ORCID: 0000-0003-3121-3917

  1. (Electro)chemical N2 Splitting by a Molybdenum Complex with an Anionic PNP Pincer-type Ligand
    N. Ostermann, N. Rotthowe, A. C. Stückl, I. Siewert*, ACS Org. Inorg. Au 2024, accepted; DOI: 10.1021/acsorginorgau.3c00056.
    (Special Issue: Electrochemical Explorations in Organic & Inorganic Chemistry)

  2. Mechanistic Analysis Reveals Key Role of Interchalcogen Multicatalysis in Photo-Aerobic 3-PyrrolineSyntheses by Aza-Wacker Cyclizations
    S. Graf+, H. Pesch+, T. Appleson, T. Lei, A. Breder*, I. Siewert*, ChemSusChem 2024e202301518.
    (+ equal contribution)

  3. A Nickel Complex with a Proton-Responsive PNP Pincer-Type Ligand as a Proton-Coupled Electron Transfer Reagent
    J. Mukherjee, N. Ostermann, X. Aniban, I. Safianova, N. Rotthowe, R. Mata*, I. Siewert*, Organometallics 2023, 42, 3258-3265.

  4. Accumulation of Four Electrons on a Terphenyl (Bis)disulfide;
    L. Schmid, I. Fokin, M. Brändlin, D. Wagner, I. Siewert*, O. S. Wenger*, Chem. Eur. J. 2022e202202386.

  5. Making and breaking of chemical bonds in single nanoconfined molecules;
    O. Bunjes, D. Hedman, A. Rittmeier, L. A. Paul, I. Siewert, F. Ding, M. Wenderoth*, Sci. Adv. 20228eabq7776.

  6. Electrochemical Ammonia Synthesis: Two catalysts are better than one;
    I. Siewert*, Nat. Energy 2022, DOI: 10.1038/s41560-022-01123-5.

  7. Luminescent Iridium Complexes with a Sulfurated Bipyridine Ligand: PCET Thermochemistry of the Disulfide Unit and Photophysical Properties;
    M. Oelschlegel, S.-A. Hua, L. Schmid, P. Marquetand, A. Bäck, J.-H. Borter, J. Lücken, S. Dechert, O. S. Wenger, I. Siewert, D. Schwarzer*, L González*, F. Meyer*, Inorg. Chem. 2022, 6113944-13955.

  8. Neutral Formazan Ligands Bound to the fac-(CO)3Re(I) Fragment: Structural, Spectroscopic, and Computational Studies
    L. Capulín Flores, L. A. Paul, I. Siewert, R. Havenith, N. Zúñiga-Villarreal*, Edwin Otten*; Inorg. Chem. 2022, 6113532–13542.

  9. Halide Effects in Reductive Splitting of Dinitrogen with Rhenium Pincer Complexes;
    R. S. van Alten, P. A. Wieser, M. Finger, J. Abbenseth, S. Demeshko, C. Würtele, I. Siewert*, S. Schneider*, Inorg. Chem. 2022, 6111581-11591.

  10. Electroreduction of Carbonyl Compounds Catalyzed by a Manganese Complex;
    I. Fokin, K.-T. Kuessner, I. Siewert*, ACS Catal. 2022, 128632–8640.

  11. A Binuclear Cobalt Complex in the Electrochemical Water Oxidation Reaction;
    S. Nestke, J. Stubbe, R. Koehler, E. Ronge, U. Albold, W. Vioel, C. Jooss, B. Sarkar*, I. Siewert*, Z. anorg. allg. Chem. 2022e202200119.
    (Special Issue: Dedicated to the celebration of 130 years of ZAAC)

  12. Electrochemical CO2 Reduction Catalyzed by Binuclear LRe2(CO)6Cl2 and LMn2(CO)6Br2 Complexes with an Internal Proton Source;
    I. Siewert*, Acc. Chem. Res. 2022, 55473-483.

  13. Ordering a rhenium catalyst on Ag(001) through molecule-surface step interaction;
    O. Bunjes, L. A. Paul, X. Da, H. Jiang, T. Claus, A. Rittmeier, D. Schwarzer, F. Ding, I. Siewert, M. Wenderoth*, Commun. Chem., 2022, 53.

  14. Redox-Active Heteroatom-Functionalized Polyacetylenes;
    B. T. Luppi, A. V. Muralidharan, N. Ostermann, I T. Cheong, M. J. Ferguson, I. Siewert*, E. Rivard*, Angew. Chem. Int. Ed., 2022, 61e202114586.

