Overview

David Eichhorn is the Interim Dean of Fairmount College and a professor of chemistry. He started his career as an assistant professor of chemistry at Wichita State in 1996, with promotions to associate professor in 2002 and professor in 2009. He has served as associate dean of the graduate school (2005-2008), chair of the department of chemistry (2008-2018), and Associate Dean for Faculty Development and Research (2019-2024). Dr. Eichhorn has authored more than 60 papers in bioinorganic and transition metal chemistry.

Originally from the Maryland suburbs of Washington, DC, Dr. Eichhorn earned a Ph.D. in inorganic chemistry from the University of California, Berkeley, in 1992 and a bachelor of arts in chemistry from Harvard University in 1986. Before coming to Wichita State, he completed four years of postdoctoral research at Northwestern University.

Information

Academic Interests and Expertise

Metalloenzyme active sites, Transition metal scorpionate complexes

Areas of Teaching Interest

Inorganic Chemistry

Publications

64. Kromer, J.R.; Oberley, A.J.; Kadel, L.R.; Vonarx, D.; McNeil, J.; Haskin, J.; Steinert, R.M.; Mitchell-Koch, K.R.; Moore, C.E.; Eichhorn, D.M.; “Synthesis and X-ray crystal structures of mononuclear and multinuclear metal complexes of 3-substituted 4-cyanopyrazole ligands”; Polyhedron 2023, 243, 116546. DOI/10.1016/j.poly.2023.116546

63. Salerno, E.V.; Kadel, L.R.; Eichhorn, D.M.; “Ethanol(nitrato)[tris(4-cyano-3-phenyl-1H-pyrazol-1-yl)hydroboratonickel(II)”; IUCrData 2021, 6, x210690. DOI/10.1107/S2414314621006908

62. Freige, M.J.; Senaratne, N.K.; Eichhorn, D.M.; “(2-{[2-(Dimethylamino)ethyl]iminomethyl}benzenethiolato-κ3N,N’,S )(4-methoxybenzenethiolato-κS)nickel(II)” ; IUCrData 2018, 3, x181167. DOI/10.1107/S2414314618011677

61. Oberley, A.J.; Kadel, L.R.; Senaratne, N.K.; Eichhorn, D.M.; “Tetraethylammonium (acetonitrile)trichloridopalladate(II)”; IUCrData 2018, 3, x180750. DOI/10.1107/S2414314618007502

60. Senaratne, N.K.; Mwania, T.M.; Moore, C.E.; Eichhorn, D.M.; “Ni complexes of N2S ligands with amine/imine and amine/amide donors with relevance to the active site of Ni Superoxide Dismutase”; Inorg. Chim. Acta 2018, 476, 27-37. DOI/10.1016/j.ica.2018.02.006

59. Meloccaro, A.; Zimmerman, J.R.; Eichhorn, D.M.; “Bis{2-[({[3-(dimethyl-azaniumyl)propyl]imino}-methyl)phenyl]sulfanido}nickel(II) tetraphenylborate”; IUCrData 2017, 2, x171067. DOI/10.1107/S2414314617010677

58. Rillema, D.P.; KomReddy, V.; Senaratne, N.K.; Eichhorn, D.M.; “Methyl 5-methylpyrazine-2-carboxylate”; IUCrData 2017, 2, x170997. DOI/10.1107/S241431461700997X

57. Rillema, D.P.; KomReddy, V.; Senaratne, N.K.; Eichhorn, D.M.; “(2,2′-Bi­pyrazine-κ2N1,N1′)[1,2-bis­­(di­phenyl­phosphan­yl)methane-κP]tri­carbonyl­rhenium(I) tri­fluoro­methane­sulfonate monohydrate”; IUCrData 2017, 2, x170935. DOI/10.1107/S241431461700935X

56. Panja, A; Jana, N.C.; Bauzá, A; Adak, S.; Eichhorn, D.M.; Frontera, A.; “Introducing supramolecular interactions into robust bis(tetrabromocatecholate) chelated manganese(III) systems and biomimetic catalytic activity”; Chem. Select, 2017, 2, 2094-2105. DOI/10.1002/slct.201602007

