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Monika Sieger · SciRah

Researcher profile · Semantic Scholar

Monika Sieger

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Monika Sieger — researcher profile on SciRah

h-index: 15
Works: 38
Citations: 676

Most-cited papers

Chemical and Electrochemical Generation of Hydride-Forming Catalytic Intermediates (bpy)M(CnRn): M = Rh, Ir (n = 5); M = Ru, Os (n = 6). Coordinatively Unsaturated Ground State Models of MLCT Excited States?
W. Kaim, Ralf Reinhardt, Monika Sieger
199478 citations
Semantic Scholar
Self-assembly of heterobimetallic neutral macrocycles incorporating ferrocene spacer groups: spectroelectrochemical analysis of the double two-electron oxidation of a molecular rectangle.
Neeladri Das, A. Arif, P. Stang, Monika Sieger +3 more
2005Inorganic Chemistry47 citations
Semantic Scholar
Ambi-Valence Taken Literally: Ruthenium vs Iron Oxidation in (1,1′-Diphosphinoferrocene)ruthenium(II) Hydride and Chloride Complexes as Deduced from Spectroelectrochemistry of the Heterodimetallic “Mixed-Valent” Intermediates†
T. Sixt, Monika Sieger, Michael J. Krafft, Denis Bubrin +2 more
201044 citations
Semantic Scholar
Establishing the NO oxidation state in complexes [Cl(5)(NO)M](n-), M = Ru or Ir, through experiments and DFT calculations.
Monika Sieger, B. Sarkar, S. Záliš, J. Fiedler +4 more
2004Dalton Transactions44 citations
Semantic Scholar
The metal-NO interaction in the redox systems [Cl5Os(NO)]n-, n = 1-3, and cis-[(bpy)2ClOs(NO)]2+/+: calculations, structural, electrochemical, and spectroscopic results.
Priti Singh, B. Sarkar, Monika Sieger, M. Niemeyer +3 more
2006Inorganic Chemistry38 citations
Semantic Scholar
The 1,4-diazabutadiene/1,2-enediamido non-innocent ligand system in the formation of iridaheteroaromatic compounds: Spectroelectrochemistry and electronic structure
W. Kaim, Monika Sieger, S. Greulich, B. Sarkar +2 more
201034 citations
Semantic Scholar
EPR Insensitivity of the Metal‐Nitrosyl Spin‐Bearing Moiety in Complexes [LnRuII‐NO·]k
S. Frantz, B. Sarkar, Monika Sieger, W. Kaim +3 more
200432 citations
Semantic Scholar
Rhenium(I) coordinated lumazine and pterin derivatives: structure and spectroelectrochemistry of reversibly reducible (6-ATML)Re(CO)3Cl (6-ATML=6-acetyl-1,3,7-trimethyllumazine)
Sonia B. Jiménez‐Pulido, Monika Sieger, Axel Knödler, O. Heilmann +5 more
200131 citations
Semantic Scholar
2,2'-Dipyridylketone (dpk) as ancillary acceptor and reporter ligand in complexes [(dpk)(Cl)Ru(mu-tppz)Ru(Cl)(dpk)]n+ where tppz = 2,3,5,6-tetrakis(2-pyridyl)pyrazine.
Sandeep Ghumaan, B. Sarkar, N. Chanda, Monika Sieger +3 more
2006Inorganic Chemistry22 citations
Semantic Scholar
Geometrical and electronic structures of dinuclear complex ions {(mu-bpym)[Cu(EAr3)2]2}2+ with intramolecular "organic sandwich" formation (E = P or As; Ar = Aryl; bpym = 2,2'-bipyrimidine).
Monika Sieger, C. Vogler, A. Klein, Axel Knödler +5 more
2005Inorganic Chemistry21 citations
Semantic Scholar
Low-valent cobalt complexes with three different pi acceptor ligands: experimental and DFT studies of the reduced and the low-lying excited states of (R-DAB)Co(NO)(CO), R-DAB = substituted 1,4-diaza-1,4-butadiene.
Monika Sieger, M. Wanner, W. Kaim, D. J. Stufkens +2 more
