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在T1系超导铜氧化合物中,除了合成晶体结构中含双层TlO层的Tl_2Ba_2CuO_6(Tl2201)、Tl_2Ba_2CaCu_2O_8(Tl2212)和Tl_2Ba_2Ca_2Cu_3O_(10)(Tl2223)等高T_c相以外,还合成了只含Tl-O单层的超导相,其分子式分别为Tl(Ba,Sr)_2CuO_5(Tl1201)、Tl(Ba,Sr)_2CaCu_2O_7(Tl1212)和Tl(Ba,Sr)_2Ca_2Cu_3O_9(Tl1223),常写成如下通式:Tl(Ba,Sr)_2Ca_(n-1)Cu_nO_(2n+3)(n=1,2和3等).n≥3的Tl系超导相中存在两种不等价的Cu晶位.一般把Cu-O五配位(配位多面体为金字塔形的正四方锥体)中的Cu晶位称为Cu(2)位,把Cu-O四配位(即中间的CuO_2层)中的Cu晶位称为Cu(1)位.
In addition to Tl2Ba_2CuO_6 (Tl2201), Tl_2Ba_2CaCu_2O_8 (Tl2212) and Tl_2Ba_2Ca_2Cu_3O_ (10) (Tl2223) with high Tc phase in the TlO superconducting CuO compound, O monolayer superconducting phase, the formula is Tl (Ba, Sr) _2CuO_5 (Tl1201), Tl (Ba, Sr) _2CaCu_2O_7 (Tl1212) and Tl (Ba, Sr) _2Ca2Cu_3O_9 (Tl1223), often written as follows In the Tl superconducting phase of Tl (Ba, Sr) _2Ca_ (n-1) Cu_nO_ (2n + 3) (n = 1, 2 and 3), two inequalities of Cu In general, the Cu site in the Cu-O five-coordinate (tetrahedral pyramid with a coordination polyhedron) is called Cu (2), and the Cu-O tetracoordinate The Cu site in Cu is called Cu (1).