In the title coordination polymer, [Hg₄Cl₄(C₂₆H₂₀N₆)](n), one Hg(II) ion is coordinated by four N atoms from the benzylbis((pyridin-2-yl)methyl-idenehydrazone) ligand and two Cl⁻ ions in a very distorted cis-HgCl₂N₄ octa-hedral geometry. The other Hg(II) ion is coordinated in a distorted tetra-hedral geometry by four Cl⁻ ions. Bridging chloride ions link the Hg(II) ions into a chain propagating...

A laboratory reactor system was developed to examine the role of light and aerosol composition in the reduction of oxidized mercury (Hg(ii)) in laboratory-generated aerosols. Aerosolized sodium chloride, doped with mercury chloride, was exposed to light in a fixed-bed flow-through reactor. Three spectral ranges (UV, visible and a simulated solar spectrum) were examined, along with dark experime...

The reaction of 2-aminoethanethiol hydrochloride with Hg(2)Cl(2) in water yielded elemental mercury and one-dimensional polynuclear compounds [{Hg(3)Cl(5)(SCH(2)CH(2)NH(3))(3)}Cl](n) and [HgCl(SCH(2)CH(2)NH(2))(H(2)O)(2)](n) (2). The coordination environment around Hg in 1 and 2 is quite variable despite similar reaction conditions. The formation of a five-membered S/N chelate in 2 can be attri...

Mercury (Hg) pollution in the environment is a global issue and toxicity of mercury depends on its speciation. Chemical redox reactions an aquatic greatly impact Hg evasion to atmosphere methylation natural waters. Identifying abiotic pathways relevant waters important for predicting transport fate environment. The objective this review summarize current state knowledge specific at molecular le...

Accurately characterizing net evasion of elemental mercury (Hg(0)) from marine systems is essential for understanding the global biogeochemical mercury (Hg) cycle and the pool of divalent Hg (Hg(II)) available for methylation. Few high resolution measurements of Hg(0) are presently available for constraining global and regional flux estimates and for understanding drivers of spatial and tempora...

A photochemistry/transport model has been developed for elemental and reactive mercury (Hg) in the atmosphere and used to simulate events in the eastern U.S. and adjacent Atlantic Ocean. Results are compared to aircraft measurements in south Florida. The model is a modified form of CMAQ with a new solver for integrated gas-phase and aqueous chemistry, including O3 and precursors, sulfates, chlo...

Mercury (Hg) is a toxic heavy metal that poses significant environmental and human health risks. Soils and sediments, where Hg can exist as the Hg sulfide mineral metacinnabar (β-HgS), represent major Hg reservoirs in aquatic environments. Metacinnabar has historically been considered a sink for Hg in all but severely acidic environments, and thus disregarded as a potential source of Hg back to...

Chemically modified electrodes (CMEs) based on polymeric films of E-5-((5-isopropyl-3,8-dimethylazulen-1-yl) diazenyl)-1H-tetrazole (L) deposited the surface glassy carbon electrode have been used for recognition heavy metal (Me) ions. The electrochemical study L was done by three methods: differential pulse voltammetry (DPV), cyclic (CV), and rotating disk (RDE). CV, DPV, RDE studies were perf...