Crystal structure of melaminium cyanoacetate monohydrate

Abstract

The asymmetric unit of the title compound, 2,4,6-triamino-1,3,5-triazin-1-ium cyanoacetate monohydrate, C3H7N6 +·NCCH2COO−·H2O, consists of a melaminium cation, a cyanoacetate anion and a water molecule, which are connected to each other via N—H...O and O—H...O hydrogen bonds, generating an eight-membered ring. In the crystal, the melaminium cations are connected by two pairs of N—H...N hydrogen bonds, forming tapes along [110]. These tapes develop a three-dimensional network through N—H...O, O—H...O, N—H...N and C—H...O hydrogen bonds between the cations, anions and water molecules.

Acid-Doped Biopolymer Nanocoatings for Flame-Retardant Polyurethane Foam

“…The intumescent effect ultimately generates a thermal barrier that protects the underlying substrate from further decomposition. 7 Previous studies have shown the effectiveness of specific acid source additives in intumescent flame-retardant systems including boric acid, 22,23 cyanoacetic acid, 24 phosphoric acid, 25 and sulfuric acid. 25,26 This work compares the FR performance of commonly used acid sources when added to a nonselfextinguishing base recipe consisting of chitosan (CH) and carboxymethyl cellulose (CMC).…”

“…Previous studies have shown the effectiveness of specific acid source additives in intumescent flame-retardant systems including boric acid, , cyanoacetic acid, phosphoric acid, and sulfuric acid. , This work compares the FR performance of commonly used acid sources when added to a nonself-extinguishing base recipe consisting of chitosan (CH) and carboxymethyl cellulose (CMC). CH ,, and CMC , have been shown to be effective bio-sourced components in fire-retardant films.…”