Букирева, 15, Пермь, Российская Федерация, 614990 E-mail: maxperm@yandex.ru Алексей Владимирович Соломонов Weizmann Institute of Science, Herzl st., 234, Rehovot, 76000, Israel E-mail: deus-lex@yandex.ru КРИСТАЛЛИЧЕСКАЯ СТРУКТУРА БИС[(ДИАМИНОМЕТИЛ-1-ЕН)АМИНОТИОМЕТИЛАММОНИЙ] СУЛЬФАТА В данной работе представлены данные рентгеноструктурного анализа монокристалла бис[(диаминометил-1-ен)аминотиометиламмоний] сульфата, образующегося на промежуточной стадии синтеза 2-имино-4-тиобиурета. <...> Так как промежуточный продукт на стадии синтеза 2-имино-4-тиобиурета выделяется в виде кристаллического порошка, а не остается в растворе, предложена измененная схема синтеза. <...> V. Solomonov ) Department of Fine Organic Synthesis, Ivanovo State University of Chemistry and Technology, Sheremetievskiy ave., 7, Ivanovo, 153000, Russia E-mail: danilova@isuct.ru ( Maxim V. Dmitriev Department of Organic Chemistry, Perm State University, Bukireva st., 15, Perm, 614990, Russia E-mail: maxperm@yandex.ru Aleksey V. Solomonov Weizmann Institute of Science, Herzl st., 234, Rehovot, 76000, Israel E-mail: deus-lex@yandex.ru CRYSTAL STRUCTURE OF BIS[1-(DIAMINOMETHYLENE)-THIOURON-1-IUM] SULFATE In this work crystal data of bis[1-(diaminomethylene)-thiouron-1-ium] sulfate is shown. <...> Comparative characteristics of thiourea and its known salts are demonstrated. <...> It is known, that derivatives of thiourea have several tautomeric forms, which can be different in crystalline state or in solution. <...> A full set of Xray diffraction data was deposited in the Cambridge Structural Database (deposit CCDC 1421710) and it can be gotten from the site www.ccdc.cam.ac.uk/data_request/cif. <...> Key words: bis[1-(diaminomethylene)-thiouron-1-ium] sulfate, thiourea, X-ray analysis INTRODUCTION 1-(Diaminomethylene)thiourea (1) and its imino tautomer, namely 2-imino-4-thiobiuret (2) (Scheme 1), have several potential coordination modes and can form complexes with metal ions [1]. <...> It is known, that N,N-coordination is characteristic for basic solution and S,N-coordination was observed in neutral and weakly acid media [4]. 1-(Diaminomethylene)thiourea forms salts both with inorganic and with organic acids. <...> The crystal structures of several salts of 1-(diaminomethylene)thiourea are <...>