Gustaf H. Carlson School of Chemistry

Dr. Mark M. Turnbull

Mark M. Turnbull

Synthetic Chemistry

Professor of Chemistry
Carlson School of Chemistry
Clark University
Worcester, MA 01610-1477

Office: S307, Sackler Sciences Center
Phone: 508-793-7167

Curriculum Vitae

Professor Turnbull served as a visiting lecturer at the University of Canterbury, Christchurch, NZ in 1995, and as a visiting professor at the Universitat de Barcelona, Spain in 2001-2002.


Ph.D. Brandeis University, 1987
M.S. University of New Hampshire, 1984
B.S. University of New Hampshire, 1978

Current Research

Our research lies in the preparation of new materials and is focused in two areas.

Molecular Magnetism
Over the last two decades, a new field of research has emerged called molecular magnetism. The guiding principle is to use our understanding of structure, bonding and geometry to control the bulk magnetic properties of a material at the molecular level. This is highly interdisciplinary work and involves teams of collaborating organic and inorganic chemists, theoreticians and condensed physicists (our group works in collaboration with that of Prof. Christopher Landee in the Physics Dept. as well as several groups around the world, including Spain, Germany, Great Britain and New Zealand).

Low-dimensional Antiferromagnets
The copper oxide-based high temperature superconductors have introduced a new era to the field of conducting materials, but the mechanism of their superconductivity is still not well understood. One theory suggests that the mechanism of the electrical superconductivity is relted to the mechanism of magnetic super-exchange in these compounds. We are working to prepare structurally related complexes which have more moderate ordering tempertures as models for these systems and others where the magnetic interactions are not principally propagatged in 3-dimensions. Of special interests are those materials where the magnetic interactions are not strictly one- or two-dimensional in nature, but whose topology may be described as inter-dimensional, such as ladders, honeycombs and rectangles. We have recently succeeded in preparing a large family of the best examples of magnetic ladders known (at right) and experiments are in progress to determine their properties and whether doping the systems will generate superconducting materials as predicted by theory.

Selected Publications

Shapiro, A.*; Landee, C.P.; Turnbull, M.M.; Jornet, J.; Deumal, M.; Novoa, J.J.; Robb, M.; Lewis, W. J. Am. Chem. Soc. 2007, 129, 952-9.  “Synthesis, Structure and Magnetic Properties of an Antiferromagnetic Ladder Complex: bis(2,3-dimethylpyridinium) tetrabromocuprate”

Sologubenko, A.V.; Berggold, K.; Lorenz, T.; Rosch, A.; Shimshoni, E.; Phillips, M.D.*; Turnbull, M.M.  Phys. Rev. Lett. 2007, 98, 107201. “Magnetothermal transport in the spin ½ chains of copper pyrazine dinitrate”

Woodward, F.M.#; Gibson, P.J.*; Jameson, G.; Landee, C.P.; Turnbull, M.M; Willett, R.D., Inorg. Chem. 2007, 46, 4256-66. “Syntheses, X-ray structures and Magnetic Behavior of [Cu(pz)2](ClO4)2, [Cu(pz)2](BF4)2 and [Cu(pz)2(NO3)](PF6).”

Li, L.#; Turnbull, M.M.; Landee, C.P.; Jornet, J.; Deumal, M.; Novoa, J.J.; Wikaira, J.L. Inorg. Chem. 2007,46, 11254-65. “Synthesis, structure and magnetic behavior of bis(2-amino-5-fluoropyridinium) tetrachlorocuprate(II)”

Sologubenko, A.V.; Lorenz, T.; Mydosh, J.A.; Rosch, A.; Shortsleeves, K.C.*; Turnbull, M.M.; Phys. Rev. Lett. 2008, 100, 137202. “Field-dependent thermal transport in the Haldane chain compound NENP”

Butcher, R.T.#; Turnbull, M.M.; Landee, C.P.; Wells, B.M.*; Novoa, J.J.; Ribas-Ariño, J.; Sandvik, A.W.; Awwadi, F.F. ChemComm. 2009, 1359-61. “Through-space Two-halide Magnetic Exchange of 2J = -234(1) K in (2,5-Dimethylpyrazine)copper(II) Bromide”

