A 3D heterometallic framework containing Co–O–Li linkages: Hydrothermal synthesis, crystal structure and magnetic property

Using dioxyacetic acid (H2oda), CoCl2·6H2O and LiOH, a three-dimensional (3D) heterometallic complex [CoLi2(oda)2]n (1) containing 1D Co–O–Li chains has been isolated under hydrothermal conditions. 1 represents a 3D hybrid magnetic rigid framework. To the best of our knowledge, such a chain with the arrangement of Co–O–Li linkages based on carboxylic acid has been first reported. Further analysis reveals that cis-conformation of dioxyacetic acid greatly favor chelate coordination of lithium(I) centers. Magnetic measurements indicate that in the low temperature, complex 1 shows weak ferromagnetic interaction, indicative of spin-canting behavior.