Demeshko, Serhiy V.

[["dc.bibliographiccitation.firstpage","3036"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","Inorganica Chimica Acta"],["dc.bibliographiccitation.lastpage","3040"],["dc.bibliographiccitation.volume","363"],["dc.contributor.author","Penkova, Larysa"],["dc.contributor.author","Demeshko, Serhiy"],["dc.contributor.author","Pavlenko, Vadim A."],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Meyer, Franc"],["dc.contributor.author","Fritsky, Igor O."],["dc.date.accessioned","2018-11-07T08:38:00Z"],["dc.date.available","2018-11-07T08:38:00Z"],["dc.date.issued","2010"],["dc.description.abstract","The synthesis, crystal structure and magnetic properties of manganese(III) binuclear complexes [Mn(2)(III)(L-3H)(2)(CH(3)OH)(4)]center dot 2CH(3)OH (1) and [Mn(2)(III)(L-3H)(2)(Py)(4)]center dot 2Py (2) (L = 3-[(1E)-N-hydroxyethanimidoyl]- 4-methyl-1H-pyrazole-5-carboxylic acid) are reported. The ligand contains two distinct donor compartments formed by the pyrazolate-N and the oxime or the carboxylic groups. The complexes were characterized by X-ray single crystal diffraction, revealing that both 1 and 2 consist of dinuclear units in which the two metal ions are linked by double pyrazolate bridges with a planar {Mn(2)N(4)} core. Cryomagnetic measurements show antiferromagnetic interaction with g = 1.99, J = -3.6 cm (1), Theta = -2.02 K for 1 and g = 2.00, J = -3.7 cm (1), Theta = 1.43 K for 2. (C) 2010 Elsevier B. V. All rights reserved."],["dc.identifier.doi","10.1016/j.ica.2010.04.038"],["dc.identifier.isi","000282360200046"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/18673"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Sa"],["dc.relation.issn","0020-1693"],["dc.title","Binuclear manganese(III) complexes of an unsymmetric pyrazolate-based compartmental ligand with hard donor set"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Angewandte Chemie International Edition"],["dc.contributor.author","Li, Ming"],["dc.contributor.author","Gupta, Sandeep K."],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Demeshko, Serhiy"],["dc.contributor.author","Meyer, Franc"],["dc.date.accessioned","2021-06-01T09:41:09Z"],["dc.date.available","2021-06-01T09:41:09Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1002/anie.202101387"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/84832"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-425"],["dc.relation.eissn","1521-3773"],["dc.relation.issn","1433-7851"],["dc.title","Merging Pincer Motifs and Potential Metal–Metal Cooperativity in Cobalt Dinitrogen Chemistry: Efficient Catalytic Silylation of N 2 to N(SiMe 3 ) 3"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","7428"],["dc.bibliographiccitation.issue","20"],["dc.bibliographiccitation.journal","Journal of the American Chemical Society"],["dc.bibliographiccitation.lastpage","7434"],["dc.bibliographiccitation.volume","136"],["dc.contributor.author","Dalle, Kristian"],["dc.contributor.author","Gruene, Tim"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Demeshko, Serhiy"],["dc.contributor.author","Meyer, Franc"],["dc.date.accessioned","2018-11-07T09:40:02Z"],["dc.date.available","2018-11-07T09:40:02Z"],["dc.date.issued","2014"],["dc.description.abstract","The ability of many copper metalloenzymes to activate 02 and transfer it to organic substrates has motivated extensive attention in the literature. Investigations focusing on synthetic analogues have provided a detailed understanding of the structures of potential intermediates, thereby helping to guide mechanistic studies. We report herein a crystallographically characterized synthetic Cu-2(II)(mu-eta(1):eta(1)-O-2) complex exhibiting cis-peroxo bonding geometry, known in iron chemistry but previously unobserved for copper. Detailed investigation by UV-vis, resonance Raman, and infrared spectroscopies provides evidence for a significantly diminished copper-oxygen interaction (epsilon approximate to 3000 M-1 cm(-1), nu(Cu-O) = 437 cm(-1), nu(O-O) = 799 cm(-1)) relative to those in known 'coupled' Cu2O2 species, consistent with magnetic measurements which show that the peroxide mediates only weak antiferromagnetic