The use of [Fe(dithiooxalate)2(NO)]2− as a tecton in crystal engineering

摘要: A series of crystalline salts based on the complex dianion [Fe(dto)2(NO)]2− (dto = 1,2-dithiooxalate) with hydrogen-bond donor cations have been synthesised. The preparation and structural characterisation new phases [4,4′-H2bipy][Fe(dto)2(NO)]·H2O (1), [3,3′-H2bipy][Fe(dto)2(NO)] (2) [H2Me4bipyz][Fe(dto)2(NO)]·2H2O (3) (Me4bipyz 3,3′,5,5'-tetramethyl-4,4′-bipyrazole) are reported, show that a charge-assisted NH⋯dto synthon is formed in each compounds 1–3. In compound 1 anion forms dimer solid-state, variable temperature magnetic susceptibility measurements reveal weak antiferromagnetic interaction best fit superexchange parameter J –3.18 cm−1, where H –2JS1S2.