Single- and Double-Stranded Chains Assembled via Concomitant Metal Coordination and Hydrogen Bonding

The synthesis and X-ray crystal structures of two novel cationic metal complexes bearing ligands capable of multiple hydrogen-bonding interactions (isonicotinamide) are reported. cis -(Et 3 P) 2 Pt(NC 5 H 4 CONH 2 ) 2 (NO 3 ) 2 ( 2 ) crystallizes as its monohydrate via the amide functionality, resulting in infinite, parallel zigzag chains. (C 5 Me 5 )Rh(NC 5 H 4 CONH 2 ) 3 (OTf) 2 ( 3 ), along with one molecule of acetone, crystallizes via the amide functionality, resulting in infinite, doubly stranded, interwoven chains. The preparation and X-ray crystal structure of cis -(Et 3 P) 2 Pt(NO 3 ) 2 ( 1 ) is also reported.