A mixed-ligand ternary complex of nickel(II): synthesis, characterization and catalytic investigation for the synthesis of pyranopyrazoles. - Ebrahimipour, S.; Ranjabr, Zohre; Kermani, Esmat; Amiri, Behjat; Rudbari, Hadi; Saccá, Alessandro; Hoseinzade, Fatemeh (Transition Metal Chemistry, 2015)