Sr2CuO2Cl2. signifies a virtually ideal scenario of a 2-D antiferromagnetic CuO2-plane and therefore is of unique interest during the context from the origins of substantial TC superconductivity. We use The only-internet site impurity Anderson model with 5 Cu 3d orbitals and O 2p valence bands specified via the irreducible representations https://okada4dsg.com/