Grosse, Christian

[["dc.bibliographiccitation.firstpage","10049"],["dc.bibliographiccitation.issue","21"],["dc.bibliographiccitation.journal","Inorganic Chemistry"],["dc.bibliographiccitation.lastpage","10059"],["dc.bibliographiccitation.volume","48"],["dc.contributor.author","Stollenz, Michael"],["dc.contributor.author","John, Michael"],["dc.contributor.author","Gehring, Henrike"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Grosse, Christian"],["dc.contributor.author","Meyer, Franc"],["dc.date.accessioned","2018-11-07T11:22:18Z"],["dc.date.available","2018-11-07T11:22:18Z"],["dc.date.issued","2009"],["dc.description.abstract","The synthesis of three pyrazole-based, potentially binucleating ligands 3,5-bis(R(1)N(CH(3))CH(2))-4-R(2)pyrazole (L(1)H: R(1) pyridyl-2-methyl-, R(2) = Ph; L(2)H: R(1) = 8-quinolyl-, R(2) = H; L(3)H: R(1) = 8-quinolyl-, R(2) = Ph) is described. Reaction of L(1-3)H with 1 equiv. of mesitylcopper affords oligonuclear homoleptic complexes of the type [CuL](n) (1-3). The single crystal X-ray structure of 2 shows a tetranuclear assembly of linear coordinated copper(I)-centers bridged by pyrazolato ligands that alternate above and below the Cu(4) plane, with additional weak interactions from some of the ligand side arms. As the single crystal X-ray structure of 3 reveals, phenyl substitution at the 4-position of the pyrazolato framework leads to significant structural modification of the Cu(4) array, giving a rhombical tetranuclear complex with two linear coordinated copper(I) centers that exhibit a short intramolecular Cu:: center dot Cu contact (2.8212(10) angstrom) and two peripheral copper(I) centers in a distorted tetrahedral coordination mode. Thus, 3 represents a very rare example of an inorganic pyrazolato cuprate which can also be viewed as a partly rearranged structural isomer of 2. Furthermore, the crystal lattice of 3 shows an extended network of intra- and intermolecular pi-pi stacking interactions between the aromatic rings. In solution, 1-3 each form two types of oligomers a and b that slowly (<1 s(-1)) equilibrate at room temperature. Using Diffusion Ordered Spectroscopy (DOSY) and variable temperature (1)H NMR spectroscopy it can be shown that a and b correspond to a tetrameric and a (planar) trimeric species. Coordination of the pyridyl/quinolyl side arms that is observed in the solid state seems to be only transient in solution."],["dc.description.sponsorship","Fonds der Chernischen Industrie"],["dc.identifier.doi","10.1021/ic900727h"],["dc.identifier.isi","000270987400019"],["dc.identifier.pmid","19803532"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/55964"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Chemical Soc"],["dc.relation.issn","0020-1669"],["dc.title","Oligonuclear Homoleptic Copper(I) Pyralzolates with Multinucleating Ligand Scaffolds: High Structural Diversity in Solid-State and Solution"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3708"],["dc.bibliographiccitation.issue","14"],["dc.bibliographiccitation.journal","Organometallics"],["dc.bibliographiccitation.lastpage","3725"],["dc.bibliographiccitation.volume","30"],["dc.contributor.author","Stollenz, Michael"],["dc.contributor.author","Gehring, Henrike"],["dc.contributor.author","Konstanzer, Vera"],["dc.contributor.author","Fischer, Stefan"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Grosse, Christian"],["dc.contributor.author","Meyer, Franc"],["dc.date.accessioned","2018-11-07T08:54:12Z"],["dc.date.available","2018-11-07T08:54:12Z"],["dc.date.issued","2011"],["dc.description.abstract","The synthesis of a series of new pyrazole-based binucleating compartmental ligands, 3,5-bis((RRN)-R-2-N-3)-(4-R-1)-pyrazoles (LH)-H-1-(LH)-H-6 ((LH)-H-1, R-1 = H, R-2 = Me, R-3 = 2-py(CH2); (LH)-H-2, R-1 = Ph, R-2 = Me, R-3 = 2-py(CH2); (LH)-H-3, R-1 = H, R-2 = Cy, R-3 = 2-py(CH2); (LH)-H-4, R-1 = Ph, R-2 = Cy, R-3 = 2-py(CH2); (LH)-H-5, R-1 = Ph, R-2, R-3 = 2-py(CH2), L6H, R-1 = Ph, R-2 = Me, R-3 = 8-quin), together with the X-ray crystal structure of (LH)-H-3 is reported. After deprotonation and subsequent reaction with 2 equiv of [Cu-I(CH3CN)(4)](BF4) and PMe3, (LH)-H-3 forms the stable binuclear Cu-I complex [L-3{Cu(PMe3)}(2)](BF4) (1). The analogous reaction with (LH)-H-6 and 2 equiv of tert-butyl isonitrile affords [L-6{Cu(CNtBu)}(2)](BF4) (2), 1 and 2 represent the first examples of binuclear Cu-I-pyrazolate