Xiao, F.#; Woodward, F.M.#; Landee, C.P.; Turnbull, M.M.; Mielke, C.; Harrison, N.; Lancaster, T.; Blundell, S.J.; Baker, P.J.; Babkevich, P.; Pratt, F.L. Phys. Rev. B 2009, 79, 134412. “Observation of 2D XY Behavior in quasi-2D Quantum Heisenberg Antiferromagnets”

Shortsleeves, K.C.*; Dawe, L.N.; Landee, C.P.; Turnbull, M.M. Inorg. Chim. Acta. 2009, 362, 1859-66.  “Transition metal complexes of 2-amino-3,5-dihalopyridines: Synthesis, structures and magnetic properties of Cu(3,5-diCAP)2X2 and Cu(3,5-diBAP)2X2”

Tsyrulin, N.; Pardini,T.; Singh, R.R.P.; Xiao, F.#; Link, P.; Schneidewind, A.;  Hiess, A.; Landee, C.P.;  Turnbull, M.M.; Kenzelmann, M.  Phys. Rev. Lett. 2009, 102, 197201. “Quantum effects in a weakly-frustrated S=1/2 two-dimensional Heisenberg antiferromagnet in an applied magnetic field” (selected for inclusion in the 2009 ILL annual report)

Kühne, H.; Klauss, H.-H.; Grossjohann, S.;  Brenig, W.;  Litterst, F.J.; Reyes, A.P.;  Kuhns, P.L.;  Turnbull, M.M.; Landee, C.P. Phys. Rev. B 2009, 80, 045110. “Quantum critical dynamics of a S = 1/2 antiferromagnetic Heisenberg chain studied by 13C-NMR spectroscopy”

Tremelling, G.W.*; Foxman, B.M.; Landee, C.P.; Turnbull, M.M.; Willett, R.D. Dalton Trans. 2009, 10518-26.  “Transition metal complexes of 2-amino-3,5-dihalopyridines: Syntheses, structures and magnetic properties of (3,5-diCAPH)2CuX4 and (3,5-diBAPH)2CuX4.”

Butcher, R.T.#; Turnbull, M.M.; Shapiro, A.*; Xiao, F.#; Landee, C.P.; Garrett, D.J.; Robinson, W.T.; Twamley, B. Inorg. Chem. 2010, 49, 427-34. “Crystal structure and magnetism of a well isolated 2D-Quantum Heisenberg Antiferromagnet, (Quinolinium)2CuBr4•2H2O and its anhydrous form”

Jornet-Somoza, J.; Deumal, M.; Robb, M.A.; Landee, C.P.; Turnbull, M.M.; Feyerherm, R.; Novoa, J.J. Inorg. Chem.  2010, 49, 1750-60. “The 1D to 3D magnetic transformation in the copper pyrazine dinitrate S=1/2 antiferromagnetic crystal. A first-principles bottom-up study”

Herringer, S.N.*; Longendyke, A.J.*; Turnbull, M.M.; Landee, C.P.; Wikaira, J.L.; Jameson, G.B.; Telfer, S.G. Dalton Trans. 2010, 39, 2785-97. “Synthesis, Structure, and Magnetic Properties of bis(monosubstituted-pyrazine)dihalocopper (II) [where substituent = Cl, CN, OCH3, OCH2CH3 and halogen = Cl or Br].”

Günaydin-?en, Ö.; Lee, C.; Tung, L.C.; Chen, P.; Turnbull, M.M.; Landee, C.P.; Wang, Y.J.; Whangbo, M.-H.; Musfeldt, J.L. Phys. Rev. B  2010, 81, 104307.1-5. “Spin-lattice interactions through the quantum critical transition in Cu(pyz)(NO3)2”

Tsyrulin, N.; Xiao, F.#; Schneidewind, A.; Link, P.; R?nnow, H.M.; Gavilano, J.; Landee, C.P.; Turnbull, M.M.; Kenzelmann, M. Phys. Rev. B 2010, 81, 134409/1-9. “The two-dimensional square-lattice S=1/2 antiferromagnet Cu(pz)2(ClO4)2”

Carnevale, D.J.*; Landee, C.P.; Turnbull, M.M.; Winn, M.*; Xiao, F.# J. Coord. Chem. 2010, 63, 2223-38. “Co(II) halide complexes with 2-amino-3-methylpyridinium and 2-amino-5-methylpyridinium: Synthesis, Crystal Structures and Magnetic Properties”

