Condensed systems based on 4-amino-3-mercapto-1,2,4-triazole

1,2,4-Triazolo[3,4-b]-1,3,4-thiadiazines, hydrazones, and -thio adducts were obtained by reactions of 4-amino-3-mercapto-1,2,4-triazole with -bromoacetophenones, aldehydes, and ,-unsaturated ketones. Conditions that promote the cyclocondensation of the -thio adducts to the previously undescribed 1,2,4-triazolo[3,4-b]-1,3,4-thiadiazepines were found. The chemical and spectral properties of the compounds obtained are discussed.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 267–272, February, 1992.     

35Cl NQR spectra of bis(chlorobenzene)chromium(0) and bis(chlorobenzene) chromium(I) iodide

Conclusion A study was carried out on the³⁵Cl NQR spectra of bis(chlorobenzene)chromium(O) and bis(chlorobenzene)chromium(I) iodide. The coordination of chlorobenzene with the charged ClC₆H₆Cr⁺ fragment leads to a sharp decrease in electron density. This effect is significantly greater than that resulting from the coordination of chlorobenzene with the ClC₆H₅Cr group in neutral bis(chlorobenzene)chromium.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 12, pp. 2801–2803, December, 1986.     

Synthesis of substituted nitriles of dibenzenechromium series using chromium vapors

Conclusions Some mixed bisarenechromium complexes, namely toluene (benzonitrile) chromium, anisole (benzonitrile) chromium, and acetophenone (benzonitrile) chromium were obtained by the reaction of Cr with two aromatic compounds in the vapor phase.Translated from Izvestiya Akademli Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 420–422, February, 1984.The authors thank N. I. Vasyukova and A. G. Makarovskaya for making the mass spectrometric and GLC studies.     

Preparation of bisarenechromium π complexes from phenylacetylene and chromium vapors

Conclusion A mixture of isomeric 1,2,4- and 1,3,5-triphenylbenzenes and their complexes with chromium and also organic and organochromium polymers were formed in the reaction of phenylacetylene with chromium vapors under high vacuum.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 10, pp. 2307–2309, October, 1986.The authors thank S. P. Solodovnikow for recording the EPR spectrum and N. I. Vasyukova for recording the mass spectrum.     

A study of the products from the reaction of cyanation of phenylferrocene

Summary We have obtained the amides of 1,2-, 1,3-, and 1,1'-phenylferrocene carboxylic acids. On cyanation of phenylferrocene, the nitrile group enters the ferrocene ring exclusively.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 907–909, May, 1965 Original article submitted July 29, 1964