Assembling Quasi‐enantiomeric Octahedral Complexes of Different Metals via Quasi‐racemate Crystallization |
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| Authors: | Yanay Popowski Prof Israel Goldberg Prof Moshe Kol |
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| Institution: | School of Chemistry, Tel Aviv University, Israel |
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| Abstract: | Aiming at a general methodology for binary co‐assembly of complexes of different metals through quasiracemate crystallization, the hexadentate ligand 1 comprised of the chiral bipyrrolidine core and two bipyridine peripheral arms is introduced. Ligand 1 was found to bind in a fully diastereoselective and uniform mode around ZnII, FeII and CdII giving coordinatively inert octahedral “chiral‐at‐metal” complexes with the Δ4Λ2/Λ4Δ2 wrapping mode. Equimolar mixtures of quasienantiomeric pairs of these complexes exhibited a clear tendency to pack as quasiracemates as was revealed from the crystallographic structures of (R,R)‐ 1 ‐Zn](PF6)2/(S,S)‐ 1 ‐Fe](PF6)2 and (R,R)‐ 1 ‐Zn](PF6)2/(S,S)‐ 1 ‐Cd](PF6)2, in an isomorphous fashion to that of the racemic compound rac‐ 1 ‐Zn](PF6)2 in space group C2/c. |
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| Keywords: | binary materials bipyrrolidine chiral ligands hexadentate ligands quasiracemate |
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