594-14-9Relevant articles and documents
Guanidinium sulfates as directors of noncentrosymmetric structures
Brummel, Beau R.,Lee, Kinsey G.,Kolis, Joseph W.,Whitehead, Daniel C.,McMillen, Colin D.
, p. 1643 - 1656 (2021/02/26)
The structures of seven compounds based on guanidinium cations, isolated sulfate anions, and additional organic cations and solvent molecules are reported. All seven compounds, (C(NH2)3)2(SO4) (1), (C(NH2)3)3(C5H6N)(SO4)2(2), (C(NH2)3)3(C5H6N)(SO4)2·H2O (3), (C(NH2)3)3(C5H6N)(SO4)2·CH3OH (4), (C(NH2)3)11(C5H6N)(SO4)6·2.5C2H5OH (5), (C(NH2)3)3(C6H16N)(SO4)2(6), and (C(NH2)3)2(C20H26N2O2)(SO4)2(7) crystallize without a center of symmetry, and are built of related motifs of six-membered ringsviahydrogen bonding of three guanidinium cations and three sulfate anions. These six-membered rings form extended sheets and frameworks through additional hydrogen bonding interactions. The presence of additional cations and solvent molecules in varying ratios add structural diversity by modifying the guanidinium sulfate frameworks, but retaining the acentricity of the structures. The study reveals a remarkable tendency for these guanidinium sulfate frameworks to crystallize without a center of symmetry, and furthermore, in polar or chiral space groups. This provides a potential pathway for the use of hydrogen bonding interactions to design structures having interesting physical or nonlinear optical properties.
Thermally stable energetic salts based on 3-nitramino-4-tetrazolefurazan
Huang, Haifeng,Shi, Yameng,Li, Ying,Liu, Yanfang,Yang, Jun
, p. 64568 - 64574 (2016/07/21)
In order to develop new energetic materials with high energy and low sensitivity, a series of nitrogen-rich energetic salts based on 3-nitramino-4-tetrazolefurazan were conveniently synthesized through nitration, neutralization and metathesis reaction. All energetic salts were fully characterized by NMR (1H, 13C), IR and elemental analysis. Furthermore, ammonium salt (2) was confirmed by 15N NMR and hydroxylammonium salt (5) was confirmed by single-crystal X-ray diffraction. Salt 5 crystallized in triclinic space group P1 with four hydroxylammonium cations and two NATF anions per unit cell at a density of 1.815 g cm-3. The densities of the salts are in the range of 1.621 (6) to 1.815 g cm-3 (5). Due to the two nitrogen-rich cations in the salts, they show high positive enthalpies of formation falling between 299.2 kJ mol-1 (2) and 1040.6 kJ mol-1 (9). All the salts show good thermal stabilities with the decomposition temperatures ranging from 203 °C (4) to 284 °C (6). The impact sensitivities of the energetic salts lie between 5 J (2 and 5) and >40 J (6, 7, 8) and their friction sensitivities range from 108 N (4) to >360 N (6). Their detonation performances were calculated according to Kamlet-Jacobs equations. The detonation pressures of the synthesized energetic salts were found to be in the range of 21.1 GPa (6) to 34.7 GPa (5) and their detonation velocities are between 7117 m s-1 (6) and 8826 m s-1 (5).
Carbonyl and oxalyl bridged bis(l,5-diaminotetrazole)-based energetic salts
Joo, Young-Hyuk,Twamley, Brendan,Shreeve, JeaN'Ne M.
experimental part, p. 9097 - 9104 (2010/04/25)
High density energetic salts containing nitrogen rich cations and carbonyl- or oxalylbis(diamino-tetrazole) anions, which were obtained from cyanogen azide and hydrazine, were readily synthesized. In every case, a new family of energetic salts 3-14 were c
Reaction of Bis(trimethylsilyl) Sulfate with Hexamethyldisalazane, Acetamide, and Guanidine Hydrochloride
Belousova,Vlasova,Voronkov
, p. 397 - 399 (2007/10/03)
Bis(trimethylsilyl) sulfate acts as a donor of trimethylsilyl group in the reaction with hexamethyldisilazane, which results in formation of tris(trimethylsilyl)amine. In the reaction with acetamide it acts as a donor of SO3. The latter inserts into the O-H bond of the imide form of acetamide; the final reaction products are acetonitrile and sulfuric acid. The reaction of bis(trimethylsilyl) sulfate with guanidine hydrochloride leads to trimethylchlorosilane and guanidine sulfate.
Guanidinium salts, processes for their manufacture as well as microbicidal preparations containing these compounds
-
, (2008/06/13)
Guanidinium salts having the formula STR1 wherein R1 and R2 are linear alkyl residues, X is an anion, and n is 1 or 2, which possess excellent microbicidal properties, particularly against organisms which have become resistant against other active materials. Methods for preparation of the compounds and solutions containing same are disclosed.
