Text this: Structural Variation and Preference in Lanthanide-pyridine-2,6-dicarboxylate Coordination Polymers

   _____     ___     _    _     ______            
  / ___//   / _ \\  | \  / ||  /_   _//     ___   
  \___ \\  | / \ || |  \/  ||   -| ||-     /   || 
  /    //  | \_/ || | .  . ||   _| ||_    | [] || 
 /____//    \___//  |_|\/|_||  /_____//    \__ || 
`-----`     `---`   `-`  `-`   `-----`      -|_|| 
                                             `-`