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Search query: dimeric cation
402 articles match your search "dimeric cation"Results 1 to 10, sorted by relevance:
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The crystal structure of (GlyH)6(Pb3I12) is reported. Dimeric cations of type (A+
A+) for the amino acid glycine are observed for the first time.
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The first example of a nonbridging η2-coordination of a tetrazolato ligand to a d-block element (Zr) is reported. Three related dinuclear 5-phenyltetrazolato complexes of Ti, Zr, and Ta are structurally characterized.
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The crystal structure of the first trinuclear copper–pyrazolate (pz) complex with three different terminal ligands, including a strongly binding sulfate, is reported. The sulfate ion also acts as bridging ligand, leading to a dimeric structure, [Cu3(μ3-OH)(μ-4-Cl-pz)3(μ4-SO4)(DMF)(H2O)]2·4DMF·2H2O.
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The crystal structure is reported of a three-dimensional anionic CuICN network with noncoordinated protonated N-methylethanolamine cations providing charge neutrality. Pairs of cuprophilic Cu atoms are bridged by μ3-cyanide groups which link these units into 43 spirals along the c axis, and these are linked together by other cyanide groups. On heating the compound to 280 °C, a CuCN residue is formed, while further heating leaves a residue of elemental copper, isolated as the oxide.
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Structural and biochemical analyses of S-adenosyl-L-homocysteine hydolase from Synechocystis sp. PCC 6803 are reported.
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The hydrogen-bond interactions exhibited by three new compounds incorporating 5-fluorocytosine, urea, 3,5-dinitrosalicylic acid, 2-amino-4-chloro-6-methylpyrimidine and 6-chloronicotinic acid generate a variety of supramolecular assemblies in three-dimensional space as networks and ribbons. The molecular recognition process, hydrogen-bond motifs and supramolecular assemblies will help in fine tuning properties for desired needs.
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The structure of the first metal complex of octaethyl pyrophosphoramide is a dimer containing two calcium ions bridged by two nitrate and two octaethyl pyrophosphoramide ligands. Each calcium ion is further coordinated by a nitrate ion acting as a bidentate ligand and a water molecule and has a coordination number of 8.
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The structures of three copper-containing complexes are reported and tests for their activity in the oxidation of D-galactose suggest that, unlike the enzyme galactose oxidase, due to the precipitation of Cu2O, this reaction is not catalytic as would have been expected.
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The effect of amino acid backbone length on molecular packing has been studied using crystalline tartrates of glycine, β-alanine, γ-aminobutyric acid (GABA) and DL-α-aminobutyric acid (AABA) as examples.
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The characteristic feature of this cadmium(II) complex is the formation of a dimeric bridged structure where the two CdII cations are bridged by S atoms from the N,N-diallylldithiocarbamate ligands.