“…Other known [(Tp R,R 0 )CuX] 0,1+ compounds utilized secondor third-generation ligands, i.e. Tp i-Pr 2 , Tp t-Bu,i-Pr , Tp Ph,Me , Tp t-Bu,Me , Tp Ph,i-Pr , Tp t-Bu,H , Tp Ph,H , Tp Cy,H (Cy is cyclohexyl), and Tp 6-Mepy , where X = Cl À (Kitajima et al, 1990), H 2 O (Humphrey et al, 1999), NO 3 À (Fujisawa et al, 2000(Fujisawa et al, , 2001), OH À (Fujisawa et al, 2000), CH 3 COO À (Chia et al, 2000), and NO 2 À (Lehnert et al, 2007), while several structurally characterized (Tp Me 2 )CuL motifs were reported for Cu I centers (Blake et al, 2002;Kimani et al, 2010;Lim & Holm, 1998;Lobbia et al, 1997Lobbia et al, , 2004Pellei et al, 2000;Thompson et al, 1983). Coordinated 3,5-dimethylpyrazole resulted in the formation of a (Tp Me 2 )CuXY-type complex, i.e.…”