Reactivity of Copper(I) Complexes with Tripodal Ligands towards O2: Structures of a Precursor [L3CuI(NCCH3)](BF4), L3 = Tris(3‐isopropyl‐4,5‐trimethylenepyrazolyl)methane and of its Oxidation Product [L3CuII(μ‐OH)2CuIIL3](BF4)2 with Strong Antiferromagnetic Spin‐Spin Coupling | Publicación