Preparation, crystal structures, thermal decomposition and explosive properties of two novel energetic compounds M(IMI)4(N 3)2 (M = CuII and NiII, IMI = imidazole): The new high-nitrogen materials (N > 46%)

Bi Dong Wu; Shi Wei Wang; Li Yang; Tong Lai Zhang; Jian Guo Zhang; Zun Ning Zhou; Kai Bei Yu

doi:10.1002/ejic.201100054

Preparation, crystal structures, thermal decomposition and explosive properties of two novel energetic compounds M(IMI)₄(N ₃)₂ (M = Cu^II and Ni^II, IMI = imidazole): The new high-nitrogen materials (N > 46%)

Bi Dong Wu, Shi Wei Wang, Li Yang^*, Tong Lai Zhang, Jian Guo Zhang, Zun Ning Zhou, Kai Bei Yu

^*Corresponding author for this work

School of Mechatronical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

Two novel multiligand coordination complexes of imidazole-copper(II) azide and imidazole-nickel(II) azide, Cu(IMI)₄(N₃)₂ and Ni(IMI)₄(N₃)₂, were synthesized and characterized by elemental analysis and FTIR spectroscopy. The crystal structures were determined by single-crystal X-ray diffraction. The results show that the crystals of Cu(IMI)₄(N₃)₂ and Ni(IMI)₄(N₃)₂ crystallize in the orthorhombic Pna2₁ and monoclinic P2₁/n space groups, respectively. The metal cations are six-coordinate, and are bound to two azido ligands by μ₁-azido bridges and to four imidazole molecules through nitrogen atoms. Under nitrogen, with a heating rate of 5 Kmin^-1,these compounds go through two main exothermic stagesbetween 420 K and 750 K during their thermal decompostion, as seen in the differential scanning calorimetry (DSC) and thermogravimetry-differential thermogravimetry (TG-DTG) curves. The nonisothermal kinetic parameters were calculated by the Kissinger and Ozawa methods. The sensitivity properties of M(IMI)₄(N₃) ₂ were also determined by standard methods, and the results showed that Cu(IMI)₄(N₃)₂ had high impact and friction sensitivities and low flame sensitivity. Ni(IMI)₄(N ₃)₂ had low sensitivity to external stimuli, but it had a very high energy of combustion. The results of all the studies showed that these M(IMI)₄(N₃)₂ (M = Cu^II and Ni ^II) compounds have potential application as energetic materials. Cu(IMI)₄(N₃)₂ (IMI = imidazole) crystallizes in the orthorhombic space group Pna2₁. The metal cations are six-coordinate, and are linked to two azido ligands by μ₁-azido bridges and to four imidazole molecules through nitrogen atoms. In addition, this compound has high impact and friction sensitivity and therefore has potential application as an energetic material.

Original language	English
Pages (from-to)	2616-2623
Number of pages	8
Journal	European Journal of Inorganic Chemistry
Issue number	16
DOIs	https://doi.org/10.1002/ejic.201100054
Publication status	Published - Jun 2011

Keywords

Azides
Copper
Decomposition
Imidazole
Nickel
Sensitivity

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Wu, B. D., Wang, S. W., Yang, L., Zhang, T. L., Zhang, J. G., Zhou, Z. N., & Yu, K. B. (2011). Preparation, crystal structures, thermal decomposition and explosive properties of two novel energetic compounds M(IMI)₄(N ₃)₂ (M = Cu^II and Ni^II, IMI = imidazole): The new high-nitrogen materials (N > 46%). European Journal of Inorganic Chemistry, (16), 2616-2623. https://doi.org/10.1002/ejic.201100054