2003Inorganic Chemistry21 citations
Semantic Scholar
Coordination Alternatives in Dinuclear Bis(pyridin‐2‐ylalkyl)benzylaminecopper(II) Complexes with OH–, RO–, F–, or Cl– Bridges: Experimental Structures and DFT Preferences
J. Manzur, A. Vega, A. García, Carolina Acuña +6 more
200720 citations
Semantic Scholar
A radical-bridged bis(ferrocenylcopper(I)) complex: Structural identity, multifrequency EPR, and spectroelectrochemistry
S. Roy, Monika Sieger, Priti Singh, M. Niemeyer +3 more
200819 citations
Semantic Scholar
A Cobaltocenium Complex of Dibenzo[c,g]fluorenide and Its Structural and Electrochemical Properties
F. Pammer, Yu Sun, Monika Sieger, J. Fiedler +2 more
201017 citations
Semantic Scholar
Structure, electrochemistry, spectroscopy, and magnetic resonance, including high-field EPR, of {(μ-abpy)[Re(CO)3X]2}o/•−, where abpy=2,2′-azobispyridine and X=F, Cl, Br, I
S. Frantz, Monika Sieger, I. Hartenbach, F. Lissner +4 more
200916 citations
Semantic Scholar
A tetranuclear organorhenium(i) complex of the 2,3,5,6-tetrafluoro-7,7,8,8-tetracyano-p-quinodimethane radical anion, TCNQF4 (-).
A. N. Maity, B. Sarkar, M. Niemeyer, Monika Sieger +3 more
2008Dalton Transactions14 citations
Semantic Scholar
Pseudo-base formation in the attempted synthesis of a conjugatively coupled bis(nitrosylruthenium) complex and spectroelectrochemistry of bipyrimidine-bridged dinuclear Ru(terpy)X precursor compounds (X = Cl, NO2).
Priti Singh, Monika Sieger, J. Fiedler, Cheng-Yong Su +1 more
2008Dalton Transactions14 citations
Semantic Scholar
Copper(I) Chelation by Tetradentate NSSN Donor Ligands: Reversible Oxidation but no Oxygenation
Johannes Schnödt, Monika Sieger, B. Sarkar, J. Fiedler +3 more
201113 citations
Semantic Scholar
Reversible radical complex formation of an organometallic diplatinum(IV) compound
Cüneyt Kavakli, A. Gabrielsson, Monika Sieger, B. Schwederski +2 more
200713 citations
Semantic Scholar
Reduced and excited states of the intermediates (alpha-diimine)(C5R5)Rh in hydride transfer catalysis schemes: EPR and resonance Raman spectroscopy, and comparative DFT calculations of Co, Rh and Ir analogues.
Monika Sieger, W. Kaim, D. J. Stufkens, T. Snoeck +2 more
2004Dalton Transactions13 citations
Semantic Scholar
Replacement of 2,2‘-Bipyridine by 1,4-Diazabutadiene Acceptor Ligands: Why the Bathochromic Shift for [(N∧N)IrCl(C5Me5)]+ Complexes but the Hypsochromic Shift for (N∧N)Ir(C5Me5)?
S. Záliš, Monika Sieger, S. Greulich, H. Stoll +1 more
200313 citations
Semantic Scholar
Mixed-valency with cyanides as terminal ligands: Diruthenium(III,II) complexes with the 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine bridge and variable co-ligands (CN− vs. bpy or NH3)
M. M. Vergara, Mónica E. García Posse, F. Fagalde, N. Katz +4 more
201012 citations Open access
Semantic Scholar
Reactivity of Copper(I) Complexes with Tripodal Ligands towards O2: Structures of a Precursor [L3CuI(NCCH3)](BF4), L3 = Tris(3‐isopropyl‐4,5‐trimethylenepyrazolyl)methane and of its Oxidation Product [L3CuII(μ‐OH)2CuIIL3](BF4)2 with Strong Antiferromagnetic Spin‐Spin Coupling
W. Kaim, C. Titze, Thilo Schurr, Monika Sieger +5 more
200512 citations Open access
Semantic Scholar
Establishing the chelating alpha-azocarbonyl function in pi-acceptor ligands.
