2021
DOI: 10.1002/ejic.202000996
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Stereoisomeric Control in [RuCl2(PTA)2(2L)] Complexes (2L=2py or bpy): From Theoretical Calculations to a 2+2 Metallacycle of Pyridylporphyrins

Abstract: Treatment of the Ru(II) precursor cis,cis,trans-[RuCl 2 (dmso-S) 2 (PTA) 2 ] (1, PTA = 1,3,5-triaza-7-phosphaadamantane) with 2,2'-bipyridine (bpy) in refluxing ethanol selectively affords cis,cis-[Ru(bpy)Cl 2 (PTA) 2 ] (2), whereas with pyridine (py), under the same conditions, it gives trans,cis,cis-[RuCl 2 (PTA) 2 (py) 2 ] (6). The slightly less stable stereoisomer of 2, cis,trans-[Ru(bpy) Cl 2 (PTA) 2 ] (3), is obtained selectively through a different synthetic route. Isomers 2 and 3 are thermally stable, … Show more

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