coupling (-2J = 144 cm(-1)). These characteristics are comparable with those of a computationally predicted transition state for 02 binding to type 3 copper centers, providing experimental evidence for the proposed mechanism of O-2 activation and supporting the biological relevance of the Cu-2(II)(mu-eta(1):eta(1)-O-2) cis-species. The peroxide bonding arrangement also allows binding of sodium cations, observed both in the solid state and in solution. Binding induces changes on an electronic level, as monitored by UV-vis spectroscopy (K-a = 1700 M-1), reminiscent of redox-inactive metal binding by iron-oxygen species. The results presented highlight the analogous chemistry these reactive oxygen species undergo, with respect to both their mechanism of formation, and the molecular interactions in which they participate."],["dc.identifier.doi","10.1021/ja5025047"],["dc.identifier.isi","000336416600038"],["dc.identifier.pmid","24766458"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33423"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Chemical Soc"],["dc.relation.issn","0002-7863"],["dc.title","Weakly Coupled Biologically Relevant Cu-2(II)(mu-eta(1):eta(1)-O-2) cis-Peroxo Adduct that Binds Side-On to Additional Metal Ions"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","8141"],["dc.bibliographiccitation.issue","15"],["dc.bibliographiccitation.journal","Inorganic Chemistry"],["dc.bibliographiccitation.lastpage","8149"],["dc.bibliographiccitation.volume","51"],["dc.contributor.author","Das, Animesh"],["dc.contributor.author","Klinke, Felix J."],["dc.contributor.author","Demeshko, Serhiy"],["dc.contributor.author","Meyer, Steffen"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Meyer, Franc"],["dc.date.accessioned","2018-11-07T09:07:18Z"],["dc.date.available","2018-11-07T09:07:18Z"],["dc.date.issued","2012"],["dc.description.abstract","A new family of tetranuclear nickel cube complexes [Ni4L4(solv)(4)} (1, solv = MeOH; 2, solv = H2O; H2L = pyrazole-based tridentate {ONO} ligand) has been studied in detail, in particular by X-ray diffraction and superconducting quantum interference device (SQUID) magnetometry. Different solvates 1 center dot H2O, 2 center dot 4C(3)H(6)O, 2-CH2Cl2, and 2 center dot H2O were obtained in crystalline form. Only small structural variations were found for the Ni-O-Ni angles of the [Ni4O4] cores of those compounds, but these slight variations have dramatic consequences for the magnetic properties. [Ni4L4(MeOH)(4)}center dot H2O (1 center dot H2O) and [Ni4L4(H2O)(4)]center dot H2O (2 center dot H2O) can be reversibly interconverted in the solid state by exposure to the respective solvent, MeOH or H2O, and this goes along with a switching of the spin ground state from magnetic (S-T = 4) to diamagnetic (S-T = 0). Likewise the (irreversible) loss of lattice solvent in [Ni4L4(H2O)(4)]center dot 4C(3)H(6)O (2 center dot 4C(3)H(6)O) to give 2 center dot 2C(3)H(6)O changes the ground state from S-T = 4 to S-T = 0. In view of these dramatic solvatomagnetic effects for the present [Ni4L4(solv)(4)] complexes, which occur upon extrusion of lattice solvent or facile exchange of coordinated solvent molecules while keeping the robust [Ni4O4] core intact, a note of care is issued: whenever magnetic data are obtained for powdered material or for crystals that easily loose lattice solvent molecules, the magnetic properties may not necessarily reflect the situation observed in the corresponding single crystal diffraction study. Finally, a thorough analysis of the present series of complexes as well as other {Ni-4(mu(3)-OR)(4)} cubes reported in the literature confirms that a correlation between the (Ni-O-Ni)(av) bond angle and J in {Ni4O4} cubane complexes does indeed exist."],["dc.description.sponsorship","DFG [SFB 602]"],["dc.identifier.doi","10.1021/ic300535d"],["dc.identifier.isi","000307134700026"],["dc.identifier.pmid","22823896"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/25763"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Chemical Soc"],["dc.relation.issn","0020-1669"],["dc.title","Reversible Solvatomagnetic Effect in Novel Tetranuclear Cubane-Type Ni-4 