Crystal structure of bis(2,3,5-trimethylpyridine N-oxide) 2,4,6-trinitrophenolate: Cation complex tied by the extremely strong OHO hydrogen bonding

摘要

The salt of bis(2,3,5-trimethylpyridine N-oxide) 2,4,6-trinitrophenolate, C22H25N5O9, crystallizes in monoclinic space group C2/c with a=12.411( 2)Angstrom, b=15.326(3)Angstrom, c=13.559(3)Angstrom, beta=113.13(1)degrees, V=2371.8(8) Angstrom(3), Z=4, D-c=1.410 mg/m(3), F(000)=1056. The molecule of 2,3,5-trimethylpyridine N-oxide is protonated. Two pyridine N-oxide molecules are linked by extremely strong OHO hydrogen bonding (2.378(4) Angstrom) to form a cation complex. CHO hydrogen bonding and pi-pi interactions also play important role in stablizing the structure of the salt.