  15. Transition Metal Complex Catalysed Photo- and Electrochemical (De)hydrogenations Involving C=O- and C=N-Bond;
    I. Fokin, K.-T. Kuessner, I. Siewert*SYNTHESIS , 2022, 54295-314.

  16. A Bioinspired Disulfide/Dithiol Redox Switch in a Rhenium Complex as Proton, H-Atom, and Hydride Transfer Reagent;
    S.-A. Hua, L. Paul, M. Oelschlegel, S. Dechert, F. Meyer*, I. Siewert*, J. Am. Chem. Soc. 2021, 1436238-6247.

  17. Solvent dependent C–H Bond Strength in a Nickel Pincer Complex;
    F. Schneck, M. Finger, I. Siewert, S. Schneider*, Z. anorg. allg. Chem. 2021, 6471478-1485.

  18. A Stable Homoleptic Divinyl Tetrelene Series;
    M. M. D. Roy, S. R. Baird, E. Dornsiepen, L. A. Paul, L. Miao, M. J. Ferguson, Y. Zhou, I. Siewert*, E. Rivard*, Chem. Eur. J. 2021, 278572-8579.

  19. Selective Electrocatalytic CO2 Reduction to CO by an NHC-Based Organometallic Heme Analogue;
    A. A. Massie, C. Schremmer, I. Rüter, S. Dechert, I. Siewert*, F. Meyer*, ACS Catal. 2021, 11, 3257–3267.

  20. Manganese and rhenium tricarbonyl complexes equipped with proton relays in the electrochemical CO2 reduction reaction;
    J. Mukherjee, I. Siewert*, Eur. J. Inorg. Chem. 2020, 4319-4333.
    (Special Issue: ADUC prize winners)

  21. Renewable Resources for Sustainable Metallaelectro-Catalysed C–H Activation;
    R. C. Samanta, T. H. Meyer, I. Siewert, L. Ackermann*, Chem. Sci. 2020, 11, 8657-8670.

  22. Chemoselective Electrochemical Hydrogenation of Ketones and Aldehydes with a Well-Defined Base-Metal Catalyst;
    I. Fokin, I. Siewert*, Chem. Eur. J. 2020, 26, 14137-14143.

  23. Photochemical Properties of Re(CO)3 Complexes with and without a Local Proton Source and Implications for CO2 Reduction Catalysis;
    L. A. Paul, N. Röttcher, J. Zimara, J.-H. Borter, J.-P. Du, D. Schwarzer*, R. Mata*, I. Siewert*, Organometallics 2020, 39, 2405–2414.

  24. A Dinuclear Rhenium Complex in the Electrochemically Driven Homogeneous and Heterogeneous H+/CO2-Reduction;
    L. A. Paul, S. Rajabi, C. Jooss, F. Meyer, F. Ebrahimi, I. Siewert*, Dalton Trans. 2020, 49, 8367-8374.

  25. Rhenium Complexes of Pyridyl-Mesoionic Carbenes: Photochemical Properties and Electrocatalytic CO2 Reduction;
    L. Suntrup, F. Stein, J. Klein, A. Wilting, F. G. L. Parlane, C. M. Brown, J. Fiedler, C. Berlinguette, I. Siewert, B. Sarkar*, Inorg. Chem. 2020, 59, 4972-4984.

  26. Electrochemical and Photophysical Properties of Ruthenium(II) Complexes Equipped with Sulfurated Bipyridine Ligands;
    S.-A. Hua, M. Cattaneo, M. Oelschlegel, M. Heindl, L. Schmid, S. Dechert, O. S. Wenger, I. Siewert*, L. González*, F. Meyer*, Inorg. Chem. 2020, 59, 4972-4984.

  27. An Electrochemical and Spectroscopic Study on Re(CO)3(L)Cl in Dimethylformamide (L = 2,2’-bipyridine);
    J.-P. Du, I. Siewert*, Z. anorg. allg. Chem. 2020, 646, 705-711.

  28. (Electro-)chemical Splitting of Dinitrogen with a Rhenium Pincer Complex;
    R. S. van Alten, F. Wätjen, S. Demeshko, A. J. M. Miller, C. Würtele, I. Siewert*, S. Schneider*, Eur. J. Inorg. Chem. 2020, 4972-4984.
    Cover Feature: Eur. J. Inorg. Chem. 2020, 1348.
    (Special Issue: Nitrogen Fixation)

  29. Electrocatalytic Hydrogen Production with a Molecular Cobalt Complex in Aqueous Solution;
    M. Wilken, I. Siewert*, ChemElectroChem 2020, 7, 217-222.

