Sr2CuO2Cl2. Signifies a virtually ideal case of the two-D antiferromagnetic CuO2-aircraft and therefore is of unique desire within the context of the origins of high TC superconductivity. We now have measured experimentally and analyzed theoretically the Ti 2p X-ray photoemission spectra (XPS) as well as the resonant improvement of valence https://okada4dsg.com/