55. Kadel, L.R.; Kromer, J.R.; Moore, C.E.; Eichhorn, D.M.; “New trisubstituted cyanopyrazoles and cyanoscorpionates”; Polyhedron 2017,125, 206-218. DOI /10.1016/j.poly.2016.12.016

54. Kadel, L.R.; Bullinger, J.C.; Baum, Robert R.; Moore, C.E.; Tierney, D.L.; Eichhorn, D.M.; “Cyanoscorpionate Ligands: Agostic Interactions in a Series of Metal Complexes Containing the Tris(4-cyano-3-phenylpyrazolyl)borate and Bis(4-cyano-3-phenylpyrazolyl)borate Ligands”; Eur. J. Inorg. Chem. 2016 2543-2551. DOI 10.1002/ejic.201501268

53. Sullivan, M.T.; Senaratne, N.K.; Eichhorn, D.M.; “Synthesis and X-ray Crystallographic Characterization of [In(tsalen)(OAc)] (tsalen = N,N'-Ethylenebis(thiosalicylideneimine))”; Polyhedron 2016, 114, 152-155. DOI 10.1016/j.poly.2015.11.026

52. Panja, A.; Jana, N.C.; Patra, M.; Brandão, P.; Moore, C.E.; Eichhorn, D.M.; Frontera, A; “Valence tautomerism induced nucleophilic ipso substitution in a coordinated tetrabromocatecholate ligand and diverse catalytic activity mimicking the function of phenoxazinone synthase”; J. Mol. Cat. A 2016, 412, 56-66. DOI 10.1016/j.molcata.2015.11.008

51. Panja, A.; Eichhorn, D.M.; “A linear S-bridged trinuclear cobalt(III) complex with 2-aminobenzenethiol: synthesis, crystal structure, and spectroscopic characterization”; J. Coord. Chem. 2013, 66, 3037-3044. DOI 10.1080/00958972.2013.823486

50. Lai, H.; Dou, D.; Aravapalli, S.; Teramoto, T.; Lushington, G.H.; Mwania, T.M.; Alliston, K.R.; Eichhorn, D.M.; Padmanabhan, R.; Groutas, W.C.; “Design, Synthesis and Characterization of Novel 1,2-Benzisothiazol-3(2H)-one and 1,3,4-Oxadiazole Hybrid Derivatives: Potent Inhibitors of Dengue and West Nile Virus NS2B/NS3 Proteases” Bioorganic & Medicinal Chemistry 2013, 21, 102-113. DOI 10.1016/j.bmc.2012.10.058

49. Panja, A.; Eichhorn, D.M.; “Mono- and di-nuclear nickel(II) complexes with mixed N/S-donor ligands: Syntheses, structures and physical properties”; Inorg. Chim. Acta 2012, 391, 88-92. DOI 10.1016/j.ica.2012.04.042

48. Johnson, D.M.; Eichhorn, D.M.; Moore, C.E.; Mwania, T.M.; Zhao, N.; Cyano-substituted bispyrazolylborates thallium(I) complexes”; J. Chem. Crystallog. 2012, 42, 746-751. DOI 10.1007/s10870-012-0310-0

47. Zimmerman, J.R.; Smucker, B.W.; Dain, R.P.; VanStipdonk, M.J.; Eichhorn, D.M.; “Tridentate N2S ligand from 2,2’-dithiodibenzaldehyde and N,N-dimethylethylenediamine: Synthesis, structure, and characterization of a Ni(II) complex with relevance to Ni Superoxide Dismutase”; Inorg. Chim. Acta 2011,373 54-61. DOI 10.1016/j.ica.2011.03.052

46. Andra, K.K.; Bullinger, J.C.; Bann, J.G.; Eichhorn, D.M.; 2-Fluoro-L-Histidine; Acta Cryst. 2010, E66, o2713. DOI 10.1107/S1600536810038663

45. Dou, D.; He, G.; Lai, Z.; Wei, L.; Alliston, K.R.; Lushington, G.H.; Eichhorn, D.M.; Groutas, W.C.; “Utilization of the 1,2,3,5-thiatriazolidin-3-one 1,1-Dioxide Scaffold in the Design of Potential Inhibitors of Human Leukocyte Proteinase 3; Bioorg. Med. Chem. 2010, 18, 1093-1102. DOI 10.1016/j.bmc.2009.12.057

44. Eichhorn, D.M.; “Analysis of ‘Janus Scorpionates: Supramolecular Tectons for the Directed Assembly of Hard–Soft Alkali Metallopolymer Chains’ and ‘A Second-Generation Janus Scorpionate Ligand: Controlling Coordination Modes in Iron(II) Complexes’”; Chemtracts Organic Chemistry 2009, 22, 135-140.

