Monte Helm

Senior Scientist, Deputy Director of theCenter for Molecular Electrocatalysis

  • United States

  • 2753 Citations
  • 27 h-Index
19972019

Research output per year

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Research Output

  • 2753 Citations
  • 27 h-Index
  • 65 Article
  • 2 Review article
  • 1 Comment/debate
  • 1 Conference article
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Article
2019

Outer Coordination Sphere Proton Relay Base and Proximity Effects on Hydrogen Oxidation with Iron Electrocatalysts

Kumar, N., Darmon, J. M., Weiss, C. J., Helm, M., Raugei, S. & Bullock, R. M., Mar 25 2019, In : Organometallics. 38, 6, p. 1391-1396 6 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)
2017

Formation of Reversible Solid Electrolyte Interface on Graphite Surface from Concentrated Electrolytes

Lu, D., Tao, J., Yan, P., Henderson, W. A., Li, Q., Shao, Y., Helm, M. L., Borodin, O., Graff, G. L., Polzin, B., Wang, C. M., Engelhard, M., Zhang, J. G., De Yoreo, J. J., Liu, J. & Xiao, J., Mar 8 2017, In : Nano letters. 17, 3, p. 1602-1609 8 p.

Research output: Contribution to journalArticle

41 Citations (Scopus)

Understanding the Relationship between Kinetics and Thermodynamics in CO2 Hydrogenation Catalysis

Jeletic, M. S., Hulley, E. B., Helm, M. L., Mock, M. T., Appel, A. M., Wiedner, E. S. & Linehan, J. C., Sep 1 2017, In : ACS Catalysis. 7, 9, p. 6008-6017 10 p.

Research output: Contribution to journalArticle

16 Citations (Scopus)
2016

Controlling Proton Delivery through Catalyst Structural Dynamics

Cardenas, A. J. P., Ginovska, B., Kumar, N., Hou, J., Raugei, S., Helm, M. L., Appel, A. M., Bullock, R. M. & O'Hagan, M., Jan 1 2016, In : Angewandte Chemie - International Edition. 55, 43, p. 13509-13513 5 p.

Research output: Contribution to journalArticle

27 Citations (Scopus)
48 Citations (Scopus)

Investigating the role of chain and linker length on the catalytic activity of an H2 production catalyst containing a β-hairpin peptide

Reback, M. L., Ginovska, B., Buchko, G. W., Dutta, A., Priyadarshani, N., Kier, B. L., Helm, M. L., Raugei, S. & Shaw, W. J., Jul 2 2016, In : Journal of Coordination Chemistry. 69, 11-13, p. 1730-1747 18 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)
28 Citations (Scopus)
2015

Anion-tunable properties and electrochemical performance of functionalized ferrocene compounds

Cosimbescu, L., Wei, X., Vijayakumar, M., Xu, W., Helm, M. L., Burton, S. D., Sorensen, C. M., Liu, J., Sprenkle, V. & Wang, W., Sep 16 2015, In : Scientific reports. 5, 14117.

Research output: Contribution to journalArticle

37 Citations (Scopus)

Electrocatalytic hydrogen production by [Ni(7PPh2NH)2]2+: Removing the Distinction between endo- and exo-protonation sites

Brown, H. J. S., Wiese, S., Roberts, J. A. S., Bullock, R. M. & Helm, M. L., Apr 3 2015, In : ACS Catalysis. 5, 4, p. 2116-2123 8 p.

Research output: Contribution to journalArticle

14 Citations (Scopus)

Highly active electrolytes for rechargeable Mg batteries based on a [Mg2(μ-Cl)2]2+ cation complex in dimethoxyethane

Cheng, Y., Stolley, R. M., Han, K. S., Shao, Y., Arey, B. W., Washton, N. M., Mueller, K. T., Helm, M. L., Sprenkle, V. L., Liu, J. & Li, G., May 28 2015, In : Physical Chemistry Chemical Physics. 17, 20, p. 13307-13314 8 p.

Research output: Contribution to journalArticle

80 Citations (Scopus)

Increasing the rate of hydrogen oxidation without increasing the overpotential: A bio-inspired iron molecular electrocatalyst with an outer coordination sphere proton relay

Darmon, J. M., Kumar, N., Hulley, E. B., Weiss, C. J., Raugei, S., Bullock, R. M. & Helm, M. L., May 1 2015, In : Chemical Science. 6, 5, p. 2737-2745 9 p.

