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Search query: scorpionate ligand
35 articles match your search "scorpionate ligand"Results 1 to 10, sorted by relevance:
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The coordination chemistry of the hydrotris[3-(2-furyl)pyrazol-1-yl]borate (Tp2-Fu) ligand is explored with cerium(III) and dysprosium(III). The difference in Lewis acidity of the ions reveals varying stability in the bis-Tp2-Fu lanthanide complexes.
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Three soft scorpionate coordination complexes of alkali metals are presented together with an overview of the structural preferences of alkali metal soft scorpionate complexes. This analysis suggests that these thione-based ligands will continue to be a rich source of interesting alkali metal motifs worthy of isolation and characterization.
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The synthesis and structure are reported of TpPh,4CNNi(NO3)(EtOH), an octahedral complex containing a tridentate cyanoscorpionate ligand, a bidentate nitrate ligand and a neutral ethanol ligand.
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Three N atoms from the facially capping tridentate chelating tris(4,4-dimethyloxazolin-2-yl)phenylborate ligand and a chloride ligand coordinate an NiII ion in a highly distorted tetrahedral geometry. The Ni—Cl bond length [2.1851 (5) Å] is comparable to those found in a previously reported tris(3,5-dimethylpyrazol-1-yl)hydroborate derivative [2.1955 (18) and 2.150 (2) Å]. The molecular structure deviates from C3v symmetry due to the structural flexibility of the tris(4,4-dimethyloxazolin-2-yl)phenylborate ligand.
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The metal complex is composed of a central copper(I) atom, distorted tetrahedrally coordinated by two of the three pyridazine-3-thione rings and the H atom of the scorpionate ligand and a triphenylphosphane ligand.
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The silver(I) adduct [HB{3-(CF3),5-(CH3)Pz}3]AgNCCH3 was obtained by treating [HB{3-(CF3),5-(CH3)Pz}3]Na with CF3SO3Ag in the presence of acetonitrile, and was isolated in 85% yield. Single-crystal X-ray diffraction analysis reveals that the AgI center has a pseudo-tetrahedral all-nitrogen coordination sphere and is supported by a tris(pyrazolyl)borate ligand that binds to the AgI center in a κ3-fashion.
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Reaction of EuI2(THF)2 with K[HB(3,5-iPr2pz)] (= KTpiPr2, pz = pyrazolyl) afforded the new europium(II) scorpionate complex (KTpiPr2)(3,5-iPr2pzH)2EuIII (1) in addition to the sterically crowded pyrazabole derivative trans-{(3,5-iPr2pz)HB(μ-3,5-iPr2pz)}2 (2) which were both structurally characterized through X-ray diffraction.
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In the crystal, weak Cu
Cl interactions between symmetry-related molecules create a dimerization with a chloride occupying the apical position of the square-pyramidal geometry typical of many copper(II) chloride hetero-scorpionate complexes.
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The metal complex is composed of a copper centre trigonal–bipyramidally surrounded by the scorpionate ligand and an acetamide ligand with a hydrogen-bonded trifluoromethanesulfonate counter-ion.
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A new procedure for the synthesis of the electron-poor ligand tris(3,4,5-tribromopyrazol-1-yl)phosphine oxide is described. The structure displays a network of halogen bonds in the solid state.