In situ deaminization reaction of the D-3-(4-Pyridyl)-alanine: A chiral zigzag chain and a five-fold interpenetrated diamondoid network

The reaction of Cu(NO3)2·3H2O/Zn(NO3)2·6H2O and D-3-(4-Pyridyl)-alanine (Hpyala) without or with 4,4′-bipyridine (bpy) leads to the generation of two new coordination polymers, [Cu(pyala)2]·H2O (1) and [Zn(4-pyridylacrylate)2]·H2O (2). Interestingly, the 4-pyridyacrylate ligand was derived from the in situ deaminization of the D-3-(4-Pyridyl)-alanine under the hydrothermal conditions. Single-crystal X-ray diffraction studies indicate that 1 exhibits a one-dimensional (1D) chiral chain structure; 2 exhibits 3D framework with 5-fold interpenetrated diamondoid topology, which contains open channels occupied by the lattice water molecules.

Graphical abstractThe reaction of Cu(NO3)2·3H2O/Zn(NO3)2·6H2O and D-3-(4-Pyridyl)-alanine (Hpyala) without or with 4,4’-bipyridine (bpy) leads to the generation of two new coordination polymers, [Cu(pyala)2]·H2O and [Zn(4-pyridylacrylate)2]·H2O. Interestingly, the 4-pyridyacrylate ligand was derived from the in situ deaminization of the D-3-(4-Pyridyl)-alanine under the hydrothermal conditions.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► [Cu(pyala)2]·H2O(1) and [Zn(4-pyridylacrylate)2]·H2O(2) have been synthesized. ► 4-pyridylacrylate was in situ generated from D-3-(4-Pyridyl)-alanine. ► 1 exhibits a one-dimensional chiral chain structure. ► 2 is a 3D framework with 5-fold interpenetrated diamondoid topology.