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Article
Synthesis and antimetastatic activity of metal complexes based on substituted pyridinecarboxylic acid amides and platinum tetrachloride
Previously unreported platinum tetrachloride derivatives have been synthesized via the interaction between dipotassium- and disodiumhexachloroplatinates with substituted amides of nicotinic and isonicotinic ac...
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Article
Crystal structures of some crystal hydrates of binary molybdates
The structures of a series of binary molybdates with the lithium cation LiM(MoO4) · H2O (M = K+, Na+, Rb+, NH 4 + ) are analyzed and compared. Except for LiNa(M...
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Article
Coordination properties of the anionic fragments of the platinum group metal complexes in isle crystal structures
A number of Pd and Pt complexes were considered with similar structures and with the most stable states of the metal oxidation (+2 and +2, +4 for Pd and Pt, respectively). The majority of binuclear complex fra...
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Article
Electrochemical properties of systems with rubidium-tungsten-oxide bronze
Single-phase rubidium-tungsten-oxide bronze of the composition Rb0.3WO3 with hexagonal syngony (a = 0.7387 ± 0.0004 nm, c = 0.7547 ± 0.0004 nm) is synthesized. The ionic constituent of the bronze conductivity, de...
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Article
Synthesis and molecular structure of 3-(2-aryl-2-oxoethyl)-3-methoxy-2-oxo-2,3-dihydroimidazo-[1,2-a]pyridine hydrochlorides
Reactions between 2-pyridylamides of Z-4-aryl-2-hydroxy-4-oxobut-2-enoic acids with diazomethane have been used to synthesize 3-(2-aryl-2-oxoethyl)-3-methoxy-2-oxo-2,3-dihydroimidazo[1,2-a]pyridines, which for...
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Article
Exchange of sodium and silver ions in Na3Sc2(PO4)3 single crystals
Sodium-and silver-ion exchange in single crystals of two polymorphous modifications of the Na3Sc2(PO4)3 compound has been studied. It is established that in the process of ion exchange, the samples undergo phase ...
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Article
X-ray diffraction study of phase transitions in Na3Sc2(PO4)3 and Ag3Sc2(PO4)3 single crystals in temperature range from 160 to 500 K
Two phase transitions are revealed for the first time in Ag3Sc2(PO4)3 single crystals in the vicinity of the temperatures 303 and 165–180 K. It is established that the phase transition at 303 K corresponds to the...
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Article
Crystal Structure and Properties of Rb4H2I2O10 · 4H2O
Single crystals of the Rb4H2I2O10· 4H2O were synthesized for the first time and studied by X-ray diffraction analysis. The crystals are monoclinic, a = 7.321(6) Å, b = 12.599(8) Å, c = 8.198(8) Å, β = 96.30(7)°,
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Article
Chemistry of acyl(imidoyl)ketenes. 8*. Thermolysis of 3-alkoxycarbonyl- 5-phenyl-1,2,4,5-tetrahydropyrrolo[1,2-a]- quinoxaline-1,2,4-triones. Structure of 2-(3-oxo-4-phenyl-3,4-dihydro-2-quinoxalinyl)- 2,4-di(ethoxycarbonyl)-6-phenyl-2,3,5,6-tetrahydro- 1h-pyrido[1,2-a]quinoxaline-1,3,5-trione
3-Alkoxycarbonylmethylene-1-phenyl-1,2,3,4-tetrahydro-2-quinoxalones, obtained by the interaction of dialkyl esters of oxaloacetic acid and N-phenyl-o-phenylenediamine, react with oxalyl chloride with the form...
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Article
Chemistry of Acyl(imidoyl)ketenes. 8. Thermolysis of 3-Alkoxycarbonyl-5-phenyl-1,2,4,5-tetrahydropyrrolo[1,2-a]-quinoxaline-1,2,4-triones. Structure of 2-(3-oxo-4-phenyl-3,4-dihydro-2-quinoxalinyl)-2,4-di(ethoxycarbonyl)-6-phenyl-2,3,5,6-tetrahydro-1h-pyrido[1,2-a]quinoxaline-1,3,5-trione
3-Alkoxycarbonylmethylene-1-phenyl-1,2,3,4-tetrahydro-2-quinoxalones, obtained by the interaction of dialkyl esters of oxaloacetic acid and N-phenyl-o-phenylenediamine, react with oxalyl chloride with the form...
