Ruthenium–Cobalt Bimetallic Supramolecular Cages via a Less Symmetric Tetrapyridyl Metalloligand and the Effect of Spacer Units
journal contributionposted on 14.10.2015, 00:00 by Ji Yeon Ryu, Yu Jin Park, Hyoung-Ryun Park, Manik Lal Saha, Peter J. Stang, Junseong Lee
The self-assembly of Cs-symmetric tetrapyridyl cobalt–metalloligand 2 with three half-sandwich diruthenium acceptors, 3–5, led to the formation of A4D2 (A = acceptor, D = donor) metallacages 6–8, as shown by ESI mass spectrometry, NMR spectroscopy, and X-ray crystallography. The solid-state structures of 6–8 revealed that the length of the acceptor unit greatly influences the molecular packing of these metallacages. Hence, in the solid state, 6–8 can be considered to have waterwheel-shaped, tweezer-shaped, and butterfly-like architectures, respectively.