43. Bullinger, J.C.; Eichhorn, D.M.; “Cyanoscorpionates: Co(II), Mn(II), and Ni(II) Complexes Coordinated Only Through the Cyano Group”; Inorg. Chim. Acta, 2009, 362, 4510-4516. DOI 10.1016/j.ica.2009.05.012

42. Panja, A.; Eichhorn, D.M.; “Synthesis and Characterization of Tetrahedrally and Octahedrally Coordinated Mixed Valence Cobalt(II,III) Complex with Thiosemicarbazone Based Ligand”; J. Coord. Chem. 2009, 62, 2600-2609. DOI 10.1080/00958970902915574

41. Dou, D.; Talaty, E.R.; Moore, C.; Bullinger, J.; Eichhorn, D.M.; Groutas, W.C.; “Formation of an Unusual Dimeric Product in the Reaction of a 1,2,5 –Thiadiazolidine 1,1 Dioxide-Derived Thioether with Sulfuryl Chloride”; J. Heterocyclic Chem. 2009, 46, 669 – 673. DOI 10.1002/jhet.136

40. Burns, D.H.; Meece, F.A.; Moore, C.E.; Eichhorn, D.M. “Two similar dibenzo cyclic ethers with dissimilar conformations”; Acta Crystallogr. 2009, C65, o27-o30. DOI 10.1107/S0108270108040882

39. Panja, A.; Campana, C.; Leavitt, C.; Van Stipdonk, M.J.; Eichhorn, D.M. “Iron and Cobalt Complexes of 2,6-Diacetylpyridine-bis(R-thiosemicarbazone) (R=H, phenyl) Showing Unprecedented Ligand Deviation from Planarity”; Inorg. Chim. Acta 2009, 362, 1348-1354. DOI 10.1016/j.jca.2008.06.031

38. Zhao, N.; Bullinger, J.C.; Van Stipdonk, M.J.; Stern, C.L.; Eichhorn, D.M.; “Cyanoscorpionates – Synthesis and Crystallographic Characterization of 1-D Cu(I) Coordination Polymers”; Inorg. Chem. 2008, 47, 5945-5950. DOI: 10.1021/ic8003307

37. Zhao, N.; Van Stipdonk, M.J.; Bauer, C.; Campana, C.; Eichhorn, D.M. “Sandwich Compounds of Cyanotrispyrazolylborates – Complexation-induced Ligand Isomerization”; Inorg. Chem. 2007, 46, 8662-8667. DOI: 10.1021/ic700628b

36. Smucker, B.W.; Van Stipdonk, M.J.; Eichhorn, D.M. “Incorporation of Thiolate Donation Using 2,2'-Dithiodibenzaldehyde: Complexes of a Pentadentate N2S3 Ligand With Relevance to the Active Site of Co Nitrile Hydratase”; J. Inorg. Biochem., 2007, 101, 1537-1542. DOI 10.1016/j.inorgbio.2007.06.042

35. Zhao, N.; Van Stipdonk, M.J.; Eichhorn, D.M. “Syntheses and Crystal Structures of 3-tert-butyl-4-cyano Pyrazole and its Complexes with Cobalt(II), Manganese(II), and Copper(II)”; Polyhedron, 2007, 26, 2449-2454. DOI 10.1016/j.poly.2006.12.035

34. Kirgan, R.; Moore, C.; Eichhorn, D.M.; Rillema, D.P. “4-Acetylresorcinol”; Acta Cryst. 2007, E63, o4252. DOI 10.1107/S1600536807047794

33. Zhao, N.; Eichhorn, D.M. “Dichlorobis(3,5-dimethylpyrazole)copper(II)” Acta Cryst. 2005, E61, m822-m823. DOI 10.1107/S1600536805009621