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Article
Disubstituted Rubidium Orthoperiodate Rb2H3IO6: Crystal and Molecular Structures and Properties
The crystal and molecular structures of acid salt Rb2H3IO6 were determined. The anion part of the structure is united via a hydrogen bonding system to form a layer parallel to the xy plane. The proton conductivit...
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Article
Mixed Salt Cs2[I(OH)3O3] · CsSO4(H)H5IO6: Synthesis, Crystal Structure, and Properties
The mixed salt Cs2[I(OH)3O3] · CsSO4(H)H5IO6 (I) was synthesized for the first time, and its structure and properties were studied by X-ray diffraction, IR and Raman spectroscopies, impedance measurements and DTA...
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Article
Synthesis, Crystal Structure, and Properties of Mixed Salt Cs2SO4 · H6TeO6
Mixed salt Cs2SO4 · H6TeO6 (I) is synthesized and its structure and properties are studied by X-ray diffraction analysis, IR and Raman spectroscopies, impedance measurements, and differential thermal analysis. Co...
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Article
Interaction of 5-aryl-4-quinoxalinyl-2,3-dihydro-2,3-furandiones with mesitylamine and methyl(phenyl)hydrazine. Synthesis and crystal and molecular structure of 2-(1-mesityl-4,5-dioxo-2-phenyl-4,5-dihydro-3-pyrollyl)-3-phenylquinoxaline
The interaction of 5-aryl-4-quinoxaline-2,3-dihydro-2,3-furandiones with mesitylamine and methyl(phenyl) hydrazine results in the formation of 1-substituted 5-aryl-4-quinoxalinyl-2,3-dihydro-2,3-pyrrolediones....
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Article
Interaction of 1-Benzyl-4-benzoyl-5-phenyl-2,3-dihydro-2,3-pyrroledione with Ketene Diethylacetal: Synthesis and Crystal and Molecular Structure of 1-Benzyl-4-benzoyl-3-hydroxy-5-phenyl-5-ethoxycarbonylmethyl-2,5-dihydro-2-pyrrolone
1-Benzyl-4-benzoyl-5-phenyl-2,3-dihydro-2,3-pyrroledione reacts with ketene diethylacetal, forming 1-benzyl-4-benzoyl-3-hydroxy-5-phenyl-5-ethoxycarbonylmethyl-2,5-dihydro-2-pyrrolone, whose crystal and molecu...
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Article
Reactions of ethyl methylsulfonylpyruvate and its sodium salt with a mixture of aromatic aldehyde and arylamine
The reactions of ethyl methylsulfonylpyruvate and its sodium salt with a mixture of aromatic aldehyde and arylamine afforded 1,5-diaryl-3-hydroxy-4-methylsulfonyl-3-pyrrolin-2-ones. The spatial structure of 1,...
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Article
Interaction of 3-Ethoxycarbonylmethylene-1,2,3,4-tetrahydro-2-quinoxalone with Oxalyl Chloride. Synthesis and Crystal and Molecular Structure of 4-Ethoxycarbonyl-3,5-dihydro-2H-pyrano[2,3-b]quinoxaline-2,3-dione
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Article
Chemistry of acyl(imidoyl)ketenes. 7. Synthesis and thermolysis of 5-aryl-4-quinoxalinyl-2,3-dihydrofuran-2,3-diones
3-Aryl-Z-2-aroylmethylidene-1,2-dihydroquinoxalines react with oxalyl chloride to form 3-aryl-2-(2-aryl-4,5-dioxo-4,5-dihydro-3-furyl)quinoxalines, whose thermal decarbonylation generate 5-aryl-2-3(arylquinoxalin...
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Article
Synthesis and Crystal Structure of 2,3-Bis(dinitrofluoromethyl)-1,4-dioxane
For the first time the dinitromethyl group was modified to dinitrofluoromethyl group in the series of aliphatic polynitro compounds in the case of the reaction of 1,1,4,4-tetranitro-2,3-butanediol diacetate wi...
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Article
Crystal Structure and Properties of Acid Salt of Orthoperiodic Acid CsH9I2O12
The acid salt of orthoperiodic acid CsH9I2O12crystallizes in the monoclinic system: base-centered unit cell, space group Cc. Unit cell parameters: a=18.473(5) Å, b= 5.439(2) Å, c= 10.481(3) Å, β = 99.73°. The cry...
