New ternary boride MgNiB₄: structural and hydriding properties

The crystal structure of the new orthrhombic ternary boride MgNiB₄ has been determined by the single-crystal method. The MgNiB₄ structure type represents the structure family based on AlB₂ and YCrB₄.

Investigation into the third-order nonlinear optical properties of a three-dimensional cobalt(II) coordination polymer constructed from naphthalene-1,4-di­carb­oxy­lic acid and 4,4′-({2,2-bis­[(pyridin-4-yl­oxy)meth­yl]propane-1,3-di­yl}bis­(­oxy))di­pyridine

The title three-dimensional cobalt(II) coordination polymer features a three-dimensional architecture and exhibits a significant third-order nonlinear optical absorption effect.