Abstract
Two new 3-D Ce(III) coordination polymers, [Ce
1.3
(PTA)
2
(Oxa)
2
(Gly)(H
2
O)
2
]·(Gly)4H
2
O (1) and [Ce
2.6
(PTA)
4
(Oxa)
2
(H
2
O)
10
]·(MeOH)7H
2
O (2) (PTA = 2,4,6-pyridinetricarboxylate, oxa = oxalate and Gly = glycine), were synthesized. The oxalate in 1 and 2, generated in situ from the cleavage and chemical rearrangement of PTAH
3
, assembled into mixed-ligand networks to generate 3-D frameworks. Single crystal analysis reveals that in both complexes, Ce(III) shows coordination numbers of 7 and 10 in 1 and 8 and 10 in 2. PTA adopts four kinds of coordination modes. These complexes were further characterized using elemental analysis, FTIR spectroscopy and thermogravimetric analysis.