Structure and germicidal property of a novel guanidine organomercury complex

A novel guanidine organomercury complex 1, [HgCl(DNP)]·CH5N3·CH3CN 1 (DNP = 2,4- dinitrophenol), has been synthesized. Each mercury(II) atom is tricoordinated to one chlorine atom, one carbon atom of the benzene ring, and one oxygen atom from 2, 4-dinitrophenol. The coordination arrangement around the mercury atom is Y-shaped. This is the first structural report on an organomercury derivative of 2, 4-dinitrophenol and guanidine. The distance of Hg-Cl between the two Hg ions groups is 3.272 Å, which indicates the presence of weak Hg···Cl interactions. Secondary bonds make complex 1 form 3D interspersed network structure, which is 2D [HgCl(DNP)CH5N3]n plane and 1D solvent [(CH3CN)2]∞ broadband. The antibacterial activity of 1 were studied. It shows complex 1 has very good bactericidal activity, and is also a potential antimicrobial agents.

Влияние плотности атомов буферного газа на форму эксимерной полосы HgXe(A-=SUP=-3-=/SUP=-0-=SUP=-+-=/SUP=-)-> HgXe(X-=SUP=-1-=/SUP=-0-=SUP=-+-=/SUP=-)

The reasons for the discrepancies between the experimental data on the shape of long-wavelength continua near the 6^3 P _1 → 6^1 S _0 resonance line of a mercury atom in a xenon atmosphere obtained by different authors are analyzed. Calculations of spectral profiles for limiting cases of high and low densities of buffer gas atoms lead to the conclusion that the discrepancies are mainly due to the dependence of the rates of three-particle recombination and relaxation processes on the xenon density. Different types of a non-equilibrium or almost equilibrium (at high xenon concentrations) population of rovibrational states of a HgXe( A ^30^+) excimer molecule are formed at different rates of these processes, which affects emission spectral profiles.

Synthesis and crystal structures of bis(imidazolidine-2-thione-κS)bis(thiocyanato-κS)mercury(II) and bis(cyanido)bis(μ2-imidazolidine-2-thione-κS)mercury(II).Hg(CN)2

Two mercury(II) complexes containing imidazolidine-2-thione (Imt) and thiocyanate or cyanide ligands, [Hg(Imt)2(SCN)2] (1) and [Hg(Imt)2(CN)2].Hg(CN)2(2), have been prepared and characterized by IR and NMR spectroscopy and X-ray crystallography. In compound1, the mercury atom is located on a two-fold rotation axis and is coordinated to two thione sulfur atoms of imidazolidine-2-thione (Imt) and to two sulfur atoms of thiocyanate in a distorted tetrahedral mode with the S-Hg-S bond angles in the range of 98.96(3)–148.65(6)°. In2, the mercury atom is hexa-coordinated having a distorted octahedral geometry composed of two cyanide C atoms [Hg-C=2.055(5) Å] and four weakly bound thione S atoms of imidazolidine-2-thione (Imt) [Hg-S=3.1301(13) and 3.1280(13) Å]. One free Hg(CN)2molecule is also present in the crystal. In both complexes, the molecular structure is stabilized by N-H…N and N-H…S hydrogen bonding interactions.