2,3,4-Tri-O-acetyl-1-azido-1-deoxy-b-D-arabinopyranosyl cyanide - CAS 168567-91-7
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1.Cyanide Scavenging by a Cobalt Schiff-base Macrocycle: A Cost-effective Alternative to Corrinoids.
Lopez-Manzano E, Cronican AA, Frawley KL, Peterson J, Pearce LL. Chem Res Toxicol. 2016 Apr 22. [Epub ahead of print]
The complex of cobalt(II) with the ligand 2,12-dimethyl-3,7,11,17-tetraazabicyclo-[11.3.1]heptadeca-1(7)2,11,13,15-pentaene (CoN4[11.3.1]) has been shown to bind two molecules of cyanide in a cooperative fashion with an association constant of 2.7 (± 0.2) x 105. In vivo, irrespective of whether initially administered as the Co(II) or the Co(III) cation, EPR spectroscopic measurements on blood samples show that at physiological levels of reductant (principally ascorbate) CoN4[11.3.1] becomes quantitatively reduced to the Co(II) form. However, following addition of sodium cyanide, a dicyano Co(III) species is formed, both in blood and in buffered aqueous solution at neutral pH. In keeping with the other cobalt-containing cyanide-scavenging macrocycles cobinamide and cobalt(III) meso-tetra(4-N-methylpyridyl)porphine, we found that CoN4[11.3.1] exhibits rapid oxygen turnover in the presence of the physiological reductant ascorbate. This behavior could potentially render CoN4[11.
2.Single-Chain Magnets Based on Octacyanotungstate with the Highest Energy Barriers for Cyanide Compounds.
Wei RM1,2, Cao F1, Li J1, Yang L1, Han Y1, Zhang XL2, Zhang Z3, Wang XY1, Song Y1. Sci Rep. 2016 Apr 13;6:24372. doi: 10.1038/srep24372.
By introducing large counter cations as the spacer, two isolated 3, 3-ladder compounds, (Ph4P)[Co(II)(3-Mepy)2.7(H2O)0.3W(V)(CN)8]·0.6H2O (1) and (Ph4As)[Co(II)(3-Mepy)3W(V)(CN)8] (2, 3-Mepy = 3-methylpyridine), were synthesized and characterized. Static and dynamic magnetic characterizations reveal that compounds 1 and 2 both behave as the single-chain magnets (SCMs) with very high energy barriers: 252(9) K for 1 and 224(7) K for 2, respectively. These two compounds display the highest relaxation barriers for cyano-bridged SCMs and are preceded only by two cobalt(II)-radical compounds among all SCMs. Meanwhile, a large coercive field of 26.2 kOe (1) and 22.6 kOe (2) were observed at 1.8 K.
3.Anodic oxidation of coke oven wastewater: Multiparameter optimization for simultaneous removal of cyanide, COD and phenol.
Sasidharan Pillai IM1, Gupta AK2. J Environ Manage. 2016 Jul 1;176:45-53. doi: 10.1016/j.jenvman.2016.03.021. Epub 2016 Mar 31.
Anodic oxidation of industrial wastewater from a coke oven plant having cyanide including thiocyanate (280 mg L(-1)), chemical oxygen demand (COD - 1520 mg L(-1)) and phenol (900 mg L(-1)) was carried out using a novel PbO2 anode. From univariate optimization study, low NaCl concentration, acidic pH, high current density and temperature were found beneficial for the oxidation. Multivariate optimization was performed with cyanide including thiocyanate, COD and phenol removal efficiencies as a function of changes in initial pH, NaCl concentration and current density using Box-Behnken experimental design. Optimization was performed for maximizing the removal efficiencies of these three parameters simultaneously. The optimum condition was obtained as initial pH 3.95, NaCl as 1 g L(-1) and current density of 6.7 mA cm(-2), for which the predicted removal efficiencies were 99.6%, 86.7% and 99.7% for cyanide including thiocyanate, COD and phenol respectively.
4.Charge-Transfer Phase Transition of a Cyanide-Bridged FeII /FeIII Coordination Polymer.
Zhang K1, Kang S2, Yao ZS1, Nakamura K1, Yamamoto T3, Einaga Y3, Azuma N4, Miyazaki Y4, Nakano M4, Kanegawa S1, Sato O5. Angew Chem Int Ed Engl. 2016 Apr 8. doi: 10.1002/anie.201601526. [Epub ahead of print]
Heterometallic Prussian blue analogues are known to exhibit thermally induced charge transfer, resulting in switching of optical and magnetic properties. However, charge-transfer phase transitions have not been reported for the simplest FeFe cyanide-bridged systems. A mixed-valence FeII /FeIII cyanide-bridged coordination polymer, {[Fe(Tp)(CN)3 ]2 Fe(bpe)⋅5 H2 O}n , which demonstrates a thermally induced charge-transfer phase transition, is described. As a result of the charge transfer during this phase transition, the high-spin state of the whole system does not change to a low-spin state. This result is in contrast to FeCo cyanide-bridged systems that exhibit charge-transfer-induced spin transitions.
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CAS 168567-91-7 2,3,4-Tri-O-acetyl-1-azido-1-deoxy-b-D-arabinopyranosyl cyanide

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