S1 Synthesis of Group IV (Zr,Hf)−Group VIII (Fe,Ru) Heterobimetallic Complexes Bearing Metallocenyl Diphosphine Moieties and their Application to Catalytic Dehydrogenation of Amine−Boranes Supporting Information Takamasa Miyazaki, Yoshiaki Tanabe, Masahiro Yuki, Yoshihiro Miyake, and Yoshiaki Nishibayashi* Institute of Engineering Innovation, School of Engineering, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo 113-8656, Japan Table of Contents Experimental section S2 X-ray diffraction studies S5 References and Notes S21