@article{3a604c3310ff4b50bb3f8a03aecfc7b8,

title = "Preparation, crystal structures, thermal decomposition and explosive properties of two novel energetic compounds M(IMI)4(N 3)2 (M = CuII and NiII, IMI = imidazole): The new high-nitrogen materials (N > 46%)",

abstract = "Two novel multiligand coordination complexes of imidazole-copper(II) azide and imidazole-nickel(II) azide, Cu(IMI)4(N3)2 and Ni(IMI)4(N3)2, were synthesized and characterized by elemental analysis and FTIR spectroscopy. The crystal structures were determined by single-crystal X-ray diffraction. The results show that the crystals of Cu(IMI)4(N3)2 and Ni(IMI)4(N3)2 crystallize in the orthorhombic Pna21 and monoclinic P21/n space groups, respectively. The metal cations are six-coordinate, and are bound to two azido ligands by μ1-azido bridges and to four imidazole molecules through nitrogen atoms. Under nitrogen, with a heating rate of 5 Kmin-1,these compounds go through two main exothermic stagesbetween 420 K and 750 K during their thermal decompostion, as seen in the differential scanning calorimetry (DSC) and thermogravimetry-differential thermogravimetry (TG-DTG) curves. The nonisothermal kinetic parameters were calculated by the Kissinger and Ozawa methods. The sensitivity properties of M(IMI)4(N3) 2 were also determined by standard methods, and the results showed that Cu(IMI)4(N3)2 had high impact and friction sensitivities and low flame sensitivity. Ni(IMI)4(N 3)2 had low sensitivity to external stimuli, but it had a very high energy of combustion. The results of all the studies showed that these M(IMI)4(N3)2 (M = CuII and Ni II) compounds have potential application as energetic materials. Cu(IMI)4(N3)2 (IMI = imidazole) crystallizes in the orthorhombic space group Pna21. The metal cations are six-coordinate, and are linked to two azido ligands by μ1-azido bridges and to four imidazole molecules through nitrogen atoms. In addition, this compound has high impact and friction sensitivity and therefore has potential application as an energetic material.",

keywords = "Azides, Copper, Decomposition, Imidazole, Nickel, Sensitivity",

author = "Wu, {Bi Dong} and Wang, {Shi Wei} and Li Yang and Zhang, {Tong Lai} and Zhang, {Jian Guo} and Zhou, {Zun Ning} and Yu, {Kai Bei}",

year = "2011",

month = jun,

doi = "10.1002/ejic.201100054",

language = "English",

pages = "2616--2623",

journal = "European Journal of Inorganic Chemistry",

issn = "1434-1948",

publisher = "Wiley-VCH Verlag",

number = "16",

}

Wu, BD, Wang, SW, Yang, L, Zhang, TL, Zhang, JG , Zhou, ZN & Yu, KB 2011, 'Preparation, crystal structures, thermal decomposition and explosive properties of two novel energetic compounds M(IMI)₄(N ₃)₂ (M = Cu^II and Ni^II, IMI = imidazole): The new high-nitrogen materials (N > 46%)', European Journal of Inorganic Chemistry, no. 16, pp. 2616-2623. https://doi.org/10.1002/ejic.201100054

Preparation, crystal structures, thermal decomposition and explosive properties of two novel energetic compounds M(IMI)₄(N ₃)₂ (M = Cu^II and Ni^II, IMI = imidazole): The new high-nitrogen materials (N > 46%). / Wu, Bi Dong; Wang, Shi Wei; Yang, Li et al.
In: European Journal of Inorganic Chemistry, No. 16, 06.2011, p. 2616-2623.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Preparation, crystal structures, thermal decomposition and explosive properties of two novel energetic compounds M(IMI)4(N 3)2 (M = CuII and NiII, IMI = imidazole)

T2 - The new high-nitrogen materials (N > 46%)

