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C 26 H 20

A new lanthanide-organic framework incorporating both substituted isonicotinic acid and oxalate coligand has been fabricated successfully through solvo thermal reaction, namely, {[Er(µ 2 H 2 Minca)](µ 2 C 2 O 4 · 2H 2 O] · 2H 2 O} n (I) (H 3 Minca = 2 (hydroxyl) 6 methyl isonicotinic acid, H 2 C 2 O 4 = oxalate acid). Complex I exhibits two dimensional (2D) corrugated networks with a 6 3 topology, in which {LnO 8 } polyhedron units are alternately linked through carboxylate and oxalate oxygen atoms into the 2D sheet layer (CIF file CCDC no. 948026). Thermogravimetric and different thermal analysis measurements indi cate that I displays high thermal stability. Complex I also shows characteristic f-f transition luminescence emission in NIR region.

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