The coordination number of dysprosium of complex anion [Dy(NTA)2]3- is eight. The counter-ions of [Dy(NTA)2]3- are three [IC17N2H20]+. Certain interaction exists between anion and cations.

• 配位阴离子组成为[Dy(NTA)_2)~(3-),镝的配位数为8;阳离子为三个[IC_(17)N_2H(20)]~+。阴、阳离子间除静电相互作用外,尚有一定键合作用。