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Frontispiece: Macrocyclic Complexes Derived from Four cis ‐L 2 Pt Corners and Four Butadiynediyl Linkers; Syntheses, Electronic Structures, and Square versus Skew Rhombus Geometries
Author(s) -
Collins Brenna K.,
Clough Mastry Melissa,
Ehnbom Andreas,
Bhuvanesh Nattamai,
Hall Michael B.,
Gladysz John A.
Publication year - 2021
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202183963
Subject(s) - rhombus , planar , skew , crystallography , square (algebra) , maxima and minima , platinum , möbius strip , chemistry , physics , geometry , mathematics , computer science , mathematical analysis , biochemistry , computer graphics (images) , astronomy , catalysis
The term “molecular square” has been applied to many species, but are they truly planar as a mathematician would require? This work probes this conundrum for a series of Pt 4 C 16 complexes with platinum(II) corners and butadiynediyl or −C≡C−C≡C− edges. In fact, both planar and puckered energy minima are found, both by DFT calculations and crystallographically. Thus, mimicking the grace of a butterfly in flight, these structures can easily transit between extended and folded geometries. For more details see the Full Paper by J. A. Gladysz, M. B. Hall et al. on page 10021 ff.