32. Villegas, J.M.; Stoyanov, S.R.; Moore, C.E.; Eichhorn, D.M.; Rillema, D.P. “fac-Tricarbonyl(2,9-dimethyl-1,10-phenanthroline)(2,6-dimethylphenyl-isocyanide)rhenium(I) hexafluorophosphate” Acta Cryst. 2005, E61, m533-m534. DOI 10.1107/S1600536805004678

31. Zhong, J.; Lai, Z.; Groutas, C. S.; Wong, T.; Gan, X.; Alliston, K. R.; Eichhorn, D.; Hoidal, J. R.; Groutas, W. C. “Serendipitous Discovery of an Unexpected Rearrangement Leads to Two New Classes of Potential Protease Inhibitors” Bioorg. Med. Chem. 2004, 12, 6249-6254. DOI 10.1016/j.bmc.2004.08.044

30. Oshin, K.; Landis, A. M.; Smucker, B. W.; Eichhorn, D. M.; Rillema, D. P. “fac-Bipyridyltricarbonyl(pyridine)rhenium(I) trifluoromethanesulfonate” Acta Cryst. 2004, E60, m1126-m1127. DOI 10.1107/S1600536804015016

29. Eller, C.; Smucker, B. W.; Kirgan, R.; Eichhorn, D. M.; Rillema, D. P. "5,5'-Dimethyl-2,2'-bipyrazine"; Acta Cryst. 2004, E60, o433-o434. DOI 10.1107/S1600536804000881

28. Siemer, C. J.; VanStipdonk, M. J.; Kahol, P. K.; Eichhorn, D. M.; "A Coordination Polymer from a Cyanoscorpionate Complex"; Polyhedron 2004, 23, 235-238. DOI 10.1016/j.poly.2003.11.008

27. Eichhorn, D. M.; Goswami, N.; "New Synthetic Techniques for the Incorporation of Thiolate Donation in Transition Metal Complexes"; Comm. Inorg. Chem. 2003, 24, 1-13. DOI: 10.1080/02603590390228164

26. Vongtragool, S.; Gorshunov, B.; Dressel, M.; Krzystek, J.; Eichhorn, D. M.; Telser, J.; "Direct Observation of Fine Structure Transitions in a Paramagnetic Nickel(II) Complex Using Far-Infrared Magnetic Spectroscopy: A New Method for Studying High-Spin Transition Metal Complexes"; Inorg Chem. 2003, 42, 1788-1790. DOI: 10.1021/ic030013o

25. Gu, W.; Jacquamet, L.; Patil, D. S.; Wang, H.-X.; Evans, D. J.; Smith, M. C.; Millar, M.; Koch, S.; Eichhorn, D. M.; Latimer, M.; Cramer, S. P.; "Refinement of the Nickel Site Structure in Desulfovibrio gigas Hydrogenase Using Range-extended EXAFS Spectroscopy"; J. Inorg. Biochem. 2003, 93, 41-51. DOI: 10.1016/S0162-0134(02)00494-4

24. Goswami, N.; Van Stipdonk, M. J.; Eichhorn, D. M.; "Formation of an ethylene-bridged bis(benzisothiazole) dication by oxidative decomplexation of Ni(tsalen) with FeCl3"; Inorg. Chem. Commun. 2003, 6, 86-89. DOI: 10.1016/S1387-7003(02)00693-7

23. Siemer, C. J.; Meece, F. A.; Armstrong, W. H.; Eichhorn, D. M.; "Iron, Copper, and Cobalt Complexes of Hydrotris(3-phenylpyrazolyl)borate and Dihydrobis(3-phenylpyrazolyl)borate. Synthesis and X-ray Crystallographic Characterization"; Polyhedron 2001, 20, 2637-2646. DOI 10.1016/S0277-5387(01)00871-3

22. Siemer, C. J.; Goswami, N.; Van Stipdonk, M. J.; Eichhorn, D. M.; " Dihydrobis(4-cyano-3-phenylpyrazol-1-yl)borate: Homoleptic Mononuclear Cobalt(II) and Copper(II) Complexes With a Cyano-substituted Scorpionate Ligand."; Inorg. Chem., 2001 40, 4081-4084. DOI: 10.1021/ic010316n