Wikaira, J.L.; Li, L.#; Butcher, R.; Fitchett, C.M.; Jameson, G.B.; Landee, C.P.; Telfer, S.G.; Turnbull, M.M. J. Coord. Chem. 2010, 63, 2949-64. “Transition metal complexes of 2-amino-3-chloro-5-trifluoromethylpyridine: Syntheses, structures and magnetic properties of [(TMCAPH)2CuBr4] and [(TMCAPH)2CuCl4]” (cover article)

Jornet-Somoza, J.; Deumal, M.; Landee, C.P.; Turnbull, M.M.; Novoa, J.J Inorg. Chem. 2010, 49, 8017-24. “A Reexamination of the Magnetic Properties of (5MAP)2CuBr4 [5MAP = 5-methyl-2-aminopyridinium].”

Hong, T.; Kim, Y.H.; Hotta, C.; Takano, Y.; Tremelling, G.*; Turnbull, M.M.; Landee, C.P.; Kang, H.-J.; Christensen, N.B.; Lefmann, K.; Schmidt, K.P.; Uhrig, G.S.; Broholm, C. Phys. Rev. Lett. 2010, 105, 137207(1-4). “Field induced Luttinger-liquid phase in a two-leg spin-1/2 ladder with strong rail interactions”

Selmani,V.*; Landee, C.P.; Turnbull, M.M.; Wikaira, J.L.; Xiao, F.  Inorg. Chem. Commun. 2010, 13, 1399-1401. “An Extremely Well Isolated 2D-Antiferromagnetic Layer”

Ludy, S.J.#; Landee, C.P.; Turnbull, M.M.; Wikaira, J.L. J. Coord. Chem. 2011, 64, 134-44. “Synthesis, Structure and Magnetic Behavior of a Pyrazine-bridged Cu(II)/Au(CN)2 Complex”

Hong, T.; Gvasalia, S.N.; Herringer, S.#; Turnbull, M.M.; Landee, C.P.; Regnault, L.-P.; Boehm, M.; Zheludev, A. Phys. Rev. B. 2011, 83, 052401(1-4). “Dynamics of the two-dimensional S=(1/2) dimer system (C5H6N2F)2CuCl4”

Edwards, K.*; Herringer, S.N.*; Parent, A.R.*; Provost, M.*; Shortsleeves, K.C.*; Turnbull, M.M.; Dawe, L.N. Inorg. Chim. Acta 2011, 368, 141-51. “Transition Metal Halide Salts of 8-Methylquinolinium:  Crystal Structures of (8-methylquinolinium)2 MX4 • nH2O (M = Cu, Co, Zn; X = Cl, Br; n = 0,1)”

Kühne, H.; Zvyagin, A.A.; Günther, M.; Reyes, A.P.; Kuhns, P.L., Turnbull, M.M.; Landee, C.P.; Klauss, H.-H. Phys. Rev. Rapid Comm. 2011, 83, 100407(R). “Dynamics of a Heisenberg spin chain in the quantum critical regime: NMR experiment versus effective field theory.”

Herringer, S.N.*; Turnbull, M.M.; Landee, C.P.; Wikaira, J.L. Dalton Trans. 2011, 40, 4242-52. “Copper (II) Complexes of 2-halo-3-methylpyridine: Syntheses, Structures, and Magnetic Behavior of Cu(2-X-3-CH3py)2X’2 [X, X’ = chlorine or bromine; py = pyridine]”

Keith, B.C.#; Landee, C.P.; Valleau, T.*; Turnbull, M.M.; Harrison, N. Phys. Rev. B. 2011, 84, 104442  “Rectangular two-dimensional S=1/2 rectangular Heisenberg antiferromagnets; simulation and experiment”

Keith, B.#; Xiao, F.#; Landee, C.P.; Turnbull, M.M.; Zheludev, A. Polyhedron, 2011, 30, 3006-9. “Random Rung Exchange in the Spin Ladder Cu(quinoxaline)X2 (X = Cl, Br)”