Research output: Contribution to journalArticle

28 Citations (Scopus)
84 Citations (Scopus)

Nickel complexes of a binucleating ligand derived from an SCS pincer

Peterson, S. M., Helm, M. L. & Appel, A. M., Jan 14 2015, In : Dalton Transactions. 44, 2, p. 747-752 6 p.

Research output: Contribution to journalArticle

10 Citations (Scopus)

Synthesis and characterization of a triphos ligand derivative and the corresponding PdII complexes

Miller, D. L., Boro, B. J., Grubel, K., Helm, M. & Appel, A., Dec 1 2015, In : European Journal of Inorganic Chemistry. 2015, 35, p. 5781-5785 5 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

The Role of Solvent and the Outer Coordination Sphere on H2 Oxidation Using [Ni(PCy2NPyz2)2]2+

Dutta, A., Lense, S., Roberts, J. A. S., Helm, M. L. & Shaw, W. J., Nov 1 2015, In : European Journal of Inorganic Chemistry. 2015, 31, p. 5218-5225 8 p.

Research output: Contribution to journalArticle

11 Citations (Scopus)
2014

A cobalt hydride catalyst for the hydrogenation of CO2: Pathways for catalysis and deactivation

Jeletic, M. S., Helm, M. L., Hulley, E. B., Mock, M. T., Appel, A. M. & Linehan, J. C., Oct 3 2014, In : ACS Catalysis. 4, 10, p. 3755-3762 8 p.

Research output: Contribution to journalArticle

68 Citations (Scopus)

A NiII-bis(diphosphine)-hydride complex containing proton relays - Structural characterization and electrocatalytic studies

Das, P., Stolley, R. M., Van Der Eide, E. F. & Helm, M. L., Sep 1 2014, In : European Journal of Inorganic Chemistry. 2014, 27, p. 4611-4618 8 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)

Catalytic oxidation of alcohol via nickel phosphine complexes with pendant amines

Weiss, C. J., Das, P., Miller, D. L., Helm, M. L. & Appel, A. M., Sep 5 2014, In : ACS Catalysis. 4, 9, p. 2951-2958 8 p.

Research output: Contribution to journalArticle

34 Citations (Scopus)

Comparison of [Ni(PPh2NPh2)2(CH3CN)]2+ and [Pd(PPh2NPh2)2]2+ as electrocatalysts for H2 production

Wiedner, E. S. & Helm, M. L., Sep 22 2014, In : Organometallics. 33, 18, p. 4617-4620 4 p.

Research output: Contribution to journalArticle

9 Citations (Scopus)

Controlling proton movement: Electrocatalytic oxidation of hydrogen by a nickel(ii) complex containing proton relays in the second and outer coordination spheres

Das, P., Ho, M. H., O'Hagan, M., Shaw, W. J., Morris Bullock, R., Raugei, S. & Helm, M. L., Feb 21 2014, In : Dalton Transactions. 43, 7, p. 2744-2754 11 p.

Research output: Contribution to journalArticle

24 Citations (Scopus)

Determining the overpotential for a molecular electrocatalyst

Appel, A. M. & Helm, M. L., Feb 7 2014, In : ACS Catalysis. 4, 2, p. 630-633 4 p.

Research output: Contribution to journalArticle

159 Citations (Scopus)
12 Citations (Scopus)

Electrocatalytic H2 production with a turnover frequency >107 s-1: The medium provides an increase in rate but not overpotential

Hou, J., Fang, M., Cardenas, A. J. P., Shaw, W. J., Helm, M. L., Bullock, R. M., Roberts, J. A. S. & O'Hagan, M., Dec 1 2014, In : Energy and Environmental Science. 7, 12, p. 4013-4017 5 p.

Research output: Contribution to journalArticle

36 Citations (Scopus)

Electrodeposition from acidic solutions of nickel bis(benzenedithiolate) produces a hydrogen-evolving Ni-S film on glassy carbon

Fang, M., Engelhard, M. H., Zhu, Z., Helm, M. L. & Roberts, J. A. S., Jan 3 2014, In : ACS Catalysis. 4, 1, p. 90-98 9 p.

Research output: Contribution to journalArticle

48 Citations (Scopus)
28 Citations (Scopus)

Iron complexes for the electrocatalytic oxidation of hydrogen: Tuning primary and secondary coordination spheres

Darmon, J. M., Raugei, S., Liu, T., Hulley, E. B., Weiss, C. J., Bullock, R. M. & Helm, M. L., Apr 4 2014, In : ACS Catalysis. 4, 4, p. 1246-1260 15 p.

