Dr. Curtis Zaleski

Curtis-Zaleski-Faculty-Photo-2016


Office: FSC 313
Phone: (717) 477-1522
Email: cmzaleski@ship.edu
Webpage: http://webspace.ship.edu/cmzaleski/





Research Introduction

Research in the Zaleski group focuses on coordination chemistry and magnetochemistry. Working with a class of inorganic molecules known as metallacrowns, we are investigating the electronic and magnetic properties of these compounds. To synthesize these metallacrowns, we strive to use readily available ligands. Hopefully these molecules will have interesting magnetic properties and behave as single-molecule magnets.

Technical Summary

So what are metallacrowns and single-molecule magnets (SMMs)? Metallacrowns are the inorganic analogues to organic crown ethers. Metallacrowns contain a M-N-O repeat unit and often contain multiple metal centers in an individual molecule. Due to the high density of metal centers in one molecule, they potentially have interesting magnetic properties, such as single-molecule magnetism. SMMs are molecules that contain a single magnetic domain within a metal-based complex. In ac magnetic susceptibility experiments, the SMM behavior is manifested as a frequency dependent signal. The cause of the signal is the slow relaxation of the magnetization of the molecule. The magnetization is hindered by an energy barrier which is equal to S2|D|, where S is the ground spin state and D is the magnetoanisotropy of the molecule. Thus by increasing the spin of the molecule or by increasing the anisotropy of the molecule, a better SMM can be synthesized. The goal is to produce SMMs with high operating temperatures.

We are also collaborating with Dr. Vincent Pecoraro at the University of Michigan and Dr. Matteo Tegoni at the University of Parma. Please check out the Pecoraro group and Tegoni group webpages to find out more about their research.