Ninios, K.; Hong, T.; Manabe, T.; Hotta, C.; Herringer, S.N.#; Turnbull, M.M.; Landee, C.P.; Takano, Y.; Chan, H.B.  Phys. Rev. Lett., 2012, 108, 097201.1-5.  “Wilson ratio of a Tomonaga-Luttinger liquid in a spin-1/2 Heisenberg Ladder”

Schlueter, J.A.; Park, H.; Halder, G.J.; Armand, W.R.; Dunmars, C.; Chapman, K.W.; Manson, J.L.; Singleton, J.; McDonald, R.; Plonczak, A.; Kang, J.; Whangbo, M.-H.; Lancaster, T.;  Steele, A.J.; Franke, I.; Wright, J.M.; Blundell, S.J.; Pratt, F.L.; DeGeorge, J.*; Turnbull, M.M.; Landee, C.P. Inorg. Chem.2012, 51, 2121-29. “Importance of Halogen•••Halogen Contacts for the Structural and Magnetic Properties of Cu(pyrazine-N,N′-dioxide)(H2O)2X2 (X = Cl, Br)”

Abdalrahman, M.*; Landee, C.P.; Telfer, S.; Turnbull, M.M.; Wikaira, J.L. Inorg. Chim. Acta, 2012, 389, 66-76.  “Copper(II) halide coordination complexes and salts of 3-halo-2-methylpyridines:  Synthesis, structure and magnetism”

Rademeyer, M.; Turnbull, M.M.; Landee, C.P.; Kunene, M.; Liles, D.C. Sol. St. Sci. 2012, 14, 1106-10.  “Crystal structure and magnetic properties of catena-poly[[bromido[trans (1S,2S)/(1R,2R)-cyclohexane-1,2-diamine copper(II)]-?3-bromido]”

Jornet-Somoza, J.; Codina-Castillo, N.; Deumal, M.; Mota, F.; Novoa, J.J.; Butcher, R.T.#; Turnbull, M.M.; Keith, B.#; Landee, C.P.; Wikaira, J.L.  Inorg. Chem. 2012, 51, 6315-25. “Synthesis, structure, magnetic behavior and theoretical analysis of diazine-bridged magnetic ladders: Cu(quinoxoline)X2 and Cu(2,3-dimethylpyrazine)X2 (X = Cl, Br)”

Awwadi, F.F.; Dawe, L.N.; Landee, C.P.; Turnbull, M.M.  J. Coord. Chem. 2012, 65, 3064-74. “Catena-Bis(aqua(3-oxy-2-pyridono)copper(II))µ-pyrazine diperchlorate:  a perchlorate bridged magnetic ladder”

Kuppuswamy, S.;  Bezpalko, M.W.;  Powers, T.M.; Turnbull, M.M.; Foxman,B.M.; Thomas, C.M. Inorg. Chem. 2012, 51, 8225-40. “Utilization of Phosphinoamide Ligands in Homobimetallic Fe and Mn Complexes:  The Effect of Vastly Different Coordination Environments on Metal-Metal Interactions and Magnetic and Redox  Properties”
Datta, A.; Liu, P.-H.; Huang, J.-H.; Garribba, E.; Turnbull, M. ; Machura, B.; Hsu, C.-L.; Chang, W.-T.; Pevec, A. Polyhedron 2012, 44, 77-87. “End-to-end Thiocyanato-Bridged Zig-zag Polymers of CuII, CoII and NiII with a Hydrazone Ligand : EPR, Magnetic Susceptibility and Biological Study”

Gale, A.*; Landee; C.P.; Turnbull, M.M.; Wikaira, J.L. Polyhedron in press. “Synthesis, Structure, and Magnetism of two tetrahalocuprate salts:  (5-TFAPH)2CuX4 (5-TFAP = 2-amino-5-trifluoromethylpyridine, X = Cl, Br)”

Wikaira, J.L.; Landee, C.P.; Ludy, S.J.#; Turnbull, M.M. Polyhedron in press.  “Tetrahalocuprate salts of substituted 4-aminopyridines:  Synthesis, Structure and Magnetic Properties”

Landee, C.P.; Turnbull, M.M. accepted for publication in Eur. J. Inorg. Chem. “Recent Developments in Low-Dimensional Cu(II) Molecular Magnets: A Review”


* Clark Undergraduate Student Co-author
# Clark Graduate Student Co-author