Transformation of Cadmium Tetracyanoquinodimethane (TCNQ) into a Cadmium Terephthalate Metal-Organic Framework
MetadataShow full item record
The transformation of cadmium 7,7,8,8-tetracyanoquinodimethane (TCNQ) into a cadmium terephthalate co-ordination polymer is reported, with the chemistry of this material elucidated using elemental analysis, X-ray photoelectron spectroscopy and synchrotron radiation single-cr ystal X-ray diffraction. A heptacoordinated Cd II linear coordination polymer catena-poly[triaqua-(µ 2 -benzene-1,4-dicarboxylato-?O,O')cadmium(ii)]hydrate (1) was isolated while attempting to recrystallize Cd(TCNQ) 2 . Density functional theory calculations for the oxidation of benzylic carbon attached to the cyano group provided evidence that the reaction pathway proposed herein is highly exergonic and thermodynamically plausible. This structure showed a distorted pentagonal bipyramidal geometry together with a symmetrical mononuclear unit in which each Cd II ion is doubly bridged by a dicarboxylato anion. Owing to the softness and minute size of these crystals, this structure had to be elucidated using synchrotron radiation X-ray crystallography.
Showing items related by title, author, creator and subject.
Lunar neutron energy spectra from isotope abundance measurements on cadmium, samarium and gadolinium.Sands, Daphne G. (1998)This thesis provides new evidence which contributes to a clearer understanding of the mixing history of the lunar soil, the interactions of cosmic rays with the lunar surface and any temporal and spatial variations in ...
A Field Investigation of Solubility and Food Chain Accummulation of Biosolid-Cadmium Across Diverse Soil TypesMcLaughlin, M.; Whatmuff, M.; Warne, M.; Heemsbergen, D.; Barry, G.; Bell, M.; Nash, D.; Pritchard, Deborah (2006)Cadmium is a potentially toxic metal that is an unwanted contaminant in urban wastewater biosolids, and has the potential to accumulate through the food chain. This study found that the accumulation of cadmium in wheat ...
Synthesis of zeolites X and A from fly ashes for cadmium and zinc removal from aqueous solutions in single and binary ion systemsIzidoro, Juliana; Fungaro, D.; Abbott, Jennifer; Wang, Shaobin (2013)Two different Brazilian fly ashes were used to selectively synthesize pure zeolites X and A by a two-step process. The zeolites were characterized in terms of mineralogical composition (XRD), morphological analysis (SEM), ...