  30. The Impact of a Proton Relay in Binuclear α-Diimine-Mn(CO)3 Complexes on the CO2 Reduction Catalysis;
    I. Fokin, A. Denisiuk, C. Würtele, I. Siewert*, Inorg. Chem. 2019, 58, 10444-10453.
    (Special Issue: Celebrating the Year of the Periodic Table: Emerging Investigators in Inorganic Chemistry)

  31. Electrochemical N2 splitting at well-defined metal complexes;
    N. Ostermann, I. Siewert*, Curr. Opin. Electrochem. 2019, 1597-101.

  32. Are two metal ions better than one? Mono‐ and binuclear α‐diimine‐Re(CO)3 complexes with proton responsive ligands in the CO2 reduction catalysis;
    J.-P. Du, A. Wilting, I. Siewert*, Chem. Eur. J. 2019, 25, 5555-5564.

  33. Evidence for Single Electron Shift in a Lewis Acid Base Reaction;
    Z. Dong, H. H. Cramer, M. Schmidtmann, L. A. Paul, I. Siewert, T. Müller*, J. Am. Chem. Soc. 2018, 140, 15419-15424.

  34. Mechanistic Studies on the Anodic Functionalisation of Alkenes Catalysed by Diselenides;
    M. Wilken, S. Ortgies, A. Breder*, I. Siewert*, ACS Catal. 2018, 8, 10901-10912.

  35. Electrochemical Water Oxidation Using a Copper Complex;
    S. Nestke, E. Ronge, I. Siewert*, Dalton Trans. 2018, 47, 10737-10741.
    (Special Issue: New Talents Europe)

  36. Mechanism of Chemical and Electrochemical N2 Splitting by a Rhenium Pincer Complex;
    B. M. Lindley, R. S. van Alten, M. Finger, F. Schendzielorz, C. Würtele, A. J. M. Miller*, I. Siewert*, S. Schneider*, J. Am. Chem. Soc. 2018, 140, 7922–7935.

  37. Thermochemistry of a Cobalt Complex with Ionisable Pyrazole Protons;
    M. Wilken, C. Würtele, M. Kügler, F. Chrobak, I. Siewert*, Eur. J. Inorg. Chem. 2018, 2339-2344.
    (Special Issue: 20th Anniversary (Celebrating the Past, Present and Future))

  38. A Dinculear Rhenium Complex with a Proton Responsive Ligand in the Electrochemical-Driven CO2-Reduction Catalysis;
    A. Wilting,  I. Siewert*, ChemistrySelect 2018, 3, 4593-4597.

  39. 2,2’-Bipyridine Equipped with a Disulfide/Dithiol Switch for Coupled Two Electron and Proton Transfer;
    M. Cattaneo,* C. E. Schiewer, A. Schober, S. Dechert, I. Siewert*, F. Meyer*, Chem. Eur. J. 2018, 24, 4864-4870.

  40. Electrocatalytic Azide Oxidation Mediated by a Rh(PNP) Pincer Complex;
    C. Rebreyend, Y. Gloaguen, M. Lutz, J. I. van der Vlugt, I. Siewert, S. Schneider*, B. de Bruin*, Chem. Eur. J. 2017, 23, 17438–17443;
    Cover Feature: Chem. Eur. J. 2017, 17396.

  41. A Copper Complex as Catalyst in Proton Reduction;
    S. Nestke, M. Kügler, J. Scholz, M. Wilken, C. Jooss, I. Siewert*, Eur. J. Inorg. Chem. 2017, 3376–3382;
    Cover: Eur. J. Inorg. Chem. 2017, 3361.

  42. Dinuclear Rhenium Complex with a Proton Responsive Ligand as a Redox Catalyst for the Electrochemical CO2 Reduction;
    A. Wilting, T. Stolper, R. A. Mata*, I. Siewert*, Inorg. Chem. 2017, 56, 4176–4185.

  43. Copper Complexes as Catalyst Precursors in the Electrochemical Hydrogen Evolution Reaction;
    M. Kügler, J. Scholz, A. Kronz, I. Siewert*, Dalton Trans. 2016, 456974-6982.

  44. Copper Complexes with NH-Imidazolyl and NH-Pyrazolyl Units and Determination of Their Bond Dissociation Gibbs Energies;
    A. Wilting, M. Kügler, I. Siewert*, Inorg. Chem. 2016, 55, 1061–1068.

  45. Trendberichte Koordinationschemie und Bioanorganik;
    M. Walter*, U.-P. Apfel*, I. Siewert*, Nachrichten aus der Chemie 2016, 64, 232-244.

  46. Electrocatalytic Dihydrogen Production with a Robust Mesoionic Pyridylcarbene Cobalt Catalyst;
    M. van der Meer, E. Glais, I. Siewert*, B. Sarkar*, Angew. Chem. Int Ed. 2015, 54, 13792-13795.

