Two Chiral Metal Complex Templated Aluminoborates Constructed from Three Types of Oxoboron Clusters.

The two acentric aluminoborates (ABOs) [M(dap)]{Al[BO(OH)][BO(OH)][BO(OH)]} (M and dap represent Co()/Ni() and 1,2-diaminopropane, respectively) templated by chiral metal complexes (CMCs) have been solvothermally synthesized. The isostructural and crystallize in the chiral space group 2. Both feature unprecedented 2D wavelike layers built by three kinds of oxoboron (B-O) clusters ([BO(OH)], [BO(OH)], and [BO(OH)]) and AlO tetrahedra. In the frameworks of and , AlO and [BO(OH)] units are strictly alternating into 1D chains. Further, [BO(OH)] clusters link adjacent chains to form 2D wavelike layers. In addition, the [BO(OH)] units as the hanging clusters are supported on two sides of the wavelike layers through AlO groups, resulting in the first example of a wavelike layer ABO composed of three kinds of B-O clusters and four types of channels. and display second-harmonic generation (SHG) signals about ∼1.3 and ∼0.93 times that of KHPO (KDP) and belong to the class of wide-band-gap semiconductors.