complexes of the type [LCu21]X that have been characterized by their X-ray crystal structures. With respect to the planes spanned by the pyrazolate backbone, 1 shows a cis orientation of the PMe3 ligands, whereas 2 exhibits a trans arrangement of the tBuNC ligands. (LH)-H-1-(LH)-H-6 are shown to react with 4 equiv of mesitylcopper and stoichiometric amounts of dioxygen, leading to the formation of the unusually stable organocopper frameworks 3-8. These complexes follow a general structural principle that is best described by the heteroleptic O-centered cuprate anion [(MesCu(I))(4) (mu(4)-O)](2-) linked via four trans-oriented sigma-mesityl bridges to two flanking binuclear Cu-I-pyrazolates [(L-1-L-6)Cu-2(I)](+). Thus, 1 and 2 can also be viewed as capping binuclear Cu-I-complex units that are concealed by two ancillary PMe3 and tBuNC ligands, respectively. The exemplary reaction of 4 with an excess of dimethyl acetylenedicarboxylate (DMDAC) supports the observed cuprate features of 3-8, since after hydrolysis the corresponding (syn-)addition product MesC(CO2Me)=C(CO2Me)H (9) and the free ligand (LH)-H-2 are found as major products."],["dc.description.sponsorship","Fonds der Chemischen Industrie"],["dc.identifier.doi","10.1021/om100836j"],["dc.identifier.isi","000292847900006"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8936"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/22617"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Chemical Soc"],["dc.relation.issn","0276-7333"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","From Pyrazolate-Based Binuclear Copper(I) Complexes to Octanuclear sigma-Mesityl-Bridged mu(4)-Oxo-Cuprocuprates: Controlled Dioxygen Splitting by Organocopper Scaffolds"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Abstracts of Papers of the American Chemical Society"],["dc.bibliographiccitation.volume","242"],["dc.contributor.author","Stollenz, Michael"],["dc.contributor.author","Gehring, Henrike"],["dc.contributor.author","Konstanzer, Vera"],["dc.contributor.author","Fischer, Stefan"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Grosse, Christian"],["dc.contributor.author","Meyer, Franc"],["dc.date.accessioned","2018-11-07T08:53:05Z"],["dc.date.available","2018-11-07T08:53:05Z"],["dc.date.issued","2011"],["dc.identifier.isi","000299378300024"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/22326"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Chemical Soc"],["dc.publisher.place","Washington"],["dc.relation.conference","242nd National Meeting of the American-Chemical-Society (ACS)"],["dc.relation.eventlocation","Denver, CO"],["dc.relation.issn","0065-7727"],["dc.title","From pyrazolate-based binuclear copper(I) complexes to octanuclear s-mesityl-bridged m(4)-oxo-cuprocuprates: A concept for small molecule activation by functional molecular scaffolds"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","10428"],["dc.bibliographiccitation.issue","37"],["dc.bibliographiccitation.journal","Chemical Communications"],["dc.bibliographiccitation.lastpage","10430"],["dc.bibliographiccitation.volume","47"],["dc.contributor.author","Burger, Boris"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Grosse, Christian"],["dc.contributor.author","Demeshko, Serhiy"],["dc.contributor.author","Meyer, Franc"],["dc.date.accessioned","2018-11-07T09:00:57Z"],["dc.date.available","2018-11-07T09:00:57Z"],["dc.date.issued","2011"],["dc.description.abstract","A novel pyrazolate-based diiron(II) complex shows five different binding modes of exogenous carboxylate ligands in a single crystal structure. Temperature dependent X-ray data reveal thermally induced disorder due to carboxylate dynamics that resemble the carboxylate shift, as it is known from various diiron enzyme active sites."],["dc.description.sponsorship","DFG [IRTG 1422]; Evonik Foundation"],["dc.identifier.doi","10.1039/c1cc13756e"],["dc.identifier.isi","000294500600072"],["dc.identifier.pmid","21842055"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8677"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/24289"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Royal Soc Chemistry"],["dc.relation.issn","1364-548X"],["dc.relation.issn","1359-7345"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Visualising the carboxylate shift at a bioinspired diiron(II) site in the solid