Compounds of iron(III) with trans-1,4,8,11-tetraazacyclotetradecane-6,13-dicarboxylic acid: structures of trans-(trans-1,4,8,11-tetraazacyclotetradecane-6,13-dicarboxylato)iron(III) perchlorate and trans-(trans-1,4,8,11-tetraazacyclotetradecane-6,13-dicarboxylato)iron(III) trans-(trans-1,4,8,11-tetraazacyclotetradecane-6,13-dicarboxylic acid) dichloroiron(III) trans-1,4,8,11-tetraazoniacyclotetradecane-6,13-dicarboxylic acid dichloride tetraperchlorate tetrahydrate