Dinuclear [M2L2]n+ (M = Pd2+ or Pt2+) metallo-rectangles have a rich history, particularly in molecular recognition, including self-catenation events. These structures are mostly generated via a ligand-directed approach with cis-capped M2+ corners. We report here a symmetry interaction approach using 3 : 1 complementary denticity, giving a new route to [M2L2]4+ rectangles and their self-catenation.
![Graphical abstract: A symmetry interaction approach to [M2L2]4+ metallocycles and their self-catenation](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=C9CC07130J&imageInfo.ImageIdentifier.Year=2019)
D. Preston, A. R. Inglis, A. L. Garden and P. E. Kruger, Chem. Commun., 2019, 55, 13271 DOI: 10.1039/C9CC07130J
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