Structure of 2,4,6-tris(N,N-dimethylamino)-1,3,5-oxadiazinium chloride dihydrate, C9H18N5O+.Cl−.2H2O

Abstract

Abstract. M r= 283.75, monoclinic, P2Jc, a = 7.608(4), b=16.099(7), c=12.127 (8) The cyclic system shows extensive delocalization to include the exocyclic nitrogen centres, thus maintaining the N-methyl substituents nearly coplanar with the ring.

Bis(2,4-dimorpholino-6-phenyl-1,3,5-oxadiazinium) hexachlorodicuprate

“…In (1) bond distances in the cationic 1,3,5-oxadiazinium ring agree well with those previously reported (Rushton, Schwalbe & Stevens, 1983;A1-Talib, Jochims, Zsolnai & Huttner, 1985;Hartung, Beyer, Guti6rrez-Puebla, Fernandez & Olk, 1992). The oxadiazinium ring is planar [maximum deviation -0.045 A for C(4)], as is the phenyl ring, and the angle between these rings is 2.6 °.…”

Triazines and related products. Part 30. Cationic analogues of the antitumour drug 2,4,6-tris(dimethylamino)-1,3,5-triazine (hexamethylmelamine)

“…spectra of the mixtures. Attempts to prepare the product (21; R = cyclohexyl) [or isomer (22; R = cyclohexyl)] in practicable yields by treating its presumed precursor, the adduct (15; R = cyclohexyl), with an excess of cyclohexylamine was not successful; only mixtures were formed and we are unable to pinpoint the timing of the dimethylamine displacement steps in the overall reaction (10)…”

“…It is interesting to compare the spectral properties of the oxadiazinium salt (10) with those of HMM. The salt had h,,,, 247 nm (cf: 228 nm for HMM)."…”

“…for recrystallised products: see Table2for physical data. Contaminated with a trace of(10). Methylamine (33% w/v) in ethanol used.…”