Abstract
Chemical preparation, X-ray single crystal, thermal analysis and IR spectroscopic investigation of (C7H10 N)2·SO4 denoted NMAS are described. The NMAS crystallizes in the triclinic system with P-1 space group. Its unit cell dimensions are a = 9.6150(5) A, b = 9.9744(3) A, c = 10.2767(6) A, = 68.069(3), = 62.929(2), = 67.285(3) with V = 785.72(7) A 3 and Z = 2. The structure has been solved using direct me- thod and refined to a reliability R factor of 3.62%. The NMAS structure is built up from chains con- taining all the components of the structure and par- allel to the b axis, linked via N—HO hydrogen bonds. Stability between successive chains is perfor- med by weak interactions originating from the orga- nic cations.
Highlights
Studies of charged species have become an active research area in organic chemistry and biology [1,2,3]
The most striking result is the high number of hydrogen bonds to the sulfate, which results in the sulfate being surrounded by a cloud of hydrogen donors [5]
Besides structural considerations resulting from crystallographic studies, some organic sulfates exhibit non-linear optical properties [6], or phase transitions [7,8]
Summary
Studies of charged species (cations and anions) have become an active research area in organic chemistry and biology [1,2,3]. Their role as structural agents is important in molecular association processes and in mediating the tertiary structures of proteins and nucleic acids [4]. The family of compounds which combine the cohesion of sulfate anions with enhanced polarizability of organic molecules was clearly illustrated. The title compound (NMAS) is an additional example for illustrating the templating effect of aromatic ammonium molecules on sulfate. We report here the chemical preparation, crystallographic features, thermal behavior, and IR analysis of a new organic sulfate, (C7H10N)2·SO4
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