AU - Wu, Bi Dong

AU - Wang, Shi Wei

AU - Yang, Li

AU - Zhang, Tong Lai

AU - Zhang, Jian Guo

AU - Zhou, Zun Ning

AU - Yu, Kai Bei

PY - 2011/6

Y1 - 2011/6

N2 - Two novel multiligand coordination complexes of imidazole-copper(II) azide and imidazole-nickel(II) azide, Cu(IMI)4(N3)2 and Ni(IMI)4(N3)2, were synthesized and characterized by elemental analysis and FTIR spectroscopy. The crystal structures were determined by single-crystal X-ray diffraction. The results show that the crystals of Cu(IMI)4(N3)2 and Ni(IMI)4(N3)2 crystallize in the orthorhombic Pna21 and monoclinic P21/n space groups, respectively. The metal cations are six-coordinate, and are bound to two azido ligands by μ1-azido bridges and to four imidazole molecules through nitrogen atoms. Under nitrogen, with a heating rate of 5 Kmin-1,these compounds go through two main exothermic stagesbetween 420 K and 750 K during their thermal decompostion, as seen in the differential scanning calorimetry (DSC) and thermogravimetry-differential thermogravimetry (TG-DTG) curves. The nonisothermal kinetic parameters were calculated by the Kissinger and Ozawa methods. The sensitivity properties of M(IMI)4(N3) 2 were also determined by standard methods, and the results showed that Cu(IMI)4(N3)2 had high impact and friction sensitivities and low flame sensitivity. Ni(IMI)4(N 3)2 had low sensitivity to external stimuli, but it had a very high energy of combustion. The results of all the studies showed that these M(IMI)4(N3)2 (M = CuII and Ni II) compounds have potential application as energetic materials. Cu(IMI)4(N3)2 (IMI = imidazole) crystallizes in the orthorhombic space group Pna21. The metal cations are six-coordinate, and are linked to two azido ligands by μ1-azido bridges and to four imidazole molecules through nitrogen atoms. In addition, this compound has high impact and friction sensitivity and therefore has potential application as an energetic material.

AB - Two novel multiligand coordination complexes of imidazole-copper(II) azide and imidazole-nickel(II) azide, Cu(IMI)4(N3)2 and Ni(IMI)4(N3)2, were synthesized and characterized by elemental analysis and FTIR spectroscopy. The crystal structures were determined by single-crystal X-ray diffraction. The results show that the crystals of Cu(IMI)4(N3)2 and Ni(IMI)4(N3)2 crystallize in the orthorhombic Pna21 and monoclinic P21/n space groups, respectively. The metal cations are six-coordinate, and are bound to two azido ligands by μ1-azido bridges and to four imidazole molecules through nitrogen atoms. Under nitrogen, with a heating rate of 5 Kmin-1,these compounds go through two main exothermic stagesbetween 420 K and 750 K during their thermal decompostion, as seen in the differential scanning calorimetry (DSC) and thermogravimetry-differential thermogravimetry (TG-DTG) curves. The nonisothermal kinetic parameters were calculated by the Kissinger and Ozawa methods. The sensitivity properties of M(IMI)4(N3) 2 were also determined by standard methods, and the results showed that Cu(IMI)4(N3)2 had high impact and friction sensitivities and low flame sensitivity. Ni(IMI)4(N 3)2 had low sensitivity to external stimuli, but it had a very high energy of combustion. The results of all the studies showed that these M(IMI)4(N3)2 (M = CuII and Ni II) compounds have potential application as energetic materials. Cu(IMI)4(N3)2 (IMI = imidazole) crystallizes in the orthorhombic space group Pna21. The metal cations are six-coordinate, and are linked to two azido ligands by μ1-azido bridges and to four imidazole molecules through nitrogen atoms. In addition, this compound has high impact and friction sensitivity and therefore has potential application as an energetic material.

KW - Azides

KW - Copper

KW - Decomposition

KW - Imidazole

KW - Nickel

KW - Sensitivity

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U2 - 10.1002/ejic.201100054

DO - 10.1002/ejic.201100054

M3 - Article

AN - SCOPUS:79956318441

SN - 1434-1948

SP - 2616

EP - 2623

JO - European Journal of Inorganic Chemistry

JF - European Journal of Inorganic Chemistry

IS - 16

ER -