complex[Ni(La) 2 ](NO 3 )2 (1)with bidentate racemic1,2,2-trimethylcyclopentane-1,3-diamine lig-and has been synthesized and characterized by IR,EA,ES-MS,and its X-ray diffracti on study reveals that the nickel (Ⅱ)abstract: center is tetra-coordinated by one D-and one L-diamine ligands,and a thre e-dimensional hydrogen-bond-sustained network is formed in the solid state by means of the eight-membered N-H...O hydrogen bond cy-cle.This compound also su pplies a good comparison to the chiral complex[Ni(L b )2 ]Cl 2 ·2H 2 O(2)(L b =D-(+)abstract:-1,2,2-trimethylcyclopentane-1,3-diamine)abstract:.CCDC:218122.
Chiral amino acids and their corresponding amino alcohols bearing camphoric backbone were prepared from D-（＋）-camphoric imide and characterized by infrared, elemental analysis, ESI-MS, and NMR measurements. Among them, one intermediate （1S,3R）-3-amino-2,2,3- trimethyl cyclopentane-1-carboxylic acid hydrochloride 3 was structurally elucidated by X-ray diffraction techniques. Versatile intermolecular hydrogen bonding interactions observed in its packing structure result in a two-dimensional framework.