Publications

* Indicates Shippensburg University Undergraduate Student Researcher Co-author

  1. Travis, J. R*.; Zeller, M.; Zaleski, C. M. “Facile Carboxylate Ligand Variation of Heterotrimetallic 12-Metallacrown-4 Complexes” Polyhedron, Accepted and In PressDOI: 10.1016/j.poly.2015.09.006 [The article was published online on September 10, 2015. The scheduled publish date for the print version is mid-2016 in a special issue titled “Undergraduate Research in Inorganic Chemistry”]
  2. li>Travis, J. R*.; Zeller, M.; Zaleski, C. M. “Crystal structure of di-m-chloro­acetato-hexa­kis­(di­methyl­formamide)­tetra­kis­(m-N,2-dioxido­benzene-1-carboximidato)tetra­manganese(III)disodium di­methyl­formamide disolvate” Acta Cryst.2015, E71, 1300 – 1306.
  3. Chow, C. Y.; Trivedi, E. R.; Pecoraro, V.; Zaleski, C. M. “Heterometallic Mixed 3d-4f Metallacrowns: Structural Versatility, Molecular Magnetism, and Luminescence” Comments Inorg. Chem.2015, 35, 214 – 253. [This article was selected as the cover feature for the 2015 volume, which is printed only once per year for all six issues in the collective volume.]
  4. Zaleski, C. M.; Lutter, J. C.*; Zeller, M. “Crystallization of the MnII[12-MCMnIII(N)shi-4]2+Structure with 1,2,4-Triazolate from Methanol” J. Chem. Crystallogr.2015,45, 142 – 150.
  5. Mengle, K. A*; Longenecker, E. J.*; Zeller, M.; Zaleski, C. M. “One-Dimensional Coordination Polymers of 12-Metallacrown-4 Complexes: {Na2(L)2[12-MCMnIII(N)shi-4]}n, where L is either -O2CCH2CH3 or -O2CCH2CH2CH3J. Chem. Crystallogr.2015, 45, 36 – 43.
  6. Daly, C. I.; Zeller, M.; Zaleski, C. M. “Crystal structure of di--chloro­acetato-hexa­kis­(di­methyl­formamide)­tetra­kis­(-,2-dioxido­benzene-1-carboximidato)tetra­manganese(III)disodium di­methyl­formamide disolvateActa Cryst.2014, E70, 494 – 498.
  7. Azar, M. R.*; Boron, T. T., III; Lutter, J. C.*; Daly, C. I.*; Zegalia, K. A*; Nimthong, R.; Ferrence, G. M.; Zeller, M.; Kampf, J. W.; Pecoraro, V. L.; Zaleski, C. M. “Controllable Formation of Heterotrimetallic Coordination Compounds – Systematically Incorporating Lanthanide and Alkali Metal Ions into the Manganese 12-Metallacrown-4 Framework” Inorg. Chem.2014, 53, 1729 – 1742.
  8. Lutter, J. C.*; Kampf, J. W.; Zeller, M.;Zaleski, C. M. “Bis(dimethylformamide) pentakis(m-N,2-dioxidobenzene-1-carboximidato)tetrakis (1-methylimidazole)di-m-propionatopentamanganese(III)manganese(II)–dimethylformamide–methanol (1/0.24/1.36)” Acta Cryst.2013, E69, m483 – m484.
  9. Tigyer, B. R.*; Zeller, M.; Zaleski, C. M. “m3-Acetato m2-acetato (dimethylformamide) pentakis(m -N,2-dioxidobenzene-1-carboximidato) pentakis(1-methyl-1H-imidazole) pentamanganese(III)-manganese(II)–diethyl ether–dimethylformamide–methanol–water (1/1/1/1/0.49)” Acta Cryst.2013, E69, m393 – m394.
  10. Sirovetz, B. J.*; Walters, N. E.*; Bender, C. N.*; Lenivy, C. M.*; Troup, A. S.*; Predecki, D. P.; Richardson, J. N; Zaleski, C. M. “A Multiweek Upper-Division Inorganic Laboratory Based on Metallacrowns” J. Chem. Ed. 2013, 90, 782 – 785.
  11. Tigyer, B. R.*;Zeller, M.; Zaleski, C. M. “Pentakis(m3-N,2-dioxidobenzene-1-carboximidato)di-m2-formato-pentakis(1H-imidazole)methanolpentamanganese(III)-manganese(II)-methanol-water (1/3.36/0.65)” Acta Cryst.2012, E68, m1521-m1522.
  12. Zaleski, C. M.; Tricard, S.; Depperman, E. C.; Wernsdorfer, W.; Mallah, T.; Kirk, M. L.; Pecoraro, V. L. “Single Molecule Magnet Behavior of a Pentanuclear Mn-Based Metallacrown Complex: Solid State and Solution Magnetic Studies” Inorg. Chem. 2011, 50, 11348-11352.
  13. Zaleski, C. M.; Lim, C.-S.; Cutland-Van Noord, A. D.; Kampf, J. W.; Pecoraro, V. L. “Effects of the central lanthanide ion crystal radius on the 15-MCCuII(N)pheHA-5 Structure” Inorg. Chem.2011, 50, 7707-7717.
  14. Tigyer, B. R.*;Zeller, M.; Zaleski, C. M. “Di-m-acetato- bis(dimethylformamide) tetrakis(1-ethylimidazole)pentakis(m-N,2-dioxidobenzene-1-carboximidato) pentamanganese(III)manganese(II)-diethyl ether-dimethylforamide-methanol-water (1/1/1/1/0.12)” Acta Cryst.2011, E67, m1041-m1042.
  15. Herring, J.*; Zeller, M.; Zaleski, C. M. “Bis(tetraethylammonium) bis(dimethylformamide) tetrakis(m-N,2-dioxidobenzene-1-carboximidato) pentacopper(II)” Acta Cryst.2011, E67, m419-m420.
  16. Emerich, B.*; Smith, M.*; Zeller, M.; Zaleski, C. M. “Synthesis and crystal structure of MnII(OAc)2[15-MCMnIII(N)shi-5](Im)3(EtOH)3 (shi3- = salicylhydroximate, -OAc = acetate, Im = imidazole, and EtOH = ethanol)” J. Chem. Crystallogr. 2010,40, 769-777.
  17. Zaleski, C. M.; Weng, T.-C.; Dendrinou-Samara, C.; Alexiou, M.; Kanakaraki, P.; Hsieh, W.-Y.; Kampf, J.; Penner-Hahn, J. E.; Pecoraro, V. L.; Kessissoglou, D. P. “Structural and Physical Characterization of Tetranuclear [MnII3MnIV] and [MnII2MnIII2] Valence-Isomer Manganese Clusters,” Inorg. Chem.2008, 47, 6127-6136. This article was the cover art for issue 14.
  18. Meelich, K.; Zaleski, C. M.; Pecoraro, V. L. “Using Small Molecule Complexes to Elucidate Features of Photosynthetic Water Oxidation,” Phil. Trans. R. Soc. B2008,363, 1271-1281.
  19. Mezei, G.; Zaleski, C. M.; Pecoraro, V. L. “Structural and Functional Evolution of Metallacrowns,” Chem. Rev. 2007,107, 4933-5003.
  20. Afrati, T.; Zaleski, C. M.; Dendrinou-Samara, C.; Mezei, G.; Kampf, J. W.; Pecoraro, V. L.; Kessissoglou, D. P. “Di-2-pyridyl Ketone Oxime in Copper Chemistry: Di-, Tri-, Penta- and Hexanuclear Complexes,” Dalton Trans.2007, 2658-2668.
  21. Zaleski, C. M.; Cutland-Van Noord, A. D.; Kampf, J. W.; Pecoraro, V. L. “Controlling the Polymorph of LnIII(NO3)3-x(OH)x[15-MCCuII(N)S-pheHA-5] Complexes Through Solvent Type and LnIII Ion Choice,” Cryst. Growth Des., 2007, 7, 1098-1105.
  22. Zaleski, C. M.; Kampf, J. W.; Mallah, T.; Kirk, M. L.; Pecoraro, V. L. “Assessing the Slow Magnetic Relaxation Behavior of LnIII4MnIII6Metallacrowns,” Inorg. Chem. 2007,46, 1954-1956.
  23. Zaleski, C. M.; Depperman, E. C.; Kampf, J. W.; Kirk, M. L.; Pecoraro, V. L. “Using LnIII[15-MCCuII(N)(S)-pheHA-5]3+ Complexes to Construct Chiral Single-Molecule Magnets and Chains of Single-Molecule Magnets,” Inorg. Chem. 2006,45, 10022-10024.
  24. Hsieh, W.-Y.; Zaleski, C. M.; Pecoraro, V. L.; Liu, S. “Mn(II) Complexes of Monoanionic Bidentate Chelators: the X-Ray Crystal Structures of Mn(DHA)2(CH3OH)2 and [Mn(ema)2(H2O)]2·2H2O,” Inorg. Chim. Acta 2006, 359, 228-236.
  25. Afrati, T.; Dendrinou-Samara, C.; Zaleski, C. M.; Kampf, J. W.; Pecoraro, V. L.; Kessissoglou, D. P. “Synthesis and Structure of [18-MCCuII(N)pko-6]6+: A New Member of Anion Encapsulating Metallamacrocycles,” Inorg. Chem. Comm. 2005, 8, 1173-1176.
  26. Zaleski, C. M.; Depperman, E. C.; Dendrinou-Samara, C., Alexiou, M.; Kampf, J. W.; Kessissoglou, D. P.; Kirk, M. L.; Pecoraro, V. L. “Metallacryptate Single-Molecule Magnets: The Effect of Lower Molecular Symmetry on Blocking Temperature,” J. Am. Chem. Soc. 2005, 127, 12862-12872.
  27. Zaleski, C. M.; Depperman, E. C.; Kampf, J. W.; Kirk, M. L.; Pecoraro, V. L. “Synthesis, Structure, and Magnetic Properties of a Large Lanthanide – Transition Metal Single-Molecule Magnet,” Angew. Chem. Int. Ed. 2004, 43, 3911-3914.
  28. Alexiou, M.; Zaleski, C. M.; Dendrinou-Samara, D.; Kampf, J. W.; Kessissoglou, D. P.; Pecoraro, V. L. “Trinuclear Mixed-Valent MnII/MnIV/MnII Complexes – Structure and Magnetic Behavior,” Z. Anorg. Allg. Chem.2003, 629, 2348-2355.
  29. Alexiou, M.; Dendrinou-Samara, C.; Karagianni, A.; Biswas, S.; Zaleski, C. M.; Kampf, J. W.; Yoder, D.; Penner-Hahn, J. E.; Pecoraro, V. L.; Kessissoglou, D. P. “Models for the Lower S States of Photosystem II: A Trinuclear Mixed-Valent MnII/MnIV/MnIIComplex,” Inorg. Chem. 2003, 42, 2185-2187.
  30. Dendrinou-Samara, C.; Zaleski, C. M.; Evagorou, A.; Kampf, J. W.; Pecoraro, V. L.; Kessissoglou, D. P. “A Cationic 24-MC-8 Manganese Cluster with Ring Metals Possessing Three Oxidation States [MnII4MnIII6MnIV2(m4-O)2(m3-O)4(m3-OH)4(m3-OCH3)2(pko)12](OH)(ClO4)3,”Chem. Comm. 2003, 2668-2669.
  31. Dendrinou-Samara, C.; Alexiou, M.; Zaleski, C. M.; Kampf, J. W.; Kirk, M. L.; Kessissoglou, D. P.; Pecoraro, V. L. “Synthesis and Magnetic Properties of a Metallacryptate that Behaves as a Single-Molecule Magnet,” Angew. Chem. Int. Ed. 2003, 42, 3763-3766.

