Example 27
Two Synthetic Conditions are Possible:
Synthesis 1:
0.028 g (0.5 mmol) of metallic iron powder Fe° (Riedel-de Haën, 99%), 0.225 g of gadolinium(III) nitrate hexahydrate (0.5 mmol, Aldrich, 99.9%) and 0.140 g of 1,3,5-benzenetricarboxylic acid (0.666 mmol, Aldrich, 95%) dispersed in 10 ml of deionized water, the whole left for 24 hours at 180° C. in a 23 ml Teflon body placed in a Paar metallic bomb. The solid is then filtered off and washed with water and then with ethanol.
Synthesis 2:
0.065 g (˜0.5 mmol per 1 iron per trimer) of iron(III) acetate (prepared according to the synthesis described in Example 1), 0.225 g of gadolinium(III) nitrate hexahydrate (0.5 mmol, Aldrich, 99.9%) and 0.140 g of 1,3,5-benzenetricarboxylic acid (0.666 mmol, Aldrich, 95%) dispersed in 10 ml of deionized water (or methanol or ethanol or dimethylformamide), the whole left for 12 hours at 150° C. in a 23 ml Teflon body placed in a Paar metallic bomb. The solid is then filtered off and washed with water and then with ethanol.