2-Phenylbiguanidinium hydrogen succinate methanol monosolvate

Abstract

In the crystal of the title compound, C8H12N5 +·C4H5O4 −·CH3OH, the hydrogen succinate anions form infinite [010] chains via short, almost symmetrical, O⋯H⋯O hydrogen bonds. The 2-phenyl­biguanidium cations inter­connect these chains into layers lying parallel to the bc plane by way of N—H⋯O links. These planes only weakly inter­act in the direction of the a axis via C—H⋯π contacts between offset phenyl rings, leaving as much as 17% of the unit-cell volume accessible for the solvent. However, the methanol solvent mol­ecules could not be resolved due to extensive disorder and their assumed presence was removed from the overall scattering by the PLATON SQUEEZE procedure.

Inorganic Salts of N-phenylbiguanidium(1+)—Novel Family with Promising Representatives for Nonlinear Optics

“…The conformation of N-phenylbiguanidium(1+) cations in the crystal structures is further stabilised by one (in phbigua 2 SO 4 and in phbigua 2 HPO 3 -one of the cations) or two N-H...N intramolecular hydrogen bonds (see Tables S3-S9, Supplementary Materials) described by graph set descriptor S (6). A very similar situation was also observed in the previously studied biguanide salts [24,29,32,33].…”

“…The values of interplanar angles in the biguanide part of the cations range from 36 to 50 • . To compare the values determined in previously studied biguanide and Nphenylbiguanide salts, see references [24,29,30,32,33]. The values of the interplanar angles of the phenyl ring plane and neighbouring "guanidine" plane range from 15 to 71 • .…”

“…The aim of this paper is to extend the small family of N-phenylbiguanidium(1+) crystalline salts [27,28,[32][33][34] by preparing novel members containing inorganic anions (as co-crystallisation partners) with diverse symmetries and hydrogen bonding potential for activating different self-assembly modes in crystal packing, thereby obtaining new, prospective molecular materials for NLO. For this purpose, seven novel compounds, N-phenylbiguanidium(1+) nitrate (phbiguaNO 3 ), N-phenylbiguanidium(1+) perchlorate (phbiguaClO 4 ), N-phenylbiguanidium(1+) hydrogen carbonate (phbiguaHCO 3 ), bis(Nphenylbiguanidium(1+)) sulfate (phbigua 2 SO 4 ), bis(N-phenylbiguanidium(1+)) hydrogen phosphate sesquihydrate (phbigua 2 HPO 4 1.5H 2 O), bis(N-phenylbiguanidium(1+)) phosphite (phbigua 2 HPO 3 ), and bis(N-phenylbiguanidium(1+)) phosphite dihydrate (phbigua 2 HPO 3 2H 2 O) were prepared and characterised both structurally and spectroscopically.…”

Synthesis of Metforminium Succinate by Melting. Crystal Structure, Thermal, Spectroscopic and Dissolution Properties

“…However, motif II exhibits a deviation of 25.93º between the plane O2-C1-O1 (carboxylate) and the plane H1B-N1-C3-N3-H3B. A comparison of this value with similar structures deposited at CSD (6.5º aminoguanidinium hydrogensuccinate-GOLXUB [22], 12.45º biguanidium hydrogen succinate-PUNPUK [23], 9.27º guanidinium hydrogen succinate-SEWXAU [24], 6.46º 2-phenylbiguanidinium hydrogen succinate methanol solvate-WADTEC [25]) reveal a significant deviation of motif II in 2. This probably being due to the juxtaposition of motif II with motif III in the crystal lattice (Fig.…”