Rational Design, Synthesis and Crystal Structure Investigation of Hydrogen‐Bonded Coordination Polymers of Bicyclic Bis‐Lactam Dicarboxylates

Abstract

The crystal structures of the racemic coordination polymers (±)‐1 to (±)‐4 and the coordination dimers (±)‐6 and (±)‐7, containing molecular “brick walls” with inorganic coatings and molecular “brick walls” with mixed organic‐inorganic coatings, respectively, were predicted and verified on the basis of the zigzag R22(8) H‐bonded tape columnar packing motif of the purely organic racemic dialkyl 3,6‐dioxo‐2,5‐diazabicyclo[2.2.2]octane‐1,4‐dicarboxylates. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)

Coordination polymer networks with s-block metal ions

“…A claim for rational design based on metal ion coordination and H-bonding for the construction of polymer structures with alkaline earth metal ions is the use of bicyclic bis-lactamdicarboxylate ions as bricks for two-dimensional compounds [68]. The products are obtained by transmetallation of the alkali salts by alkaline earth halides to yield different compounds depending on the H-bonding capacity and the metal ion size (Fig.…”

A calcium(II) coordination polymer showing two different bridging 2-carbamoyl-4-nitrobenzoate coordination modes

“…For oxophilic s-block metals, carboxylic acid based ligands are useful for the construction of coordination polymers as the metals can be linked into an extended chain with bridging carboxylate. For the preparation of coordination polymers different synthetic methodologies, namely, aqueous reaction of metal carbonate or hydroxide with the carboxylic acid under ambient conditions [5][6][7][8][9][10][11][12], reaction of aqueous metal chloride or nitrate with the carboxylic acid in the presence of a mild base [13][14][15][16][17][18][19][20][21], and hydrothermal reaction of metal sources with carboxylic acids [22][23][24][25][26][27][28][29][30] are employed. Several coordination polymers based on alkaline earth metals have been synthesized and structurally characterized .…”

10.1007/s11445-008-2005-3

“…Crystals with specified physicochemical properties are fabricated with application of self-assembly of molecules or ions due to specific interactions and, especially, hydrogen and coordination bonds [4,7,8]. The combination of these two types of interactions allows one to obtain unusual hybrid materials [4,9]. Despite the undoubted success in this field, difficult problems of a priori estimation of the properties of materials are still to be solved.…”