1. Synthesis, structural characterization, and thermal properties of alkaline (earth) compounds derived from 2,4-dinitroimidazole
- Author
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Guofang Zhang, Peng Chen, Ping Li, Fengqi Zhao, Da-Min Dai, Ji-Zhen Li, Mei-Yu Cai, Xue-Zhong Fan, Jianhua Yi, Ke Yan, An-Shan Ma, Rui Wang, and Yong Wang
- Subjects
Alkaline earth metal ,Chemistry ,Hydrogen bond ,Coordination number ,Inorganic chemistry ,Kinetics ,Crystal structure ,Metal ,Crystallography ,Elemental analysis ,visual_art ,Materials Chemistry ,visual_art.visual_art_medium ,Physical and Theoretical Chemistry ,Chemical decomposition - Abstract
Eight alkaline and alkaline-earth compounds derived from 2,4-dinitroimidazole (2,4-HDNI) were synthesized and characterized by elemental analysis, FT-IR, and TG–DSC, of which K(2,4-DNI) (1), Rb(2,4-DNI)(2,4-HDNI)(H2O)2 (2), and Ba(2,4-DNI)2(H2O)4 (3) were characterized by single-crystal X-ray diffraction analysis. All the three compounds were crystallized from water, but 1 was an anhydrate. The coordination number in 1 and 3 is 10, but in 2 is 9. The 2,4-DNI adopts either η3, η2, or η1 coordination modes depending on the metal cation. In 3, there is an inversion center located on the metal. Only in 2 does water play an important role for the construction of the structure; in 3 it is a hydrogen bonding participant. TG–DSC analyses of 1 were also performed, and non-isothermal decomposition reaction kinetics were obtained.
- Published
- 2010