To Be or Not to Be a (4,4) Net: Reactions of 4′-{4-(N,N-Diethylaminophenyl)}- and 4′-{4-(N,N-Diphenylaminophenyl)}-3,2′:6′,3″- and 4,2′:6′,4″-Terpyridines with Cobalt(II) Thiocyanate

The ligands 4′-{4-(N,N-diethylaminophenyl)}-3,2′:6′,3″-terpyridine (1) and 4′{4-(N,N-diphenylaminophenyl)}-3,2′:6′,3″-terpyridine (2) were prepared characterized, including the single crystal structure of 2. Along with their 4,2′:6′,4″-terpyridine isomers, 3 4, 1 2 reacted Co(NCS)2 under conditions growth by layering, using solvent mixtures MeOH CHCl3. structures [Co(NCS)2(1)]n·0.8nCHCl3, [Co(NCS)2(2)2(MeOH)2]·3CHCl3, [Co(NCS)2(3)]n·2nCHCl3, [Co(NCS)2(4)]n determined. complexes 1, 3, 4 assemble into 2D (4,4) nets Co(II) centres as 4-connecting nodes, whereas [Co(NCS)2(2)2(MeOH)2] is a discrete molecular species, illustrating that can act non-innocent solvent. effects on changing from 3,2′:6′,3″-terpyridine (3,2′:6′,3″-tpy) to 4,2′:6′,4″-tpy metal-binding unit, introducing R2N functionalities different steric demands, are discussed. PXRD bulk samples all four products confirmed single-crystal representative materials.