 10.1021/ic0155636
G. B. Richter-Addo, R. A. Wheeler, C. A. Hixson, L. Chen, M. A. Khan, M. K. Ellison, C. E. Schulz, and W. R. Scheidt, Unexpected Nitrosyl-Group Bending in Six-Coordinate {M(NO)}6 σ-Bonded Aryl(iron) and (ruthenium) Porphyrins. J. Am. Chem. Soc., 2001, 123, 6314-6326. doi: 10.1021/ja010276m
M. T. Ashby, S. S. Alguindigue, J. D. Schwane, and T. A. Daniel, Regular and Inverse Secondary Kinetic Enthalpy Effects (KHE) for the Rate of Inversion of Thioether and 1,1'-Biisoquinoline Complexes of Ruthenium and Osmium. Inorg. Chem., 2001, 40, 6643-6650. doi: 10.1021/ic0105720
D. Cheng, M. A. Khan, and R. P. Houser, Coordination Polymers Composed of Copper(II), Trimesic Acid, and Imidazole: 3D Architecture Stabilized by Hydrogen Bonding. Inorg. Chem., 2001, 40, 6858-6859. doi: 10.1021/ic015609v
G. B. Richter-Addo, R. A. Wheeler, C. A. Hixson, L. Chen, M. A. Khan, M. K. Ellison, C. E. Schulz, and W. R. Scheidt, Unexpected Nitrosyl-Group Bending in Six-Coordinate {M(NO)}6 σ-Bonded Aryl(iron) and -(ruthenium) Porphyrins. J. Am. Chem. Soc., 2001, 123, 6314-6326. doi: 10.1021/ja010276m
R. J. Wehmschulte, B. Twamley, and M. A. Khan, Synthesis and Characterization of an Unsolvated Dimeric Diarylmagnesium Compound and Its Magnesium Iodide Byproducts. Inorg. Chem., 2001, 40, 6004-6008. doi: 10.1021/ic010513m
H. Schumann, O. Stenzel, F. Girgsdies, and R. L. Halterman, Synthesis and characterization of (-)-1-menthyl-4,7-dimethylindene and its main group metal compounds with lithium, sodium, potassium, and tin. Organomet., 2001, 20, 1743-1751. doi: 10.1021/om001074m
H. Schumann, O. Stenzel, S. Dechert, and R. L. Halterman, Menthyl-functionalized chiral nonracemic bis(indenyl) complexes of zirconium, iron, nickel, and ruthenium. Organomet., 2001, 20, 1983-1991. doi: 10.1021/om001084n
H. Schumann, O. Stenzel, S. Dechert, F. Girgsdies, and R. L. Harterman, Menthyl-functionalized chiral nonracemic monoindenyl complexes of rhodium, iridium, cobalt, and molybdenum. Organomet., 2001, 20, 2215-2225. doi: 10.1021/om001083v
H. Schumann, O. Stenzel, S. Dechert, F. Girgsdies, and R. L. Halterman, (-)-2-menthylindenyl and (-)-2-menthyl-4,7-dimethylindenyl complexes of rhodium, iridium, cobalt, and molybdenum. Organomet., 2001, 20, 5360-5368. doi: 10.1021/om010574s
R. J. Wehmschulte, M. A. Khan, B. Twamley, and B. Schiemenz, Synthesis and characterization of a sterically encumbered unsymmetrical 9-borafluorene, its pyridine adduct, and its dilithium salt. Organomet., 2001, 20, 844-849. doi: 10.1021/om000868y
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