The explosive properties of inclusion compounds containing the monoanion of the energetic compound 3-nitro-1,2,4-triazol-5-one (NTO(-)) non-covalently bound to either of two larger, energetic, receptor complexes, namely 1-(2,4-dinitrophenyl)-1,4,7,10-tetraazacyclododecanezinc(II) or 1-(2,4-dinitrophenyl)-1,4,7,10-tetraazacyclododecanecopper(II), both as their monoperchlorate salts, are reported. The sensitivity of the receptor host guest complexes to electrostatic discharge or friction was not found to differ from that displayed by the separate components. However, for thermal sensitivity it was found that whereas NTO(-) desensitized the Zn(II) receptor complex it sensitized the Cu(II) receptor complex. For sensitivity to impact, measured using the Rotter impact test, it was found that NTO(-) sensitized the Zn(II) receptor complex, but desensitized the Cu(II) receptor complex.