Chiral three-dimensional microporous nickel aspartate with extended Ni-O-Ni bonding.

摘要: In the course of our investigation aimed at preparation homochiral coordination polymers using readily available in optically pure form ligands and building blocks condensed metal polyhedra, we recently reported a one-dimensional nickel aspartate compound [Ni2O(l-Asp)(H2O)2]·4H2O (1) based on helical chains with extended Ni−O−Ni bonding. Here report new [Ni2.5(OH)(l-Asp)2]·6.55H2O (2) three-dimensional connectivity that forms higher pH is same helices as 1 which are connected by additional octahedra to generate chiral open framework channels minimum van der Waals dimensions 8 × 5 A. The crystal structure 2 was determined synchrotron single-crystal X-ray diffraction 10 240 μm crystal.