Complexes and Magnetostructural Correlations for the [Ni-4(mu(3)-O)(4)] Core"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","10101"],["dc.bibliographiccitation.issue","31"],["dc.bibliographiccitation.journal","Chemistry - A European Journal"],["dc.bibliographiccitation.lastpage","10106"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Albers, Antonia"],["dc.contributor.author","Bayer, Thomas A."],["dc.contributor.author","Demeshko, Serhiy"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Meyer, Franc"],["dc.date.accessioned","2018-11-07T09:22:18Z"],["dc.date.available","2018-11-07T09:22:18Z"],["dc.date.issued","2013"],["dc.description.sponsorship","DFG [IGRK 1422]; Cusanuswerk"],["dc.identifier.doi","10.1002/chem.201301760"],["dc.identifier.isi","000321983700006"],["dc.identifier.pmid","23780647"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/29311"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","0947-6539"],["dc.title","A Functional Model for the Rieske Center: Full Characterization of a Biomimetic N-Ligated [2Fe-2S] Cluster in Different Protonation States"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","65"],["dc.bibliographiccitation.journal","Inorganic Chemistry Communications"],["dc.bibliographiccitation.lastpage","68"],["dc.bibliographiccitation.volume","30"],["dc.contributor.author","Massoud, Salah S."],["dc.contributor.author","Pujol, Kyle J."],["dc.contributor.author","Mautner, Franz A."],["dc.contributor.author","Demeshko, Serhiy"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Meyer, Franc"],["dc.date.accessioned","2018-11-07T09:26:27Z"],["dc.date.available","2018-11-07T09:26:27Z"],["dc.date.issued","2013"],["dc.description.abstract","The reaction of the polynucleating ligand 1,3,5-tris[bis(2-pyridylmethyl)aminomethyl]benzene (L-TDPA) with Cu(ClO4)(2)center dot 6H(2)O afforded the trinuclear complex [Cu-3(T-TDPA)(H2O)(7)](ClO4)(6)center dot 5H(2)O (I). When the reaction was performed in the presence of the squarate dianion, C4O42-, the compound {[Cu-6(L-TDPA)(2)(mu(1,3)-C4O4)(3)](ClO4)(6)center dot 12H(2)O}(n) (2) was obtained. Both compounds have been characterized by X-ray crystallography, showing a trinuclear and a 1D polymeric structures for 1 and 2, respectively. Complex 2 is composed of unusual hexametallic building blocks. Magnetic susceptibility measurements (SQUID) reveal essentially uncoupled copper(II) ions in complex 1, whereas complex 2 shows weak antiferromagnetic coupling via the squarato bridges within magnetically isolated dicopper(II) subunits of the 1D chain. (C) 2013 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.inoche.2013.01.012"],["dc.identifier.isi","000317446600016"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30304"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","1387-7003"],["dc.title","Squarato-metal(II) complexes: Part 6(1). Synthesis, structure and magnetic characterization of an usual squarate-based 1D copper(II) coordination polymer composed of hexanuclear entities and a trinucleating ligand scaffold"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Abstracts of Papers of the American Chemical Society"],["dc.bibliographiccitation.volume","248"],["dc.contributor.author","Schweinfurth, David"],["dc.contributor.author","Bill, Eckhard"],["dc.contributor.author","Atanasov, Mihail"],["dc.contributor.author","Demeshko, Serhiy"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Meyer, Franc"],["dc.contributor.author","Neese, Frank"],["dc.contributor.author","Sarkar, Biprajit"],["dc.date.accessioned","2018-11-07T09:36:41Z"],["dc.date.available","2018-11-07T09:36:41Z"],["dc.date.issued","2014"],["dc.identifier.isi","000349167401162"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/32675"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Chemical Soc"],["dc.publisher.place","Washington"],["dc.relation.conference","248th National Meeting of the American-Chemical-Society (ACS)"],["dc.relation.eventlocation","San Francisco, CA"],["dc.relation.issn","0065-7727"],["dc.title","Tripodal click ligands: Fine tuning of geometry and electronic structure in