Hydrothermal versus Nonhydrothermal Synthesis for the Preparation of Organic−Inorganic Solids:  The Example of Cobalt(II) Succinate

Abstract

Hydrothermal technique was used together with a room-temperature process for the synthesis of cobalt-succinate compounds. Four structures are described for two new compounds: K 2 Co(C 4 H 4 O 4 ) 2 and Co(H 2 O) 4 (C 4 H 4 O 4 ). Whatever the solution conditions, carboxylate ligands, which possess a strong nucleophilic character, coordinate each metal ion. However, the coordination ability of carboxylate under hydrothermal conditions is different from that under mild ones. For high-temperature phases, carboxylic groups are multidentate and the organic acts as a "template" during the condensation of the oxygenmetal networks, whereas under room temperature conditions, they are unidentate and infinite structures are obtained via the bridging role of the ligand.

The Effect of Hydrothermal and Non‐Hydrothermal Synthesis on the Formation of Holmium(III) Succinate Hydrate Frameworks

“…According to the literature, hydrothermal conditions are more suitable for preparing 3D solids with extended M-O-M networks, which favors better thermal stability since they enhance metal-ligand interactions rather than metal-water coordination. [18,19] According to Férey et al, [20] although helping the formation of M-O-M networks, hydrothermal conditions preclude the assistance of computer simulations in the rational design of this kind of compounds as hydrothermal conditions modify the nature of the species in solution.…”

A Three‐Dimensional Metal–Organic Framework with an Unprecedented Octahedral Building Unit

“…Oligomerization is induced by heating either in solution or in the solid state. [15][16][17] The title compound, Na 3 [Co 6 O(OH)(C 8 H 4 O 4 ) 6 ]·H 2 O (MIL-104), was synthesized by a classical solvothermal reaction. The hexamers are formed in situ by self-assembly and linked into an original three-dimensional network by the isophthalate dianions.…”

Crystal structure of tatrakis(1,10-phenanthroline)-fumarato-dilead(II) nitrate, [Pb2(C12H8N2)4(C4H2O4)](NO3)2

“…Currently, rational design and synthesis of coordination polymers using rigid di-and polycarboxylates as bridging spacers are of growing interests [5,6]. On the other hand, exploitation of conventional saturated a,w-dicarboxylates as flexible bridging spacers to constitute coordination polymers aroused extensive attentions of many laboratories [7][8][9][10][11]. Among the saturated a,wdicarboxylate anions, the fumarate ligands are of special interest.…”