- Photolysis of isothiocyanic acid HNCS in low-temperature matrices. Infrared detection of HSCN and HSNC isomers
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A combination of matrix isolation technique and Fourier transform infrared spectroscopy has been used to study the low-temperature photochemistry of isothiocyanic acid HNCS. Near UV photolysis with a medium-pressure mercury lamp of the matrix isolated HNCS/DNCS precursor in nitrogen and argon led to the formation of two unobserved, so far, isomers: thiocyanic acid HSCN and isothiofulminic acid HSNC and their deuterated analogs. Both species are formed as primary products presumably via two reaction channels: formation of the [HNCS] and hydrogen migration leading to the HSCN molecule and formation of the [HNCS] followed by rearrangement to HSCN and HSNC species.
- Wierzejewska, Maria,Mielke, Zofia
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- The layered coordination polymer Bi(SCN)3·H2O
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Yellow crystals of Bi(SCN)3·H2O are obtained by reacting (BiO)2CO3 and HSCN in aqueous solution. X-ray diffraction on a single-crystal revealed a triclinic lattice (space group P1) with a = 843.6(2) pm, b = 920.4 (2) pm, c = 1210.7(2) pm, α = 109.16(3) °, β = 109.06(3) °, γ = 90.22(3) °, V = 832.8(3)·10 pm, and Z = 4. All thiocyanate anions bind with both ends to different cations. The coordination network expands in plane layers parallel (1 1 0). The water molecule coordinates one of the two independent Bi3+ cations. Dehydration sets in at 100 °C, followed by stepwise thermal decomposition to Bi2S3.
- Koch, Gregor,Ruck, Michael
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- Compounds containing a N-heteroaryl moiety linked to fused ring moieties for the inhibition of NAD(P)H oxidases and platelet activation
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The invention relates to compounds containing a N-heteroaryl moiety, which is linked via oxygen, sulfur or nitrogen, or via a methylene bridge and oxygen, sulfur or nitrogen to a fused ring moiety, in particular to the 1,2,3-triazolo[4,5-d]pyrimidine-7-yl radical. The invention also relates to a process for the preparation of said compounds and the use thereof in drugs for the treatment of NAD(P)H oxidases-related diseases and disorders and inhibition of platelet activation.
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Page/Page column 87
(2008/06/13)
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- Chalcone Aziridines. III. Reaction of trans-Chalcone Aziridines with Isocyanates, Isothiocyanates and HSCN
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The reaction of 2-aryl-3-aroyl-aziridines 1 with phenyl isocyanate or mustard oils leads to N-phenylcarbamoyl derivatives 2a-q and 2-amino-thiazolines 6a, h, n, r, respectively.From 2m and NaI the imidazolin-2-one 3 was obtained.By treatment of 2 with HSCN the regioisomers 2(3)-ureido-3(2)-rhodano-1.3-diaryl-propan-1-ones 4a, h, m, and 5f were formed.
- Weber, Fritz Gerd,Liepert, Harald,Koeppel, Hubert
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p. 612 - 620
(2007/10/02)
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- Kinetics and Mechanism of Reaction of Thiourea Nitrite in a Highly Ionic Medium
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The title reaction proceeds by a multistep mechanism with two major paths.Production of colloidal sulphur is also noted.A novel mechanistic approach is proposed, based on the kinetic data obtained and some previous work.The reaction is shown to be a second-order process involving an unusual S-nitrosation of thiourea.
- Pare, J. R. Jocelyn
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p. 1116 - 1119
(2007/10/02)
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