  47. Phenol Based-Ligands with Two Adjacent N,N’,O-Binding Pockets;
    A. Wilting, M. Kügler, I. Siewert*, Z. Anorg. Allg. Chem. 2015, 641, 2498-2505.

  48. Proton-coupled Electron Transfer Reactions Catalysed by 3d Metal Complexes;
    I. Siewert*, Chem. Eur. J. 2015, 21, 15078-15091.

  49. Dinuclear Zinc and Cobalt Complexes with Imidazolyl and N-Methylmidazolyl Units and Their Solution Speciation and Redox Properties;
    M. Kügler, J. Gałęzowska, F. Schendzielorz, S. Dechert, S. Demeshko, I. Siewert*, Eur. J. Inorg. Chem. 2015, 2695-2706.

  50. Cobalt Catalyst with a Proton-Responsive Ligand for Water Oxidation;
    I. Siewert*, J. Gałezowska, Chem. Eur. J. 2015, 21, 2780-2784.

  51. Trendberichte Koordinationschemie;
    I. Siewert*, M. Walter*, Nachrichten aus der Chemie 2015, 63, 242-251.

  52. Trendberichte Koordinationschemie;
    I. Siewert*, M. Walter*, Nachrichten aus der Chemie 2014, 62, 237-246.

  53. Di- and Trinuclear Zinc and Cobalt Complexes and their Reactivity towards Dioxygen;I. Siewert*, M. Sietzen, S. Dechert, S. Demeshko, Eur. J. Inorg. Chem. 2013, 3689-3698.


  1. Bulky N-heterocyclic carbene and pyridine donor adducts of Co(II) bromide: Influence on reactivity of stoichiometry, sterics and donor capability;
    K. A. Smart, A. Vanbergen, J. Lednik, C. Y. Tang, H. B. Mansaray, I. Siewert, S. Aldridge*, J. Organomet. Chem. 2013, 741-742, 33-39.

  2. Syntheses and Anion Binding Capabilities of Bis(diarylboryl) Ferrocenes and Related Systems;
    M. J. Kelly, A. E. J. Broomsgrove, I. R. Morgan, I. Siewert, P. Fitzpatrick, J. Smart, D. Vidovic, S. Aldridge*;  Organometallics 2013, 32, 2674-2684.

  3. Probing the influence of steric bulk on anion binding by triarylboranes: comparative studies of FcB(o-Tol)2, FcB(o-Xyl)2 and FcBMes2;
    I. Siewert*, P. Fitzpatrick, A. E. J. Broomsgrove, M. Kelly, D. Vidovic, S. Aldridge*, Dalton Trans. 201140, 10345-10350.

  4. Syntheses of Homochiral 1,2-Ferrocene-Functionalized Lewis Acids and Acid/Base Pairs;
    I. Siewert*, D. Vidovic, S. Aldridge*, J. Organomet. Chem. 2011, 696, 2528-2532.


  1. A Trispyrazolylborato-Iron-Cysteinato Complex as a Functional Model for the Cystein-Dioxygenase;
    M. Sallmann, I. Siewert, L. Fohlmeister, C. Limberg*, C. Knispel, Angew. Chem. Int. Ed. 2012, 51, 2234–2237;  Angew. Chem. 2012, 124, 2277–2280.

  2. Low-Molecular Weight Analogues of the Soluble Methane Monooxygenase: From the Structural Mimicking of Resting-States and Intermediates to Functional Models;
    I. Siewert, C. Limberg*, Chem. Eur. J. 2009, 15, 10316-10328.

  3. A Trispyrazolylborato Iron Malonato Complex as a Functional Model for the Acetylacetone Dioxygenase;
    I. Siewert, C. Limberg*, Angew. Chem. Int. Ed. 2008, 47, 7953-7956; Angew. Chem. 2008, 120, 8071-8074.

  4. A Dinuclear Iron Complex Based on Parallel Malonate Binding Sites: Cooperative Activation of Dioxygen and Biomimetic Ligand Oxidation;
    I. Siewert, C. Limberg*, S. Demeshko, E. Hoppe, Chem. Eur. J. 2008, 14, 9377-9388.

  5. A Xanthene-based Ligand with Two Adjacent Malonate Binding Sites;
    I. Siewert, C. Limberg*, Z. Naturforsch. 2007, 62b, 1251–1258.


  1. High-valent Molybdenum Imido Complexes with Tethered Olefins;
    I. Siewert, C. Limberg*, B. Ziemer, Z. Anorg. Allg. Chem. 2006, 632, 1078-1082.