Single crystal to single crystal transition in (10, 3)-d framework with pyrazine-2-carboxylate ligand: Synthesis, structures and magnetism

► New (10,3)-d net was obtained with pyrazine-2-carboxylate ligands as a triangular node. ► The complex 1 has a 1D channel filled with methanol molecules as guests. ► 1 could undergo SCSC structural transition to 2 after guests exchanged. ► Antiferromagnetic interactions were found in 1 and 2.