Self-assembly of a 1D helical manganese coordination polymer and a tetranuclear lanthanum complex with 1,10-phenanthroline and 3,5-dinitrosalicylato dianion

The hydrothermal reaction of manganese chloride and lanthanum nitrate with 3,5-dinitrosalicylic acid (3,5-(NO2)2sal) and 1,10-phenanthroline (phen) yielded two compounds [Mn(phen){3,5-(NO2)2sal2−}]n (1) and La2(phen)3{3,5-(NO2)2sal2−}2 (NO3)(OH) (2). Magnetic susceptibility measurements show weak antiferromagnetic interactions in (1).