Preparation, Crystal Structure and Thermal Analyses of a Nitrogen‐rich Coordination Compound [Co(DAT)₆](PA)₂·4H₂O

Abstract

A new coordination compound [Co(DAT) 6 ](PA) 2 •4H 2 O has been prepared by using 1,5-diaminotetrazole (DAT) as ligands and picrate (PA) as acidic anions, and structurally characterized by X-ray single crystal diffraction, elemental analysis and FT-IR spectroscopy. The cobalt(II) cation coordinates with six N atoms from six bulky DAT molecules to form a six-coordinated and slightly distorted octahedral configuration. The coordination cation is situated between two PA anions whose benzene-ring planes are parallel to each other. The coordination cation and the PA anions are bonded together by electrostatic forces in the molecular unit of [Co(DAT) 6 ](PA) 2 •4H 2 O. All the molecular units are linked together by the intermolecular hydrogen bonds to form the crystal structure, in the formation of which DAT ligand plays an important role. Thermal decomposition processes of [Co(DAT) 6 ](PA) 2 •4H 2 O were investigated by using DSC, TG-DTG and FT-IR analyses. The kinetic parameters of the first exothermic process of the title compound were studied by applying the Kissinger's and Ozawa-Doyle's methods.

Synthesis, structural investigation and thermal properties of a novel manganese complex Mn2(DAT)2Cl4(H2O)4 (DAT=1,5-diaminotetrazole)

“…DAT is considered as a promising material for different types of combustible and thermally decomposed systems, as well as valuable intermediates in the synthesis of various useful tetrazolecontaining compounds. In recent years, DAT-based energetic salts have become hot issues [39][40][41][42], however, the complexes containing DAT as ligand have not been widely reported [43,44] until our recent works [45][46][47][48]. In recent years, we synthesized a series of coordination compounds using DAT as ligand, transition metal ions (such as cobalt (III), cadmium (II), manganese (II) and zinc (II)) as central metal cation.…”

Synthesis, structure, and thermal decomposition of two copper coordination compounds [Cu(DAT)2(PA)2] and [Cu(DAT)2(HTNR)2] with nitrogen rich 1,5-diaminotetrazole (DAT)

“…However, in most cases, complexes which are based on PA and TNR contain either coordination waters and/or lattice waters, such as [Co(DAT) 6 [27][28][29].…”

Preparation, Crystal Structure, and Thermal Decomposition of the Four‐coordinated Zinc Compound Based on 1,5‐Diaminotetrazole

“…[69] In addition, DAT, as a versatile type of ligand, is able to coordinate as monodentate ligand to bridge composition mechanism was determined based on differential scanning calorimeter (DSC) and thermogravimetry-derivative thermogravimetry (TG-DTG) analysis. Kinetic parameters of the first exothermic process were studied by using Kissinger [39] perchlorate, [37,40,70,71] nitrate, [41] picrate, [34,35] styphnate, [36,42] and azido [7] as counter anions. The crystal structure demonstrates that the metal(II) cation is coordinated by the DAT molecules to form a six-coordinated distorted octahedral structure.…”