In this thesis it is demonstrated that chlorogallanes GaHnCl3-n are versatile starting materials for the preparation of new molecular gallium chalcogenides. In order to establish a firm preparative basis, the structural and coordination chemistry of dichlorogallane, (HGaCl2)2 and its complexes with phosphines and pyridines were studied in great detail. In an extension of these investigations the pyridine complexes of the type L(H)GaCl2, as well as of Ga[GaCl4] - formed by thermolysis of (HGaCl2)2 -, were finally employed in the synthesis of the target molecular gallium chalcogenides. Besides a series of trinuclear, cyclic complexes of the ternary gallium chalcogenide halides [LGaYX]3 (Y= S, Se; X = Cl, Br) chalcogen-rich products like [L6Ga4S5]Br2 with dications representing an analogue of borax, and, for the first time, a donor adduct of the molecular, tetranuclear gallium sulfide Ga4S6 with an adamantane type structure were isolated and characterized. The solubility of these compounds allows for a new approach to the construction of larger assemblies.
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In this thesis it is demonstrated that chlorogallanes GaHnCl3-n are versatile starting materials for the preparation of new molecular gallium chalcogenides. In order to establish a firm preparative basis, the structural and coordination chemistry of dichlorogallane, (HGaCl2)2 and its complexes with phosphines and pyridines were studied in great detail. In an extension of these investigations the pyridine complexes of the type L(H)GaCl2, as well as of Ga[GaCl4] - formed by thermolysis of (HGaCl2)...
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