In order to study the relationship between the structures and sensitivities of energetic coordination compounds,the enthalpies of solution of ［Mn(CHZ)₃］(NO₃)₂ and ［Mn(CHZ)₃］(ClO₄)₂ in deionized water were measured by a Setaram C80Ⅱ microcalorimeter at 298.15 K. The standard molar enthalpies of solution were obtained to be 91.13 kJ·mol^-1 for ［Mn(CHZ)₃］(NO₃)₂ and 87.09 kJ·mol^-1 for ［Mn(CHZ)3］(ClO4)2. Their lattice energy were calculated farther as ［Mn(CHZ)₃］(NO₃)₂ being 1737.36 kJ·mol^-1 and ［Mn(CHZ)₃］(ClO₄)₂ being 1485.36 kJ·mol^-1 through Kapustinskii formula,and the thermochemistry radius of ［Mn(CHZ)₃］ ²⁺ was obtained to be 2.12Å. The relationship between lattice energy and impact sensitivity or friction sensitivity was discussed. The more the lattice energy is,the lower the sensitivity is. ［Mn(CHZ)₃］(NO₃)₂ is more insensitive than ［Mn(CHZ)₃］(ClO₄)₂.