Current Group Members

  • Ian Kuhn (Sophomore)
  • Jordan Travis (Junior)
  • Gerard Van Trieste (Junior)

Previous Group Members

  • Benjamin Klahr: B.S. Chemistry Shippensburg University
  • Matthew Smith: B.S. Chemistry Shippensburg University
  • Brian Emerich: B.S. Chemistry Shippensburg University
  • Phillip Pickett: B.S. Chemistry Shippensburg University
  • Katelyn Moore: B.S. Chemistry Shippensburg University
  • Jacob Herring: B.S. Chemistry Shippensburg University
  • Christopher Lenivy: B.S. Biology Shippensburg University
  • Brian Sirovetz: B.S. Chemistry Shippensburg University
  • Nicole Walters: B.S. Chemistry Shippensburg University
  • Michael Azar: B.S. Chemistry Shippensburg University
  • Collin Bender: B.S. Geoenvironmental Studies Shippensburg University
  • Jacob Lutter: B.S. Chemistry Shippensburg University
  • Benjamin Tigyer: B.S. Chemistry Shippensburg University
  • Kelcie Zegalia: B.S. Chemistry Shippensburg University
  • Amy Melhorn: B.S. Chemistry Shippensburg University
  • Kelsey Mengle: B.S. Chemistry Shippensburg University

Personal Interests

Outside of chemistry, Dr. Zaleski enjoys spending time with his family, cooking, Washington Nationals baseball, Ohio State Buckeyes football, and anything science fiction.