Bis(amides) of the type CH(3)CONH(CH(2))(n)()NHCOCH(3) (n = 2, 4, or 6) react with a range of manganese(II) and cobalt(II) salts to produce polymeric "framework" arrays, five of which have been studied by X-ray crystallography. Hexamethylenebis(acetamide) (HMBA) forms the compound [Co(HMBA)(3)](CoCl(4)).2EtOH in which the HMBA molecules bridge the metal centers, binding octahedrally via the oxygen atoms of the amide groups and forming cationic arrays of large rhomboidal "boxes" containing tetrahedral CoCl(4)(2-) ions. The butylenebis(acetamide) (BBA) complex [Co(BBA)(3)]Br(2) forms a sheet cationic network, but in this case, the counteranions are simple bromide ions. The ethylenebis(acetamide) (EBA) complex [Co(EBA)(2)(H(2)O)(2)]Br(2) comprises trans-octahedral [Co(O-amide)(4)(H(2)O)(2)](2+) units interlinked by the bridging action of the EBA ligands to form sheet arrays, with simple bromide counterions. From the reaction of HMBA with manganese(II) bromide two crystalline forms were obtained, [Mn(HMBA)(3)](MnBr(4)).2EtOH, with a structure similar to [Co(HMBA)(3)](CoCl(4)).2EtOH, and a solvent-free form, [Mn(HMBA)(3)](MnBr(4)), comprising a cationic sheet array. The preparations of several other transition-metal complexes with these ligands are reported together with relevant spectroscopic data.

A significant step towards the development of a new family of metal‐organic zeolite analogues has been achieved by binding zinc ions to the anion of 4,6‐di(1‐imidazolyl)‐1,3,5‐triazine‐2‐one to produce a novel uncharged large‐pore zeotype capable of incorporating a range of guest molecules.

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