21. McCormick, B. J.; Siemer, C.; Afroz, F.; Wasson, J. R.; Eichhorn, D. M.; Scott, B.; Shah, S.; Noffsinger, K.; Kahol, P. K.; "The Copper Acetylenedicarboxylate System" Synthetic Metals, 2001, 120 , 969-970. DOI: 10.1016/S0379-6779(00)00745-1

20. Shan, B.-Z.; Zhao, Q.; Goswami, N.; Eichhorn, D. M.; Rillema, D. P.; "Structure, NMR, and Other Physical and Photophysical Properties of Ruthenium Complexes Containing the 3,3'-Dicarboxyl-2,2'-Bipyridine Ligand"; Coord. Chem. Rev.; 2001, 211, 117-144. DOI: 10.1016/S0010-8545(00)00286-1

19. Xue, W.-M.; Goswami, N.; Eichhorn, D. M.; Orizondo, P. L.; Rillema, D. P.; "Synthesis and Luminescence Properties of a Nonsymmetric Ligand-Bridged ReI-ReI Chromophore" Inorg. Chem. 2000, 39, 4460-4467. DOI: 10.1021/ic000134d

18. Burns, D. H.; Chan, H.-K.; Miller, J. D.; Jayne, C. L; Eichhorn, D. M. " Synthesis, Modification, and Characterization of a Family of Homologs of exo-Calix[4]arene: exo-[n.m.n.m]Metacyclophanes, n,m≥3"; J. Org. Chem., 2000, 65, 5185-5196. DOI: 10.1021/jo0003044

17. Goswami, N.; Eichhorn, D. M.; "Incorporation of Thiolate Donation Using 2,2'-Dithiodibenzaldehyde: Synthesis of Ni, Fe, and Cu Complexes. Crystal Structures of [M(tsalen)] (tsalen = N,N'-Ethylenebis(thiosalicylidene)imine); M = Cu, Ni) Showing a Tetrahedral Distortion of Cu(tsalen)"Inorg. Chim. Acta , 2000,303, 272-277. DOI 10.1016/S0020-1693(00)00047-5

16. Depriest, J.; Zheng, G. Y.; Goswami, N.; Eichhorn, D. M.; Woods, C.; Rillema, D. P.; "Structure, Physical and Photophysical Properties of Platinum(II) Complexes Containing Bidentate Aromatic and Bis(diphenylphosphino)methane as Ligands"; Inorg. Chem. 2000, 39, 1955-1963. DOI: 10.1021/ic991306d

15. Deviprasad, G. R.; Eichhorn, D. M.; D'Souza, F. "Crystal Structure and Intermolecular Coordination Behavior of a Porphyrin Bearing Hydroquinone Receptor, meso-Mono(hydroquinonyl)triphenylporphyrinatozinc" J. Chem. Crystallogr. 1999 29, 849-853. DOI: 10.1023/A:1009516424660

14. Goswami, N.; Eichhorn, D. M.; "A New Method for Incorporating Thiolate Donors into a Metal Coordination Sphere. Synthesis and Crystal Structures of the First Nickel Complexes of an N3S Ligand" Inorg. Chem. 1999, 36, 4329-4333. DOI: 10.1021/ic990492k

13. Wang, Y.; Eichhorn, D. M.; Goswami, N.; Zhao, Q.; Rillema, D. P.; "Crystal Structure and Physical Properties of a Ruthenium(II) Bipyridine Complex" J. Chem. Crystallog. 1999, 29, 277-281. DOI: 10.1023/A:1009513616056

12. Huyett, J.E.; Choudhury, S.B.; Eichhorn, D. M.; Bryngelson, P.A.; Maroney, M.J.; Hoffman, B.M.; "Pulsed ENDOR and ESEEM Study of [Bis(maleonitriledithiolato)nickel]-: An Investigation into the Ligand Electronic Structure" Inorg. Chem. 1998, 37, 1361-1367. DOI: 10.1021/ic9703639

