The synthesis and chiral crystal structures of two enantiomers of a Ag helical coordination polymer based on argentophilicity

Achiral ligand- and Ag(I)-driven spontaneous resolution occurred simultaneously in the formation of two enantiomers 1P and 1M of [Ag2(5-nip)(mpyz)] (5-nip = 5-nitroisophthalic, mpyz = 2,3,5,6-tetramethylpyrazine), whose absolute sense of a helix made of achiral components is induced by the metal Ag(I) through argentophilic interactions.