Synthesis, spectroscopic and thermal characterization of non-metal cation nmc pentaborates salts containing 2-amino-5-nitropyridine and 2-amino-6-methylpyridine as cation

Authors : Umit SİZİR, Dursun Ali KOSE, Omer YURDAKUL

Pages : 91-96

Doi:10.17350/HJSE19030000014

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Publication Date : 2015-07-01

Article Type : Research Paper

Abstract :The pyridine derivatives, 2-amino-5-nitropyridine and 2-amino-6-methylpyridine 6-aminopicolin , were used for the synthesis of two new non-metal cation NMCs pentaborate structures. The NMCs pentaborate molecules were characterized using 11B-NMR, elemental analysis, BET, FT-IR, P-XRD and melting point technics. The thermal properties had been investigated by TGA/DTA/DTG methods. 2-amino-5nitropyridine and 2-amino-6-methyl pyridine NMC s pentaborates showed different thermal stabilities among each other, but degradation of the dehydration of the following organic both NMC pentaborate structure as part away and decomposition products of B2O3 occurs by having glassy structure. The trigonal BO3 and tetragonal BO- moities were determined in 11B NMR spectrums. According to P-XRD methods each of the compound structures are in crystalline form. The peaks of pentaborate anion [B5O6 OH 4]- were seen in FT-IR spectra. Lastly, the hydrogen storage properties of these molecules were studied. The estimated molecular formulas of the complexes are as follows: 2-amino-5-nitropyridine pentaborate: [C5H5N3O2][B5O6 OH 4]3H2O2-amino-6-methylpyridine pentaborate: C6H8N][BO OH 4]2H2O
Keywords : Boron, Non metal Cation Borate Structure, Pentaborate, P XRD, Thermal Investigation, 11B NMR