Research output: Contribution to journalArticle

36 Citations (Scopus)
174 Citations (Scopus)

Protonation studies of a tungsten dinitrogen complex supported by a diphosphine ligand containing a pendant amine

Weiss, C. J., Egbert, J. D., Chen, S., Helm, M. L., Bullock, R. M. & Mock, M. T., May 12 2014, In : Organometallics. 33, 9, p. 2189-2200 12 p.

Research output: Contribution to journalArticle

15 Citations (Scopus)

Solvent and electrolyte effects on Ni(PR2NR′2)2-catalyzed electrochemical oxidation of hydrogen

Stolley, R. M., Darmon, J. M. & Helm, M. L., Mar 11 2014, In : Chemical Communications. 50, 28, p. 3681-3684 4 p.

Research output: Contribution to journalArticle

17 Citations (Scopus)
2013

Conformational dynamics and proton relay positioning in nickel catalysts for hydrogen production and oxidation

Franz, J. A., O'Hagan, M., Ho, M. H., Liu, T., Helm, M. L., Lense, S., Dubois, D. L., Shaw, W. J., Appel, A. M., Raugei, S. & Bullock, R. M., Dec 9 2013, In : Organometallics. 32, 23, p. 7034-7042 9 p.

Research output: Contribution to journalArticle

25 Citations (Scopus)

High catalytic rates for hydrogen production using nickel electrocatalysts with seven-membered cyclic diphosphine ligands containing one pendant amine

Stewart, M. P., Ho, M. H., Wiese, S., Lindstrom, M. L., Thogerson, C. E., Raugei, S., Bullock, R. M. & Helm, M. L., Apr 24 2013, In : Journal of the American Chemical Society. 135, 16, p. 6033-6046 14 p.

Research output: Contribution to journalArticle

99 Citations (Scopus)

Hydrogen production using nickel electrocatalysts with pendant amines: Ligand effects on rates and overpotentials

Wiese, S., Kilgore, U. J., Ho, M. H., Raugei, S., Dubois, D. L., Bullock, R. M. & Helm, M. L., Nov 1 2013, In : ACS Catalysis. 3, 11, p. 2527-2535 9 p.

Research output: Contribution to journalArticle

47 Citations (Scopus)

Production of H2 at fast rates using a nickel electrocatalyst in water–acetonitrile solutions

Hoffert, W. A., Roberts, J. A. S., Bullock, R. M. & Helm, M. L., Aug 8 2013, In : Chemical Communications. 49, 71, p. 7767-7769 3 p.

Research output: Contribution to journalArticle

54 Citations (Scopus)

Structural and spectroscopic characterization of 17- and 18-electron piano-stool complexes of chromium. Thermochemical analyses of weak Cr-H bonds

Van Der Eide, E. F., Helm, M. L., Walter, E. D. & Bullock, R. M., Feb 4 2013, In : Inorganic Chemistry. 52, 3, p. 1591-1603 13 p.

Research output: Contribution to journalArticle

15 Citations (Scopus)
2012

Biologically inspired phosphino platinum complexes

Jain, A., Helm, M. L., Linehan, J. C., Dubois, D. L. & Shaw, W. J., Aug 1 2012, In : Inorganic Chemistry Communications. 22, p. 65-67 3 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Group 10 complexes containing phosphinomethylamine ligands: Synthesis, structural analysis and electrochemical studies

Waggoner, N. W., Spreer, L. S., Boro, B. J., Dubois, D. L. & Helm, M. L., Jan 15 2012, In : Inorganica Chimica Acta. 380, 1, p. 14-21 8 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Investigating the role of the outer-coordination sphere in [Ni(P Ph 2N Ph-R 2) 2] 2+ hydrogenase mimics

Jain, A., Reback, M. L., Lindstrom, M. L., Thogerson, C. E., Helm, M. L., Appel, A. M. & Shaw, W. J., Jun 18 2012, In : Inorganic Chemistry. 51, 12, p. 6592-6602 11 p.

Research output: Contribution to journalArticle

29 Citations (Scopus)

Stabilization of nickel complexes with Ni 0H-N bonding interactions using sterically demanding cyclic diphosphine ligands

Wiedner, E. S., Yang, J. Y., Chen, S., Raugei, S., Dougherty, W. G., Kassel, W. S., Helm, M. L., Bullock, R. M., DuBois, M. R. & DuBois, D. L., Jan 9 2012, In : Organometallics. 31, 1, p. 144-156 13 p.

