590-28-3Relevant articles and documents
3D coordination polymer of copper (II)-potassium (I): Crystal structure and thermal decomposition kinetics
Shen, Xiao-Qing,Qiao, Hai-Bin,Li, Zhong-Jun,Zhang, Hong-Yun,Liu, Hong-Lei,Yang, Rui,Chen, Pei-Kun,Hou, Hong-Wei
, p. 642 - 648 (2006)
A new heterometallacrown coordination polymer [K2Cu(NPA) 2(H2O)4]n (where H2NPA = 3-nitro-phthalic acid) has been synthesized and it's crystal structure has been elucidated. In the complex, the o-phthalate group coordinates to metal atoms behaving as both tetradentate and heptadentate coordination, the modes of which have been found for the first time. The thermal behaviors of this complex and the thermal decomposition kinetics have been studied. Kinetic analysis shows that the decomposition of title complex in the main range acts as two separate transitions with the first one being a double-step following reaction, A→F1B→FnC, and the second being a three-step following reaction of t:f,f, A→F2B→F2C→R2D. The kinetic parameters of these processes were also obtained.
Development of metal cyanurates: The example of barium cyanurate (BCY)
Kalmutzki, Markus,Str?bele, Markus,Bettinger, Holger F.,Meyer, H.-Jürgen
, p. 2536 - 2543 (2014)
Metal cyanurate compounds were prepared by means of solid-state metathesis reactions between a metal halide and an alkali cyanurate. Following this procedure, a mixture of BaCl2 and K(OCN) was heated in a fused silica tube at 575 C to yield highly crystalline barium cyanurate. This reaction was analyzed by differential scanning calorimetry (DSC) measurements and involves a cyclotrimerization of cyanate ions to yield the cyclic cyanurate (O 3C3N3)3- ion. The crystal structure of Ba3(O3C3N3)2 was refined by single-crystal X-ray diffraction, and the presence of cyanurate was verified by infrared spectroscopy.
Synthesis, structure, and luminescence of rare earth cyanurates
Kalmutzki, Markus,Str?bele, Markus,Enseling, David,Jüstel, Thomas,Meyer, H.-Jürgen
, p. 134 - 140 (2015)
Rare earth cyanurates were prepared by exothermic solid-state metathesis reactions of appropriate proportions of A(OCN) (A = K, Rb, Cs) and RECl3 (RE = La, Ce, Pr) at 500 °C. A DTA study of this mixture revealed the reaction to occur around 450 °C. The crystal structure of RbLa2Cl(O3C3N3)2 was refined from a powder X-ray diffraction pattern. Homologous ARE2Cl(O3C3N3)2 compounds with A = K, Rb, Cs and RE = La, Ce, Pr were indexed isotypically. Photoluminescence and reflection properties of doped samples and an infrared study are reported.
Catalyst + chemodosimeter → chemosensor: Incorporation of catalytic functionality in an indicator displacement assay to realize reversible chemosensing detection
Chow, Cheuk-Fai,Gong, Cheng-Bin,Shen, Chang,Tang, Qian
, p. 5029 - 5035 (2020)
A new bimetallic complex, (CN)3FeII(tppz)CuIICl (tppz = 2,3,5,6-tetra(2′-pyridyl)pyrazine) including an Fe(ii)-diimine indicator and a dual functional Cu(ii) receptor/catalyst, was synthesized to demonstrate the concept of indicator/catalyst displacement assay for the simultaneous detection and detoxification of cyanide. The catalytic degradation property in the assay was necessary for making the detecting system reversible, which the traditional indicator displacement assays could never achieve. After the realization of this new property, silica-gel-based solid-supporting complex 1 was fabricated for application in a device, which was demonstrated for its use in the naked-eye detection and degradation of cyanide in tap, river, and underground water samples in a repeatable and real-time manner, even in the presence of interfering anions (CH3COO-, N3-, HCO3-, Cl-, NO3-, HPO42-, SO42-, SCN-, and OCN-). Within 300 min, cyanide was quantitatively oxidized into the less toxic cyanate by 1 in the presence of H2O2. The detection limit of 1 for cyanide was found to be 1.16 × 10-4 M (3.02 mg L-1).
Development of Metal Cyanurates: The Example of Barium Cyanurate (BCY)
Kalmutzki, Markus,Str?bele, Markus,Bettinger, Holger F.,Meyer, H.-Jürgen
, p. 2536 - 2543 (2015/04/27)
Metal cyanurate compounds were prepared by means of solid-state metathesis reactions between a metal halide and an alkali cyanurate. Following this procedure, a mixture of BaCl2 and K(OCN) was heated in a fused silica tube at 575 °C to yield highly crystalline barium cyanurate. This reaction was analyzed by differential scanning calorimetry (DSC) measurements and involves a cyclotrimerization of cyanate ions to yield the cyclic cyanurate (O3C3N3)3- ion. The crystal structure of Ba3(O3C3N3)2 was refined by single-crystal X-ray diffraction, and the presence of cyanurate was verified by infrared spectroscopy.
Kinetics and Mechanism of Redox Reactions in Partially Aqueous Media. Oxidation of Thiocyanate Ion by Dichloramine-T
Gowda, Thimme,Bhat, Ishwara
, p. 150 - 153 (2007/10/02)
Kinetics of oxidation of thiocyanate ion by dichloramine-T (DCT), a source of positive chlorine, has been investigated in 50percent (v/v) aqueous methanol medium.The rate foolowed first order kinetics in , nearly first order in -> and a slight fractional order in +>.Effects of the added reaction products, p-toluenesulphonamide and chloride, and variations in ionic strength and dielectric constant of the reaction medium on the rate have also been investigated.Mechanisms consistent with the observed kinetics have been proposed and the corresponding rate laws deduced.The rate constants for the rate controlling steps have been calculated as functions of temperature.The activation parameters have been computed using these constants.