iron(II) complexes"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","9191"],["dc.bibliographiccitation.issue","39"],["dc.bibliographiccitation.journal","Angewandte Chemie International Edition"],["dc.bibliographiccitation.lastpage","9194"],["dc.bibliographiccitation.volume","50"],["dc.contributor.author","Albers, Antonia"],["dc.contributor.author","Demeshko, Serhiy"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Bill, Eckhard"],["dc.contributor.author","Bothe, Eberhard"],["dc.contributor.author","Meyer, Franc"],["dc.date.accessioned","2018-11-07T09:00:40Z"],["dc.date.available","2018-11-07T09:00:40Z"],["dc.date.issued","2011"],["dc.description.sponsorship","DFG (International Research Training Group GRK) [1422]; Cusanuswerk"],["dc.identifier.doi","10.1002/anie.201100727"],["dc.identifier.isi","000296104300035"],["dc.identifier.pmid","21919155"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/24227"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1433-7851"],["dc.title","The Complete Characterization of a Reduced Biomimetic [2Fe-2S] Cluster"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1233"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","European Journal of Inorganic Chemistry"],["dc.bibliographiccitation.lastpage","1239"],["dc.contributor.author","Nie, Feng-Mei"],["dc.contributor.author","Leibeling, Guido"],["dc.contributor.author","Demeshko, Serhiy"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Meyer, Franc"],["dc.date.accessioned","2018-11-07T11:04:18Z"],["dc.date.available","2018-11-07T11:04:18Z"],["dc.date.issued","2007"],["dc.description.abstract","Four dinickel complexes [(LNi2)-Ni-1(mu-Cl)(Cl)2](.)2CH(3)OH (1a), [(LNi2)-Ni-1(mu-Cl)(CH3OH)](ClO4)(2) (1b), [(LNi2)-Ni-2(mu-Cl)Cl-2(H2O)2](.) H2O (2) and [(LNi2Cl2)-Ni-3(CH3OH)(2)]Cl(.)2CH(3)OH (3) were synthesized and structurally characterized. The ligand scaffolds have a central pyrazolato bridge and N-donor chelate arms that provide two proximate binding pockets for the nickel ions. While the longer ligand side arms in 1a, 1b and 2 induce (NiNi)-Ni-... distances of around 4.0 angstrom and favour incorporation of a chlorido bridge within the dimetallic pocket, a stretched (NiNi)-Ni-... separation of 4.6 angstrom with an unusual intramolecular (ClH)-H-...-O linkage is observed in 3. Various (ClH)-H-...-O hydrogen-bonding motifs are identified in the solid-state structures of 1-3, where either the H-donor (MeOH or H2O) or the H-acceptor (chlorido) or both are bound to a nickel ion, and their relative donor-acceptor distances are discussed. Magnetic coupling mediated through the pyrazolato and chlorido bridges is rather weak and antiferromagnetic, but it is even weaker for the (ClH)-H-...-O linkage. ((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)"],["dc.identifier.doi","10.1002/ejic.200600889"],["dc.identifier.isi","000245367400008"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/51811"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-v C H Verlag Gmbh"],["dc.relation.issn","1434-1948"],["dc.title","Intra- and intermolecular H center dot center dot center dot Cl-Ni bonding patterns in a series of highly preorganized dinuclear nickel(II) complexes"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","4929"],["dc.bibliographiccitation.issue","14"],["dc.bibliographiccitation.journal","Journal of the American Chemical Society"],["dc.bibliographiccitation.lastpage","4939"],["dc.bibliographiccitation.volume","140"],["dc.contributor.author","Duan, Peng-Cheng"],["dc.contributor.author","Manz, Dennis-Helmut"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Demeshko, Serhiy"],["dc.contributor.author","Meyer, Franc"],["dc.date.accessioned","2020-11-05T14:37:46Z"],["dc.date.available","2020-11-05T14:37:46Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1021/jacs.8b01468"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/68192"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-352"],["dc.relation.eissn","1520-5126"],["dc.relation.issn","0002-7863"],["dc.title","Reductive O2 Binding at a Dihydride Complex Leading to Redox Interconvertible μ-1,2-Peroxo and μ-1,2-Superoxo Dinickel(II) Intermediates"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]