Consistent zincophosphite 4-ring 'ladder' chain structural motif with isomeric ligands

• Published in: Acta crystallographica. Section E, Crystallographic communications Vol. 79; no. Pt 4; pp. 272 - 279
• Main Authors: Wark, Stephen, Lyons, Megan J, Slawin, Alexandra M Z, Harrison, William T A
• Format: Journal Article
• Language: English
• Published: England International Union of Crystallography 01.04.2023
• Subjects: crystal structure; isomers; Research Communications; zincophosphite; isomers; crystal structure; zincophosphite
• ISSN: 2056-9890; 2056-9890
• DOI: 10.1107/S2056989023002062

The syntheses and crystal structures of four hydro-thermally prepared organo-zinc phosphites, . poly[[(2-amino-3-methyl-pyridine)-μ -phospho-nato-zinc] hemihydrate], {[Zn(HPO )(C H N )]·0.5H O} , (I), poly[(2-amino-4-methyl-pyridine)-μ -phospho-nato-zinc], [Zn(HPO )(C H N )] , (II), poly[(2-amino-5-methyl-pyridine)-μ -phospho-nato-zinc], [Zn(HPO )(C H N )] , (III), and poly[bis-(2-amino-4-methyl-pyridinium) [tetra-μ -phospho-nato-trizinc] monohydrate], {(C H N ) [Zn (HPO ) ]·H O} , (IV), are described. Compounds (I)-(III) are constructed from vertex-sharing ZnO N tetra-hedra (the organic mol-ecule acting as a ligand) and HPO pseudo pyramids in a 1:1 ratio to generate the same of infinite 4-ring 'ladder' chains propagating in the [010], [101] and [100] directions, respectively, whereas (IV) consists of (010) layers of vertex-sharing ZnO and HPO units in a 3:4 ratio with the protonated organic mol-ecule acting as a template. When an excess of HCl is used in the synthesis, the simple hydrated mol-ecular salt, bis-(2-amino-3-methyl-pyridinium) tetra-chloro-zincate monohydrate, (C H N ) [ZnCl ]·H O, (V), arises. Com-pounds (I)-(V) feature extensive networks of hydrogen bonds, both classical (N-H⋯O, N-H⋯Cl, O-H⋯O) and non-classical (C-H⋯O, C-H⋯Cl) in nature, which help to consolidate the extended structures.