Dithione ligand
WebJun 1, 2024 · The fold angles of the dithione ligand range from 47° in compounds 4b and 4c to 70° in compound 3a [4]. (Right hand side) compound 6 has a dithione fragment on the left and a dithiolate fragment on the right; the dithione shows a fold angle toward the oxo group of 62.6°, whereas the toluene ditholate fragment on the right side of compound 6 ... WebJan 18, 2024 · The molecular structure of 3 and 4 exhibit a large (47° to 70°) fold angle along the S⋅⋅⋅S vector of the dithione ligand. The UV-Vis spectra of 3 and 4 exhibit a low energy charge transfer band at ∼540 nm that are red-shifted ∼200 nm compared to the spectra of 1 and 2.
Dithione ligand
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Webthe ligand. Conceptually, the two extreme forms of dithiolene ligands [1] 2are the fully reduced 1,2 -ene -dith iolate (2 -) state (Dt-) and the fully oxidized dithione state (Dt 0). … WebAug 16, 2016 · Charge transfer is thus believed to proceed from dithiolate HOMO to dithione LUMO, showing ligand-to-ligand redox interplay across a d 10 metal. Graphical abstract. Crystallographically characterized bis-dithiolene Zn complexes with ligands of differing oxidation states exhibit low energy ligand to ligand (LLCT) charge transfer …
WebNov 16, 2024 · The coordination polymer 1D [Cu(H 2 pdt)I] (4), like complex 1, bears fully protonated H 2 pdt ligands in their dithione form. Upon heating, both compounds underwent auto-oxidation coupled with a dehydrogenation of the ligand to form the open-shell neutral copper(II) complex [Cu(Hpdt) 2 ] ( 3 ) and the coordination polymer 1D [Cu 2 I 2 (H 2 pdt ... WebThe title compound, poly[(μ2-2H,5H-1,3-dithiolo[4,5-d][1,3]dithiole-2,5-dithione)hexa-μ2-iodido-diiodidotetramercury(II)], [Hg4I8(C4S6)]n, represents the first example of a coordination polymer assembled by the α,α-C4S6 dithione ligand. The HgII ions are four-coordinated in a distorted tetrahedral geometry, the coordination demand being satisfied …
WebAug 6, 2010 · Structural and electronic features of the novel title sulfur-oxygen donor ligand Me 2 pipto ( 1 ), are discussed in comparison with those of the corresponding dithione ligand Me 2 pipdt. A tuning of the electronic and coordination properties of the ligand, relatable to the soft/hard power of the donor atoms, is achieved. Coordination properties … WebSep 24, 2013 · Its crystal structure and absorption spectrum were determined and compared to those of Ni(Et 2 pipdt)(mnt), where Et 2 pipdt is 1,4-diethyl-piperazine-2,3-dithione. X-ray diffraction analysis reveals that the Ni(S 2 C 2) 2 moiety of Ni(Et 2 dazdt)(mnt) is not planar due to the twist conformation of a seven-member ring of Et 2 dazdt ligand.
WebThe mixed-ligand dithiolene complex [Pt(Bz 2 pipdt)(dcbdt)] (1) bearing the two ligands Bz 2 pipdt = 1,4-dibenzyl-piperazine-3,2-dithione and dcbdt = dicyanobenzodithiolato, has been synthesized, characterized and studied to evaluate its second-order optical nonlinearity.The dithione /dithiolato character of the two ligands gives rise to an asymmetric distribution …
WebThe mixed-ligand complexes [M(II)(Et2dazdt)(mnt)] (M = Ni, 1; Pd, 2; Pt, 3) [Et2dazdt = N,N′-diethyl-perhydrodiazepine-2,3-dithione; mnt = maleonitrile-2,3-dithiolate] have been prepared and fully characterized. X-ray diffractometric studies on 1–3 (the structure of 1 was already known) show that the crystals are isostructural (triclinic, P–1), and two … feast 2005 gifWebMay 1, 2024 · The dithione moiety is an electron-deficient ligand. Dithione ligands can undergo Diels-Alder type cyclo -addition reactions. Coordination complexes of dithione … deborah wilder attorneyWebAug 16, 2016 · Two zinc complexes with mixed-valent dithiolene ligands exhibit ligand-to-ligand charge transfer bands. Optimized geometries, molecular vibrations and … feast 2021 filmWebfocuses on characterizing cobalt dithione complexes and the donor-acceptor relationship between ligands and metal in the complexes. Dithiolene ligands are redox-active and can participate in ... milimolar dithione ligand and 1.46 milimolar sodium hexafluorophosphate. Synthesis reaction of compound 1 has a yield of 80% while compound 2 has a ... deborah williams buffalo nyWebMay 15, 2024 · In contrast to 1, in the cationic 3D structure of 2 each of the silver atoms exhibits an AgS{sub 4} tetrahedral geometry with 4-membered Ag{sub 2}S{sub 2} rings. … deborah wilcox nsw healthWebThe structure of [CuBr(dppbz)(2,4-dtucH 2)] corresponds to a four-coordinate Cu I centre in a tetrahedral coordination environment with the heterocyclic dithione ligand being coordinated to the metal centre in a unidentate fashion through its … feast 2014 film wikipediaWebThe photostabilization technique to enhance the polymer was also used. The ligand Q and its complexes were mixed in 0.5% w/w of polyvinyl chloride in tetrahydrofuran (THF). The photo stabilization of polymer films was studied at 25 °C under irradiation of light λ 380–250 nm with intensity of 7.75 × 10 −9 ein dm −3 s −1 . deborah williams attorney columbus ohio