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 molecular structure of a nickel(0) complex with P,S-donor atom ligands has been characterized by X-ray crystallography as discussed by the authors, and the results show that complex 3, (Ph2P(o-C6H4)SCH3)2Ni0, prepared by Na/Hg amalgam reduction of the NiII complex, degrades photochemically with loss of CH3 radicals to yield complex 3.
Abstract: The molecular structure of a nickel(0) complex with P,S-donor atom ligands has been characterized by X-ray crystallography. Complex 1, (Ph2P(o-C6H4)SCH3)2Ni0, prepared by Na/Hg amalgam reduction of the NiII complex [(Ph2P(o-C6H4)SCH3)2Ni](BF4)2 ([2](BF4)2), degrades photochemically with loss of CH3 radicals to yield complex 3, (Ph2P(o-C6H4)S)2NiII. Crystallographic parameters for the three compounds are as follows: 1, monoclinic space group C2/c with a = 11.467(2) A, b = 17.613(3) A, c = 15.733(2) A, β = 96.450(10)°, V = 3157.5(9) A3, and Z = 4; [2](BF4)2, monoclinic space group P21/c with a = 9.417(4) A, b = 14.822(9) A, c = 13.773(2) A, β = 98.55(3)°, V = 9101(14) A3, and Z = 2; and 3, monoclinic space group P21/c with a = 9.651(2) A, b = 12.971(8) A, c = 12.540(2) A, β = 110.46(2)°, V = 1470.7(11) A3, and Z = 2. While complex 1 has a distorted tetrahedral geometry, complexes [2](BF4)2 and 3 are square planar with trans stereochemistry. The cyclic voltammogram of [2](BF4)2 in CH3CN shows two redox even...
68 citations
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TL;DR: In this article, eight novel complexes were synthesized and their structures were proved by SC-XRD, FT-IR, UV-Vis, and 1H NMR spectroscopic techniques.
67 citations
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TL;DR: The IR and the 1H-NMR spectra of the complexes suggest that the cefotaxime behaves as monoanionic tridentate ligand.
Abstract: Cefotaxime (Hcefotax) interacts with transition metal ions to give [M(cefotax)Cl] complexes (M = Mn(II), Fe(III), Co(II), Ni(II), Cu(II) and Cd(II)) which were characterized by physicochemical and spectroscopic methods and a tetrahedral geometry is suggested for their structure. The IR and the 1H-NMR spectra of the complexes suggest that the cefotaxime behaves as monoanionic tridentate ligand . The complexes have been screened for antibacterial activity against several bacteria, and the results are compared with the activity of cefotaxime
67 citations
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TL;DR: In this article, a series of 14-20 membered tetraamide macrocyclic complexes, [ML n ] 2+, where M = Ni II and Cu II, or a tetrahedral geometry for M = Co II and Zn II have been assigned.
67 citations
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TL;DR: A new Schiff base 2-aminophenol-pyrrole-2-carboxaldehyde and its Zn, Cd, Sn, Sn and Pb complexes have been synthesized and characterized by various physicochemical studies and suggest a tetrahedral geometry around metal ions.
66 citations