Topic
Tetrahedral molecular geometry
About: Tetrahedral molecular geometry is a research topic. Over the lifetime, 1795 publications have been published within this topic receiving 30706 citations.
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TL;DR: The polychalcogenide compound AuCuSe(4) as discussed by the authors crystallizes in the monoclinic space group P2(1)/m with a = 4.318 A, b = 7.447 A, c = 8.099 A, beta = 93.33 A, and Z = 2.52 eV.
Abstract: The polychalcogenide compound AuCuSe(4) crystallizes in the monoclinic space group P2(1)/m with a = 4.318(2) A, b = 7.447(1) A, c = 8.099(1) A, beta = 93.33(2)(o), and Z = 2. The structure of AuCuSe(4) is a unique three-dimensional framework assembled from formally Au(3+) and Cu(+) ions and Se(3)(2-) and Se(2-) fragments. Conceptually, the framework is composed of one-dimensional [Au(Se(3))Se](n)(n-) chains linked by Cu(+) atoms. The Au atoms adopt a square planar geometry while Cu atoms adopt a severely distorted tetrahedral geometry. The Se(3)(2-) ligand in this structure shows an unprecedented ligation mode using both its terminal and internal selenium atoms. The material is a p-type narrow gap semiconductor with a band gap of approximately 0.52 eV.
8 citations
TL;DR: A binuclear Zn(II) complex has been prepared and the crystal structure determined by single-crystal X-ray diffraction as mentioned in this paper, which has a more planar structure and displays strong blue fluorescence at room temperature than the pbdiim molecule.
8 citations
TL;DR: In this paper, two neutral group 12 metal complexes, bis(pyrrol-2-ylmethyleneaminoethylthio)zinc(II) (1) with the (Nimine)2S2 coordination mode were synthesized by using metal-templated Schiff base condensation, and their molecular structures were determined by X-ray diffraction analysis.
8 citations
TL;DR: In this article, six new organic conductors were prepared on the basis of the iodine-bonded π donor diiodo(ethylenedithio)tetraselenafulvalene and indium tetrahalide anions.
Abstract: Six new organic conductors were prepared on the basis of the iodine-bonded π donor diiodo(ethylenedithio)tetraselenafulvalene and indium tetrahalide anions. The utilization of solvent additives made it possible to modify the quality, structure, morphology, and composition of the crystals. Among the additives, the addition of a few drops of water for the electrochemical crystallization induced the in situ transformation of the tetrahedral [InCl4]– anion to the octahedral [InCl4(H2O)2]– anion. Other small solvent molecules, such as methanol or ethanol, worked as well for the crystallization. All new salts include strong and directional iodine-based halogen bonds, that is, the iodine bond, and the novel supramolecular structures are successfully tailored by characteristic intermolecular interaction. It is also worth noting that the tetrahedral geometry of the counteranion plays a key role in the construction of the solid-crossing double-layer structure of the donor molecules, which is observed in the newly prepared InCl4 and [InCl4(H2O)2] salts.
8 citations
TL;DR: In this article, the synthesis and crystal structure of a novel copper(ll) halide cluster, (Et4N)8Cu14Cl28O4 8− can be viewed as being formed by the dimerization of two Cu7Cl14O2 4− fragments.
Abstract: The synthesis and crystal structure of a novel copper(ll) halide cluster, (Et4N)8Cu14Cl28O4, is reported. The cluster anion Cu14Cl28O4 8− can be Viewed as being formed by the dimerization of two Cu7Cl14O2 4− fragments. The hypothetical precursor anion of this latter cluster, Cu7Cl15O2 5− in tum can be viewed as being formed from. the known parent Cu7Cl14O2 4− cluster anions by fusion of pairs across a common CuCI3 face. The fusion and dimenzation processes cause substantial distortion of the trigonal bipyramidal coordmation geometry of the copper(II) ions in the parent cluster. For three of the copper(II) ions this Yields a 4+1 geometry distinct from either trigonal blpyramldal or square pyramidal. The dimerization of the two Cu7 clusters forces a severe distortion upon one additional copper(II) ion, this time towards a tetrahedral geometry. The implications of these distortions for the catalytic properties reactivities and magnetic behaviour of the parent complex are discussed.
8 citations