ISSN 0036-0236, Russian Journal of Inorganic Chemistry, 2014, Vol. 59, No. 6, pp. 541–544. © Pleiades Publishing, Ltd., 2014. Original Russian Text © R.E. Khoma, V.O. Gelmboldt, O.V. Shishkin, V.N. Baumer, A.N. Puzan, A.A. Ennan, I.M. Rakipov, 2014, published in Zhurnal Neorganicheskoi Khimii, 2014, Vol. 59, No. 6, pp. 716–719. 541 N-(2-hydroxyethyl)ethylenediamine (HEEDA) and its derivatives are used as fuel additives [1], chelat- ing agents [2], epoxy hardeners, emulsifiers, deter- gents, corrosion inhibitors [3], surfactants [4], and comonomers in the production of polyester materials contacting with food, enzymes, and flavorings [5]. In reactions with acids, HEEDA can be protonated at both primary and secondary amino groups; and ace- tate and formate salts of HEEDA manifest the proper- ties of ionic liquids [6]. Ethanolammonium onium sulfites and hydro- sulfites of unctuous consistency have been synthesized and spectrally characterized by us earlier [7, 8]. The fact that the structurally studied organic sulfites are exhausted by tetramethylguanidinium hydrosulfite [9] and aminoguanidinium sulfite monohydrate [10] seems to be due to the ease for the sulfites to convert into sulfates as a result of “autooxidation” [11, 12]. In this work, we have studied the structure and spectral characteristics of N-(2-hydroxyethyl)eth- ylenediammonium sulfite monohydrate (HOCH 2 CH 2 NH 2 CH 2 CH 2 NH 3 )SO 3 ⋅ H 2 O (I), the new onium sulfite produced in a reaction between sul- fur(IV) oxide and aqueous HEEDA. EXPERIMENTAL Synthesis of compound I. A solution of N-(hydroxymethyl)ethylenediamine (0.05 mol) in water (20 mL) was poured into a temperature-con- trolled cell, and gaseous SO 2 was passed through it at 0°С at a rate of 50 mL/min until pH < 1.0 was attained. The solution was allowed to stand at a temperature <15°С in air until water vaporized. The separated color- less crystalline product I (10.04 g; yield, 98.3%) was not subjected to any additional purification. Nitrogen, carbon, and hydrogen were determined on a CHN elemental analyzer; sulfur was determined by the Schôniger method [13]. For C 4 H 16 N 2 O 5 S, anal. calcd. (%): C, 23.52; N, 13.72; S, 15.70; H, 7.90. Found (%): C, 22.81; N, 13.34; S, 16.41; H, 8.09. IR spectra were recorded on a PerkinElmer Spec- trum BX II FT-IR System spectrometer (range: 4000–350 cm –1 ; KBr pellets). Electron-impact (EI) mass spectra were taken on an MX-1321 mass spectrometer (direct injection; energy of ionizing electrons: 70 eV). Fast atom bombardment (FAB) mass spectra were taken on a VG 7070 mass spectrometer (ions were des- orbed from a liquid matrix using a beam of argon atoms with an energy of 8 keV). EI mass spectrum of m/z = 87, I = 6%; m/z = 75, I = 11%; [M HEEDA –CH 2 OH + H] + (m/z = 74, I = 56%); m/z = 65, I = 6%; [SO 2 ] + (m/z = 64, I = 14%); m/z = 57, I = 41%; m/z = 56, I = 24%; m/z = 45, I = 52%; m/z = 46, I = 9%; m/z = 43, I = 10%; m/z = 34, I = 12%; m/z = 32, I = 100%; m/z = 30, I = 92%. The characteristics of HEEDA fragmentation products in Synthesis and Structure of N-(Hydroxyethyl)ethylenediammonium Sulfite Monohydrate R. E. Khoma a, b , V. O. Gelmboldt c , O. V. Shishkin d, e , V. N. Baumer d, e , A. N. Puzan d , A. A. Ennan a , and I. M. Rakipov f a Physicochemical Institute for Human and Environment Protection, Ministry of Education and Science of Ukraine, National Academy of Sciences of Ukraine, ul. Preobrazhenskaya 3, Odessa, 65026 Ukraine b Mechnikov National University, ul. Dvoryanskaya 2, Odessa, 65025 Ukraine c Odessa National Medical University, per. Valikhovskiy 2, Odessa, 65026 Ukraine d Institute for Single Crystals, National Academy of Sciences of Ukraine, pr. Lenina 60, Kharkiv, 61178 Ukraine e Kharkiv National University, pl. Svobody 4, Kharkiv, 61077 Ukraine f Bogatskii Physicochemical Institute, National Academy of Sciences of Ukraine, Lustdorfskaya doroga 86, Odessa, 65080 Ukraine e-mail: rek@onu.edu.ua, r_khoma@farlep.net Received December 2, 2013 Abstract—A reaction between sulfur(IV) oxide and aqueous N-(2-hydroxyethyl)ethylenediamine yields onium sulfite of composition (HOCH 2 CH 2 NH 2 CH 2 CH 2 NH 3 )SO 3 ⋅ H 2 O, which has been characterized by X-ray diffraction, IR spectroscopy, and mass spectrometry. The three-dimensional structure of the salt is sta- bilized by numerous hydrogen bonds, such as NH⋅⋅⋅O and OH⋅⋅⋅O. DOI: 10.1134/S0036023614060096 COORDINATION COMPOUNDS