Interception of Elusive Cationic Hf–Al and Hf–Zn Heterobimetallic Adducts with Mixed Alkyl Bridges Featuring Multiple Agostic Interactions

Invited for the cover of this issue is the group of Cristiano Zuccaccia at the Università degli Studi di Perugia. The image depicts a relation of the nuances of chemical bonding to the diverse ways that animals “bind” to their natural surroundings. Read the full text of the article at 10.1002/chem.201905699. “Over the years, our efforts have advanced toward increasingly complex molecular systems, as exemplified by this study of the details of catalyst–activator–cocatalyst interactions.” Read more about the story behind the cover in the Cover Profile and about the research itself on page 3758 ff. (DOI: 10.1002/chem.201905699).