Faculty Biography

Dr. Mark M. Turnbull

Mark M. Turnbull

Synthetic Chemistry

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

Office: S307, Sackler Sciences Center
Phone: 508-793-7167
E-mail: mturnbull@clarku.edu

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 matter 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

255) Dgachi, S.; Turnbull, M.M.; Mezzadri, F.; Boonmak, J.; Youngme, S.; Norquist, A.J.; Gagoug, Y.; Houcine Naïli, H. Inorg. Chim. Acta 2021, 514, 119997/1-10. “Polymorphism in the metal-organic hybrid (PhCH2NEt3)2[CoBr4]: Synthesis, crystal structures and physico-chemical characterizations”

256)Meehan, K.L.*; Fontaine, D. FA*; Richardson, A.D.*; Fowles, S.M.*; Mukda, B.*; Monroe, J.C.#; Landee, C.P.; Dickie, D.A.; Turnbull, M.M.; Jiang, S.; Xiao, F. Polyhedron 2021, 200, 115094/1-14. “The Synthesis, Structure, and Magnetic Properties of Nickel (II) 6-Coordinate Species with Several Substituted Aniline Ligands” (Special Issue on Undergraduate Research)

257) Landee, C.P.; Kirkman-Davis, E.;* Turnbull, M.M.; Polson, M.; Wikaira, J.L. J. Coord. Chem. 2021, 74, 266-78. “Synthesis, structure and magnetic properties of catena-diaqua-bis(pyridine-N-oxide)(μ-pyrazine)copper(II) perchlorate and the monomeric structure tetrakis(pyridine-N-oxide)copper(II) perchlorate”

258) Awwadi, F.F.; Alwahsh, M.I.; Turnbull, M.M., Landee, C.P.; Twamley, B. Dalton Trans. 2021, 50, 4167-78. “Two New Canted Antiferromagnetic Systems: Magnetic, Theoretical, and Crystallographic Studies on trans-Bis(2-Iodopyridine)dihalocopper(II)”

259) Hamdi, I.; Mhadhbi, N.; Issaoui, N.; Roodt, A.; Turnbull, M.M.; Naϊli, H. J. Mol. Struct.  2021, 1237, 130384/1-12. “Design, synthesis and physico-chemical studies of a novel Co(II)/Co(III) mixed-valence complex: An experimental and DFT approach.”

260) Carnevale, D.J.; Dawe, L.N.; Landee, C.P.; Turnbull, M.M.; Wikaira, J.L. Polyhedron 2021, 202, 115200. “The Synthesis, Structure, and Magnetic Properties of a Family of Mn(II) Compounds with Substituted 2-aminopyridinium Ions” (Special Issue on Manganese Chemistry)

261) Protsenko, A.N.; Shakirova, O.G.; Protsenko, A.E.; Kuratieva, N.V.; Fowles, S.M.*; Turnbull, M.M.; J. Mol. Struct. 2021, 1240, 130561/1-8.  “Effect of isomeric cations of 3(2)-(chloromethyl)pyridine on the structure and properties of copper(II) and cobalt(II) complexes”

262) Zvyagin, S.A.; Ponomaryov, A.N.; Schulze, E.; Ozerov, M.; Skourski, Y.; Reimann,T.; Zviagina, L.I.; Bhaskaran, L.; Green, E.L.; Wosnitza, J.; Sheikin, I.; Kollath, C.; Bouillot, P. Giamarchi, T.; Wikaira, J.L.; Turnbull, M.M.; Landee, C.P. Phys. Rev. B 2021, 103, 205131/1-7. “Magnetic properties of a quantum spin ladder in the proximity of isotropic point”

263) Bourwina, M.; Msalmi, R.; Walha, S.; Turnbull, M.M.; Roisnel, T.; Costantino, F.; Mosconi, E.; Naïli, H.  J. Mat. Chem. C. 2021, 9. 5970-6.  “A new lead-free 1D hybrid copper perovskite with structural, thermal, vibrational, optic and magnetic characterizations”

264) Addison, A.W.; Brayman, E.A.; Jaworski, S.; Jasinski, J.P.; Turnbull, M.M.; Xiao, F.#; O'Connor, M.A. Acta Cryst E 2022, E78, 235-43. "Chlorocobalt complexes with pyridylethyl-derived azacycloalkanes." (Issue cover article)

265) Hamdi, I.; Khan, Y.; Aouaini, F.; Seo, J.-W; Koo, H.-J.; Turnbull, M.M.; Walker, B.; Naїli, H. J. Mat. Chem. C 2022, 10, 3738-45. “Copper-Based 2D Hybrid Perovskite Solar Absorber as an Eco-Friendly Alternative to Lead Halide Perovskites”

266) Monroe, J.C.#; Carvajal, M.A.; Landee, C.P.; Deumal, M.; Turnbull, M.M.; Wikaira, J.L.; Dawe, L.N. Dalton Trans. 2022, 51, 4653 - 4667. “Nearly isotropic, all-pyrazine-bridged antiferromagnetic spin ladders: Structure and magnetism”

267) Hong, T.; Ying, T.; Huang, Q.; Dissanayake, S.E.; Qiu, Y.; Turnbull, M.M.; Podlesnyak, A.; Wu, Y.; Cao, H.; Liu, Y.; Umehara, I.; Gouchi, J.; Uwatoko, Y.; Matsuda, M.; Tennant, D.; Chern, G.-W.; Schmidt, K.P.; Wessel, S. Nat. Commun. 2022, 13, 3073(1-9). “Evidence for pressure induced unconventional quantum phase transition with fractionalization in the ladder antiferromagnet C9H18N2CuBr4

268) Landee, C.P.; Dickie, D.A.; Turnbull, M.M.; Wikaira, J.L. J. Coord. Chem. 2022, 5-6, 738-51. “Cu(II) complexes with coordinated pyrazine-dioxide: pyrazine bridged chains”

* Clark Undergraduate Student Co-author
# Clark Graduate Student Co-author
^ Summer Research Student, non-Clark