Aryl CbH Activation by CuII To Form an Organometallic Aryl–CuIII Species: A Novel Twist on Copper Disproportionation This research was supported by MICYT of Spain through project PBQ2000-0548 and with the grant SGR-3102-UG-01 as well as the Distinction award from from CIRIT Generalitat de Catalunya (Spain). An FI doctoral grant from CIRIT to X.R. and financial support from the National Institutes of Health (USA; T.D.P.S. GM-50730; K.O.H. RR-01209) are also acknowledged. SSRL operations are funded by the Department of Energy, Basic Energy Sciences, and the SSRL Structural Molecular Biology Program is supported by the NIH NCRR BTP and the DOE OBER.