Dinickel Complexes of the "Two-In-One" Pincer scaffold

Goursot, Pierre

dc.contributor.advisor	Meyer, Franc Prof. Dr.
dc.contributor.author	Goursot, Pierre
dc.date.accessioned	2019-11-11T09:14:23Z
dc.date.available	2019-11-11T09:14:23Z
dc.date.issued	2019-11-11
dc.identifier.uri	http://hdl.handle.net/21.11130/00-1735-0000-0005-12A1-0
dc.identifier.uri	http://dx.doi.org/10.53846/goediss-7715
dc.identifier.uri	http://dx.doi.org/10.53846/goediss-7715
dc.language.iso	eng	de
dc.publisher	Niedersächsische Staats- und Universitätsbibliothek Göttingen	de
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.ddc	540	de
dc.title	Dinickel Complexes of the "Two-In-One" Pincer scaffold	de
dc.type	doctoralThesis	de
dc.contributor.referee	Meyer, Franc Prof. Dr.
dc.date.examination	2019-05-29
dc.description.abstracteng	Bringing two metal ions in close proximity offers interesting perspectives for cooperative activation and catalytic transformation of substrates. Ditopic pyrazolate-based bridging ligands are known to represent valuable ligand scaffolds in this regard. These studies on bimetallic systems featuring metal-metal cooperativity (MMC) are often inspired by multimetallic sites found in the active centers of metalloenzymes. Metal-ligand cooperation (MLC) is a ubiquitous concept applied for the activation and transformation of organic substrates in catalysis. The (de)aromatization of organometallic systems exemplified by Milstein’s Ru catalyst, is a convenient method to perform polar bond dissociation during a catalytic event. The implementation of such a ligand motif in a bimetallic scaffold is an approach to combine both intramolecular MMC and MLC. The following work continued the investigation made by S. Samanta in 2015, in which a “Two-In-One” di-iron complex was synthesized. This work extended the development of similar organometallic complexes by exploring the chemistry of nickel. A major achievement of this work involves the introduction of a series of new dinickel complexes which were only different from each other by subtle structural modifications. Increased reactivities were observed by stepwise chemical modifications of the system. A highly reactive dinickel complex could be isolated. It displayed attractive reactivities toward the reversible cleavage of H2 by the possible cooperation of the ligand. This reactivity operated via a transverse intramolecular interaction, namely the dihydrogen bond. This subtype of hydrogen bond was stabilized by MMC. This work was an attempt to demonstrate the implication of both MMC and MLC during the chemical reaction of this new dinickel system.	de
dc.contributor.coReferee	Siewert, Inke Prof. Dr.
dc.subject.eng	Dihydrogen Bond	de
dc.subject.eng	Nickel hydride	de
dc.subject.eng	Metal metal cooperation	de
dc.subject.eng	Metal ligand cooperation	de
dc.subject.eng	PNN ligand	de
dc.subject.eng	Hydrogen bond	de
dc.subject.eng	Hydrido Hydroxo	de
dc.subject.eng	Pyrazolate	de
dc.subject.eng	Dinickel	de
dc.identifier.urn	urn:nbn:de:gbv:7-21.11130/00-1735-0000-0005-12A1-0-2
dc.affiliation.institute	Fakultät für Chemie	de
dc.subject.gokfull	Chemie (PPN62138352X)	de
dc.identifier.ppn	1681636948

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