305 research outputs found
Synthesis, Crystal Structure, and Spectral Characteristics of N-(tert-Butyl) aminomethanesulfonic Acid
A new method of the synthesis of N-(tert-butyl)aminomethanesulfonic acid in the system SO2–(CH3)3CNH2–CH2O–H2O was developed. The target compound [(CH3)3С]NHCH2SO3H was characterized by means of X-ray diffraction analysis, IR spectroscopy, and mass spectrometry
Synthesis and Structure of Aminoguanidinium Sulfite Monohydrate
Abstract—The reaction between sulfur(IV) oxide and an aqueous suspension of aminoguanidinium hydro
carbonate yields (CN4H7)2SO3 ⋅ H2O, an “onium” sulfite, which has been characterized by Xray diffraction
and IR spectroscopy and mass spectrometry. The structure of the salt is stabilized by numerous Hbonds, such
as NH⋅⋅⋅O, OH⋅⋅⋅O, and NH⋅⋅⋅N. The incorporation of pyramidal ions into the network of Hbonds is
accompanied by the lowering of their symmetry in comparison with C3v, thus complicating the IR spectra of
the salt in the region where the vibrations of the anion appear
Synthesis, Crystal Structure, Vibrational Spectra, and Thermochemical Transformations of Tris(hydroxymethyl)aminomethane
Abstract—A practically promising compound, tris(hydroxymethyl)aminomethane sulfate ((TRISH)2SO4,
C8H24N2O10S) was synthesized and studied by a set of experimental methods (elemental analysis, IR and
Raman spectroscopy, mass spectrometry, thermogravimetry)
Products of Interaction between Sulfur(IV) Oxide and Aqueous Solutions of Hexamethylendiamine and tertButylamine: The Crystal Structure of Hexamethylenediammonium Sulfate Dihydrate
The possibility of mild SO2 oxidation in sulfur(IV) oxide–alkylamine–water–oxygen systems is demonstrated to yield onium sulfates
Cs2Bi(PO4)(WO4)
Dicaesium bismuth(III) phosphate(V) tungstate(VI), Cs2Bi(PO4)(WO4), has been synthesized during complex investigation in a molten pseudo-quaternary Cs2O–Bi2O3–P2O5–WO3 system. It is isotypic with K2Bi(PO4)(WO4). The three-dimensional framework is built up from [Bi(PO4)(WO4)] nets, which are organized by adhesion of [BiPO4] layers and [WO4] tetrahedra above and below of those layers. The interstitial space is occupied by Cs atoms. Bi, W and P atoms lie on crystallographic twofold axes
Onium Salts of Sulfur-Containing Oxyanions Resulting from Reaction of Sulfur(IV) Oxide with Aqueous Solutions of 1,2-Diamines and Morpholine
Reaction products have been isolated from SO2–L–H2O–О2 systems (L = ethylenediamine,
N,N,N',N'-tetramethylethylenediamine, piperazine, and morpholine) as onium salts
[H3NCH2CH2NH3]SO4, [(CH3)2NHCH2CH2NH(CH3)2]SO4, [(CH3)2NHCH2CH2NH(CH3)2]S2O6 ⋅
H2O, [C4H8N2H4]SO3 ⋅ H2O, [C4H8N2H4]S2O6, [C4H8N2H4]SO4 ⋅ H2O, [O(C2H4)2NH2]2SO4 ⋅ H2O. The
prepared compounds have been characterized by X-ray diffraction analysis, X-ray powder diffraction, IR and
mass spectroscopy
Interaction Products in the System Sulfur Dioxide–2,2′-Bipyridine–Water. Van der Waals Clathrates
Crystallization of 2,2′-bipyridine from aqueous solution containing sulfur(IV) oxide afforded clathrates with the composition (bipy)k·(SO2)m·(H2O)n. X-Ray amorphous guest SO2 molecules occupy voids in the crystal lattice of 2,2′-bipyridine without distortion of its structure. The isolated compounds were
characterized by elemental analyses, X-ray diffraction data, and IR, NMR, and mass spectra
Synthesis and Structure of N(Hydroxyethyl)ethylenediammonium Sulfite Monohydrate
A reaction between sulfur(IV) oxide and aqueous N(2hydroxyethyl)ethylenediamine yields
onium sulfite of composition (HOCH2CH2NH2CH2CH2NH3)SO3 ⋅ H2O, which has been characterized by
Xray diffraction, IR spectroscopy, and mass spectrometry. The threedimensional structure of the salt is stabilized by numerous hydrogen bonds, such as NH⋅⋅⋅O and OH⋅⋅⋅O
KMg0.09Fe1.91(PO4)2
KMg0.09Fe1.91(PO4)2, potassium [iron(II)/magnesium] iron(III) bis(orthophosphate), is a solid solution derived from compounds with general formula KM
IIFe(PO4)2 (M
II = Fe, Cu), in which the Mg atoms substitute Fe atoms only in the octahedrally surrounded sites. The framework of the structure is built up from [FeO5] trigonal bipyramids and [MO6] (M = (Fe, Mg) octahedra sharing corners and edges and connected by two types of bridging PO4 tetrahedra. The K+ cations are nine-coordinated and are situated in channels running along [101]
Preparation and Some Physicochemical Properties of Benzylammonium Sulfates
New method of preparation of multisubstituted benzylammonium cations via interaction in the
SO2–L–H2O systems (L is benzylamine, α-phenylethylamine, N,N-dimethylbenzylamine, or dibenzylamine)
has been developed. The products have been studied by X-ray diffraction, IR, Raman spectroscopy, and mass
spectrometry
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