Sr2CuO2Cl2. Signifies a virtually perfect situation of the two-D antiferromagnetic CuO2-airplane and so is of particular fascination during the context of the origins of higher TC superconductivity. We use The one-web page impurity Anderson product with 5 Cu 3d orbitals and O 2p valence bands specified with the irreducible representations https://okada4dsg.com/