Complexation of 16-membered P4N2 macrocycles with Fe(II) ion as tool for stabilization of their RPSPSPRP stereoisomers. (1st October 2022)

• Record Type: Journal Article
• Authors: Musina, Elvira I.; Strelnik, Igor D.; Shpagina, Alena S.; Balueva, Anna S.; Wittmann, Tatiana I.; Fayzullin, Robert R.; Karasik, Andrey A.
• Is Part Of: Polyhedron. Volume 225(2022)
• Publication Date: 2022-10-01
• Subjects: P4N2-macrocycles -- Fe(II) complexes -- Stereoisomers -- Phosphines -- Dynamic Covalent chemistry; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2022.116053
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: The only R P S P S P R P -isomer of Fe(II) complex with P4 N2 ligand is formed by complexation of any stereoisomer of 16-membered aminomethylphosphine with Fe(BF4 )2. Abstract: The novel mononuclear Fe(II) complexes of 16-membered P4 N2 ligands were synthesized, where octahedral Fe(II) ion is coordinated by four phosphorus atoms of the ligand in equatorial positions and nitrogen atoms of two acetonitrile co-ligands in apical positions. The tetraphosphine ligands demonstrate the RP SP SP RP -configuration regardless of the configuration of the starting stereoisomer of the macrocycles, so that the complexation with iron(II) salts drives up the fixation of this configuration of 1, 9-di(R)-1, 9-diaza-3, 7, 11, 15-tetraphenyl-3, 7, 11, 15-tetraphosphacyclohexadecanes, which in turn is favorable for the binding of octahedral metal cations.