TY - JOUR
T1 - Studies on three-dimensional coordination polymer [Cd2(N2H4)2(N3)4]n
T2 - Crystal structure, thermal decomposition mechanism and explosive properties
AU - Liu, Zhenhua
AU - Zhang, Tonglai
AU - Zhang, Jianguo
AU - Wang, Shaozong
PY - 2008/6/15
Y1 - 2008/6/15
N2 - A 3D coordination polymer of cadmium(II) hydrazine azide, [Cd2(N2H4)2(N3)4]n, was synthesized and characterized by elemental analysis and Fourier transform infrared (FT-IR) spectrum. Its crystal structure was determined by single crystal X-ray diffraction analysis. The crystal belongs to monoclinic, P21/c space group, a = 12.555(2) Å, b = 11.724(2) Å, c = 7.842(1) Å, β = 94.56(2)° and Z = 4. The crystal contains two crystallographically independent sets of distorted octahedral Cd(II) atoms and dimeric units of Cd2N2, Cd2(NNN)2, Cd2(NN)2 through double μ-1, 1 azide bridges, μ-1, 3 azide bridges and bidentate bridging hydrazine ligands, respectively, and thus generating a 3D network structure. The thermal decomposition mechanism of the complex was studied by using differential scanning calorimetry (DSC), thermogravimetry-derivative thermogravimetry (TG-DTG) and FT-IR techniques. Under nitrogen atmosphere with a heating rate of 10 °C/min, the thermal decomposition of the complex contained two intense exothermic decomposition processes in the range of 150-304 °C in the DSC curve, and the final decomposed residue at 500 °C was Cd. Sensitivity tests revealed that the title complex is very insensitive to external stimuli.
AB - A 3D coordination polymer of cadmium(II) hydrazine azide, [Cd2(N2H4)2(N3)4]n, was synthesized and characterized by elemental analysis and Fourier transform infrared (FT-IR) spectrum. Its crystal structure was determined by single crystal X-ray diffraction analysis. The crystal belongs to monoclinic, P21/c space group, a = 12.555(2) Å, b = 11.724(2) Å, c = 7.842(1) Å, β = 94.56(2)° and Z = 4. The crystal contains two crystallographically independent sets of distorted octahedral Cd(II) atoms and dimeric units of Cd2N2, Cd2(NNN)2, Cd2(NN)2 through double μ-1, 1 azide bridges, μ-1, 3 azide bridges and bidentate bridging hydrazine ligands, respectively, and thus generating a 3D network structure. The thermal decomposition mechanism of the complex was studied by using differential scanning calorimetry (DSC), thermogravimetry-derivative thermogravimetry (TG-DTG) and FT-IR techniques. Under nitrogen atmosphere with a heating rate of 10 °C/min, the thermal decomposition of the complex contained two intense exothermic decomposition processes in the range of 150-304 °C in the DSC curve, and the final decomposed residue at 500 °C was Cd. Sensitivity tests revealed that the title complex is very insensitive to external stimuli.
KW - Azide complex
KW - Cadmium(II)
KW - Crystal structure
KW - Hydrazine
KW - Thermal decomposition mechanism
UR - http://www.scopus.com/inward/record.url?scp=43049151477&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2007.10.099
DO - 10.1016/j.jhazmat.2007.10.099
M3 - Article
C2 - 18077090
AN - SCOPUS:43049151477
SN - 0304-3894
VL - 154
SP - 832
EP - 838
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
IS - 1-3
ER -