Novel dithiocarbamate–Hg(II) complexes containing mixed ligands: Synthesis, spectroscopic characterization, and H₂ storage capacity

Abstract

A tetrahedral Hg(II) diethyl dithiocarbamate (Et 2 Dt) complex containing triphenylphosphine (PPh 3 ) of the composition [HgCl(κ 2 -Et 2 Dt) 2 (PPh 3 )] (1) is prepared. Furthermore, complex (1) is used as a synthone to prepare a novel series of complexes of the following composition [Hg(Et 2 Dt)L(PPh 3 )] {L = saccharinate (2), thiosaccharinate (3), benzisothiazolinate (4), benzothiozole-2-thiolate (5), and benzooxazole-2-thiolate (6) anions}. The resulted complexes(1)-(6) are characterized by elemental analysis, molar conductivity, powder X-ray diffraction, fourier transform Infrared, and NMR ( 1 H and 31 P) spectroscopic techniques. The Et 2 Dt ligand is coordinated as bidentate chelate through the sulfur atoms, whereas the L ligands are bonded as monodentate ligands to afford a tetrahedral geometry around the Hg(II) ion. Nitrogen adsorptiondesorption isotherm for two of as-prepared complexes (2) and (3) are measured first to get their Brunauer-Emmett-Teller surface area. Moreover, the mentioned two complexes are evaluated for their ability to store hydrogen gas at 77 K. However, the results of the hydrogen storage tests proved that the selected complexes are all capable of storing hydrogen, but in varying degrees, where complex (2) exhibited a storage capacity of 4.22 wt% under 88 bar. K E Y W O R D Sbidentate chelate, complexes, diethyl dithiocarbamate, Hg(II), hydrogen storage

Cytotoxicity, anti‐microbial studies of M(II)‐dithiocarbamate complexes, and molecular docking study against SARS COV2 RNA‐dependent RNA polymerase

“…Metal complexes of dithiocarbamate ligands have been the topic of current and increasing concern because they possess a wide range of medical fields (such as antibacterial, anti‐fungal, and anti‐inflammatory) and industry, analytical, and organic chemistry. [ 1–11 ]…”

Estimation of the Efficiency of Corrosion Inhibition by Zn-Dithiocarbamate Complexes: a Theoretical Study

“…Metal complexes of dithiocarbamate compounds have been the substance of a recently growing interest because it possesses a wide range of applications in agricultural science, medicine, industry, and analytical and organic chemistry [1][2][3][4][5][6][7][8][9][10]…”

Antimicrobial, computational, and molecular docking studies of Zn (II) and Pd (II) complexes derived from piperidine dithiocarbamate

“…The traditional method is based on the reaction of a primary or secondary amine with carbon disulfide in the presence of metal or alkaline salt, due to low stability of these acids. [ 6–22 ]…”

“…[ 1–11 ] Dithiocarbamate can bond to metal ions in different coordination modes (Chart 2) as (i) monodentate ligands through the sulfur of the CSS − group ( A ); [ 10–15 ] (ii) bidentate chelating fashion through the sulfur atoms, through production of two almost equal M–S bonds. In doing so, it forms a small bite angle (S‐M‐S), ranging from 65° to 80° being dependent upon the size of the ligand and metal ion ( B ); [ 7,9,16–38 ] (iii) bidentate bridging mode through the two sulfur atoms or through the one of the sulfur atom only ( C ); [ 26,37,39–41 ] (iv) poly‐dentate mode between three center or more ( D ). [ 28,37,42–44 ] Metal complexes of dithiocarbamate present a wide range of applications in agricultural science, medicine as antibacterial, anti‐fungal, and anti‐inflammatory, industry, analytical, and organic chemistry.…”

“…The traditional method is based on the reaction of a primary or secondary amine with carbon disulfide in the presence of metal or alkaline salt, due to low stability of these acids. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] Metal complexes of dithiocarbamate ligands have been the subject of current and growing interest because it possesses wide range of medical fields. [1][2][3][4][5][6][7][8][9][10][11] Dithiocarbamate can bond to metal ions in different coordination modes (Chart 2) as (i) monodentate ligands through the sulfur of the CSS − group (A); [10][11][12][13][14][15] (ii) bidentate chelating fashion through the sulfur atoms, through production of two almost equal M-S bonds.…”