Research output: Contribution to journalArticle

57 Citations (Scopus)

Synthesis and reactivity of molybdenum and tungsten bis(dinitrogen) complexes supported by diphosphine chelates containing pendant amines

Weiss, C. J., Groves, A. N., Mock, M. T., Dougherty, W. G., Kassel, W. S., Helm, M. L., Dubois, D. L. & Bullock, R. M., Apr 21 2012, In : Dalton Transactions. 41, 15, p. 4517-4529 13 p.

Research output: Contribution to journalArticle

22 Citations (Scopus)
2011

A synthetic nickel electrocatalyst with a turnover frequency above 100,000 s-1 for H2 production

Helm, M. L., Stewart, M. P., Bullock, R. M., DuBois, M. R. & DuBois, D. L., Aug 12 2011, In : Science. 333, 6044, p. 863-866 4 p.

Research output: Contribution to journalArticle

780 Citations (Scopus)

Electrocatalytic oxidation of formate by [Ni(PR 2NR′2)2(CH3CN)] 2+ complexes

Galan, B. R., Schöffel, J., Linehan, J. C., Seu, C., Appel, A. M., Roberts, J. A. S., Helm, M. L., Kilgore, U. J., Yang, J. Y., Dubois, D. L. & Kubiak, C. P., Aug 17 2011, In : Journal of the American Chemical Society. 133, 32, p. 12767-12779 13 p.

Research output: Contribution to journalArticle

79 Citations (Scopus)

Studies of a series of [Ni(PR2NPh 2)2(CH3CN)]2+ complexes as electrocatalysts for H2 production: Substituent variation at the phosphorus atom of the P2N2 ligand

Kilgore, U. J., Stewart, M. P., Helm, M. L., Dougherty, W. G., Kassel, W. S., Dubois, M. R., Dubois, D. L. & Bullock, R. M., Nov 7 2011, In : Inorganic Chemistry. 50, 21, p. 10908-10918 11 p.

Research output: Contribution to journalArticle

111 Citations (Scopus)
2010

Synthesis, characterization and crystal structure of (cis-P,P′-diphenyl-1,4-diphospha-cyclohexane)molybdenum(0)tetracarbonyl

Carroll, G. M., Miller, S. M. & Helm, M. L., Apr 1 2010, In : Inorganic Chemistry Communications. 13, 4, p. 534-536 3 p.

Research output: Contribution to journalArticle

Synthesis of 1,4,7-triphenyl-1,4,7-triphosphacyclononane: The first metal-free synthesis of a [9]-aneP3R3 ring

Lowry, D. J. & Helm, M. L., Jun 7 2010, In : Inorganic Chemistry. 49, 11, p. 4732-4734 3 p.

Research output: Contribution to journalArticle

12 Citations (Scopus)
2009
1 Citation (Scopus)
2 Citations (Scopus)

Group 9 half-sandwich complexes containing the unique P,P′-diphenyl-1,4-diphospha-cyclohexane ligand: Synthesis, X-ray structure analyses and spectroscopic studies

Sussman, J. E., Morey, T. S., Miller, S. M. & Helm, M. L., Oct 1 2009, In : Journal of Organometallic Chemistry. 694, 21, p. 3506-3510 5 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)
2008

Group 6 metal carbonyl complexes of a family of bulky phosphines: Spectroscopic and structural studies of chromium(0)-, molybdenum(0)- and tungsten(0)-pentacarbonylsilylphosphines

Rooney, C. P., Wade, J. L., Hinkle, A. C., Stolley, R. M., Miller, S. M. & Helm, M. L., Dec 1 2008, In : Main Group Chemistry. 7, 2, p. 155-165 11 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)
2007

Bis(cis-1,4-diphenyl-1,4-diphosphacyclo-hexane-k2 P,P′)platinum(II) bis-(tetra-fluorido-borate)

Morey, T. S., Miller, S. M. & Helm, M. L., Jun 6 2007, In : Acta Crystallographica Section E: Structure Reports Online. 63, 7, p. m1983

Research output: Contribution to journalArticle

3 Citations (Scopus)

Lithium bis(2-phenylphosphidoethyl)phenylphosphine: A reactive phosphorus ntermediate

Mason, L. J., Moore, A. J., Carr, A. & Helm, M. L., Sep 26 2007, In : Heteroatom Chemistry. 18, 6, p. 675-678 4 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)