S. Roy, Monika Sieger, B. Sarkar, B. Schwederski +4 more
2008Angewandte Chemie11 citations
Semantic Scholar
Etablierung der chelatbildenden a-Azocarbonyl-Funktion in p-Akzeptor-Liganden
S. Roy, Monika Sieger, Biprajit Sarkar, Brigitte Schwederski +4 more
200811 citations
Semantic Scholar
High-frequency EPR and structural data as complementary information on stable radical complexes containing the semi-reduced azo function
B. Sarkar, S. Frantz, S. Roy, Monika Sieger +4 more
200811 citations
Semantic Scholar
Binuclear rhodium(III) and iridium(III) monoselenocarboxylates: Synthesis, spectroscopy and structure of an ortho-metallated iridium complex featuring an IrCCC(μ-Se) chelate ring
L. B. Kumbhare, A. Wadawale, V. Jain, Monika Sieger +1 more
20109 citations
Semantic Scholar
Coupling of Electron Transfer and Bond Dissociation Processes in Dinuclear Complexes with Rhodium and Iridium Reaction Centres Bridged by 2,2'-Bipyrimidine
W. Kaim, Ralf Reinhardt, S. Greulich, Monika Sieger +2 more
20019 citations
Semantic Scholar
Structural and Spectroscopic Evidence for Marginal Metal-to-Ligand Charge Transfer in Complexes Pt(abpy)Me3X, abpy = 2,2′-Azobispyridine, X = Cl, Br, I†
A. Dogan, Cüneyt Kavakli, Monika Sieger, M. Niemeyer +2 more
20088 citations
Semantic Scholar
Dimerization of the 2-(Methylselenomethyl)benzimidazole-silver(I) Cation Involving a AgI–AgI Interaction†
Markus Leboschka, Monika Sieger, M. Niemeyer, S. Záliš +1 more
20088 citations
Semantic Scholar
Silver(I), Copper(I) and Copper(II) Complex of the New N,Se‐Chelate Ligand 2‐Phenylselenomethyl‐1H‐benzimidazole: Electrochemistry and Structure
Markus Leboschka, Monika Sieger, B. Sarkar, M. Niemeyer +4 more
20096 citations Open access
Semantic Scholar
Chelation and Bridging of Zinc(II) by Tetradentate N2S2 Donor Ligands: Similarities and Differences to Copper(I) and Copper(II) Systems
Johannes Schnödt, Monika Sieger, T. Schleid, I. Hartenbach +1 more
20105 citations Open access
Semantic Scholar
Geometrical and Ground State Electronic Structures of Nitrosylcobalt Complexes [(RNCHCHNR)Co(NO)(CO)] (R = Isopropyl, 2,6-Diisopropylphenyl orp-Tolyl) from Experiment and DFT-Calculations
Monika Sieger, Klaus Hübler, T. Scheiring, T. Sixt +2 more
20025 citations
Semantic Scholar
Synthesis and Redox Behavior of Novel 9,10‐Diphenylphenanthrenes
Alina Schreivogel, Monika Sieger, Angelika Baro, S. Laschat
20104 citations
Semantic Scholar
2‐Organoselenomethyl‐1H‐benzimidazole Complexes of Copper(II) and Copper(I)
Markus Leboschka, Monika Sieger, B. Sarkar, J. Heck +7 more
20092 citations Open access
Semantic Scholar
Synthesis, Characterization and Structure of Tribromo(2-phenyl- 1,8-naphthyridine)gold(III)
R. Schmidt, S. Moya, P. Aguirre, M. Fuentealba +4 more
20110 citations Open access
Semantic Scholar
Synthesis, Characterization and Structure of Tribromo(2-phenyl-
R. Schmidt, A. Moya, P. Aguirre, M. Fuentealba +5 more
20110 citations
Semantic Scholar
Replacement of 2,2'-bipyridine by 1,4-diazabutadiene acceptor ligands: why the bathochromic shift for [(N empty set N)IrCl(C5Me5)]+ complexes but the hypsochromic shift for (N empty set N)Ir(C5Me5)?
S. Záliš, Monika Sieger, S. Greulich, H. Stoll +1 more
2003Inorganic Chemistry0 citations
Semantic Scholar

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