11. Andersen, K.; Andersen, M.; Anderson, O. P.; Baum, S.; Baumann, T. G.; Beall, L. S.; Broderick, W. E.; Cook, A. S.; Eichhorn, D. M.; Goldberg, D.; Hope, H.; Jarrell, W.; Lange, S. J.; McCubbin, Q. J.; Mani, N. S.; Miller, T.; Garrido Montalban, A.; Rodriquez-Morgade, M. S.; Lee, S.; Nie, H.; Olmstead, M. M.; Sabat, M.; Sibert, J. W.; Stern, C.; White, A. J. P.; Williams, D. B. G.; Williams, D. J.; Barrett, A. G. M.; Hoffman, B. M.; “Star Porphyrazines and Related Multimetallic Macrocycles” J. Heterocyclic Chem. 1998, 35, 1013-1042. DOI: 10.1002/jhet.5570350503

10. Eichhorn, D. M.; Yang, S.; Jarrell, W.; Baumann, T.; Beall, L.S.; White, A.J.P.; Williams, D.J.; Barrett, A.G.M.; Hoffman, B.M.; “[60]Fullerene and TCNQ Donor-Acceptor Crystals of Octakis(dimethylamino)porphyrazine” J. Chem. Soc., Chem. Commun.1995, 1703-1704.

9. Broderick, W.E.; Eichhorn, D. M.; Liu, X.; Toscano, P.M.; Owen, S.; Hoffman, B.M.; "Three Phases of [Fe(C5Me5)2]+[TCNQ]-: Ferromagnetism in a New Structural Phase" J. Am. Chem. Soc. 1995, 117, 3641-3642. DOI: 10.1021/ja00117a045

8. Broderick, W.E.; Eichhorn, D. M.; Liu, X., Owens, S.; Toscano, P.M.; Hoffman, B.M.; "Ferromagnetism in a New Structural Phase of [Fe(C5Me5)2][TCNQ]" Mol. Cryst. Liq. Cryst. 1995, 273, 17-20. DOI 10.1080/10587259508031836

7. Eichhorn, D. M.; Telser, J.; Stern, C.L.; Hoffman, B.M.; "Influence of Zero-Field Splitting and State Mixing on Ferromagnetic Exchange in the Integrated-Stack Charge-Transfer Salt [Cp*2Fe][Co(HMPA-B)]" Inorg. Chem. 1994, 33, 3533-3537. DOI: 10.1021/ ic00094a016

6. Eichhorn, D. M.; Skee, D.C.; Broderick, W.E.; Hoffman, B.M.; "Ferromagnetism in Decamethylchromocenium tetracyanoethylenide" Inorg. Chem. 1993, 32, 491-492. DOI: 10.1021/ ic00056a026

5. Eichhorn, D. M., Armstrong, W.H.; "A Remarkably Stable Mononuclear Manganese(III) Hydroxide Complex: [L1MnIII(OH)] (L1=bis(2-hydroxy, 5-nitrobenzyliminopropyl)­methylamine)" J. Chem. Soc., Chem. Commun. 1992, 85-87.

4. Cramer, S.P.; deGroot, F.M.F.; Ma, Y.; Chen, C.T.; Sette, F.; Kipke, C.A.; Eichhorn, D. M.; Chan, M.K.; Armstrong, W.H.; Fuggle, J.C. "Ligand Field Strengths and Oxidation States from Manganese L-Edge Spectroscopy" J. Am. Chem. Soc. 1991, 113, 7937-7940. 10.1021/ja00021a018

3. Chambron, J.-C.; Eichhorn, D. M.; Franczyk, T.S.; Stearns, D.M. "Structure of [Hydro(trispyrazolylborato)-triphenylphosphinoiodomethyl] Rhodium(III)"Acta Crystallogr., 1991, C47, 1732-1734. DOI: 10.1107/S0108270191000227

2. Low, D.W.; Eichhorn, D. M.; Draganescu, A.; Armstrong, W.H. "Structure and Properties of [Mn9O7(O2CC6H5)13py)2]: A Novel Nonanuclear Mn(III) Oxo-Carboxylate Species Synthesized by Employing an Oxygen Atom Transfer Agent" Inorg. Chem., 1991, 30, 877-878. DOI: 10.1021/ ic00005a001

1. Eichhorn, D. M.; Armstrong, W.H. "M{(Hydrotris(3-phenyl-pyrazolyl)borate}2: Sterically Encumbered Iron(II) and Manganese(II) Complexes " Inorg. Chem. 1990, 29, 3607-3612. DOI: 10.1021/ic00343a058