state"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","106"],["dc.bibliographiccitation.journal","Journal of Organometallic Chemistry"],["dc.bibliographiccitation.lastpage","111"],["dc.bibliographiccitation.volume","821"],["dc.contributor.author","Stollenz, Michael"],["dc.contributor.author","Fischer, Stefan"],["dc.contributor.author","Gehring, Henrike"],["dc.contributor.author","Resch, Stefan G."],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Grosse, Christian"],["dc.contributor.author","Meyer, Franc"],["dc.date.accessioned","2018-11-07T10:06:59Z"],["dc.date.available","2018-11-07T10:06:59Z"],["dc.date.issued","2016"],["dc.description.abstract","The synthesis and characterization of the a-mesityl NHC-complex (SIMes)CuMes (1) and the dicopper(I) oxalato complex [(SIMes)Cu](2)(C2O4) (2; SIMes = 1,3-dimesitylimidazolin-2-ylidene) are described. 1, a new example of a sigma-organocopper complex bearing an imidazolin-2-ylidene ligand, is obtained from the stoichiometric reaction of mesitylcopper with SIMes. The single crystal X-ray structure determination of 1 reveals a linearly coordinated copper ion. Clean reaction of 1 with 0.5 equiv. of oxalic acid affords the dinuclear copper(I) oxalato complex 2 with concomitant elimination of mesitylene. As confirmed by Xray crystallography, the cuprous ions are bridged by the oxalate in mu-1,2,3,4 mode and are each coordinated by one NHC-capping ligand, thus both copper(I) exhibit trigonal coordination geometries, though with slight distortions. 2 represents the first example of a copper(I) oxalato complex stabilized by two N-heterocyclic carbene ligands. Whereas 1 is only moderately air-stable in the solid state, 2 resists to non-inert conditions at least for several days. The thermal decomposition behavior of 2 was investigated by thermal gravimetric analysis/differential scanning calorimetry coupled with mass spectrometry (TGA/DSC-MS) and revealed the elimination of HCN, CO and CO2 in the temperature range 210-350 degrees C to finally give elemental copper in a controlled degradation process. (C) 2016 Elsevier B.V. All rights reserved."],["dc.description.sponsorship","Georg-August-Universitat Gottingen"],["dc.identifier.doi","10.1016/j.jorganchem.2016.07.006"],["dc.identifier.isi","000387633400013"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/39199"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Sa"],["dc.relation.issn","1872-8561"],["dc.relation.issn","0022-328X"],["dc.title","Molecular dicopper(I) oxalate stabilized by two N-heterocyclic carbenes: A potential precursor for copper deposition"],["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","239"],["dc.contributor.author","Stollenz, Michael"],["dc.contributor.author","Gehring, Henrike"],["dc.contributor.author","John, Michael"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Grosse, Christian"],["dc.contributor.author","Meyer, Franc"],["dc.date.accessioned","2018-11-07T08:45:00Z"],["dc.date.available","2018-11-07T08:45:00Z"],["dc.date.issued","2010"],["dc.identifier.isi","000208189303185"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/20329"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Chemical Soc"],["dc.publisher.place","Washington"],["dc.title","Oligonuclear homoleptic and heteroleptic s-mesityl-bridged copper(I)-pyrazolates with compartmental ligand scaffolds: Exceptional organo- and amidocopper frameworks"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","4994"],["dc.bibliographiccitation.issue","20"],["dc.bibliographiccitation.journal","Chemistry - A European Journal"],["dc.bibliographiccitation.lastpage","4997"],["dc.bibliographiccitation.volume","15"],["dc.contributor.author","Prokofieva, Angelina"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Grosse, Christian"],["dc.contributor.author","Sheldrick, George M."],["dc.contributor.author","Meyer, Franc"],["dc.date.accessioned","2018-11-07T08:34:04Z"],["dc.date.available","2018-11-07T08:34:04Z"],["dc.date.issued","2009"],["dc.identifier.doi","10.1002/chem.200900424"],["dc.identifier.isi","000266292200005"],["dc.identifier.pmid","19343749"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/17734"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","0947-6539"],["dc.title","Oxidative ortho C-C Coupling of 4-Ethylphenol by Dual Substrate Activation at a Bioinspired Dicopper Complex-Trapping of an Unusual Oligophenolic Cu-6 Species"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]