Two different three-dimensional microporous framework structures in [Mn₂(H₂O)₄{W(CN)₈}·4H₂O]_nand [Mn₂(H₂O)₄{W(CN)₈} (OH)·2H₂O]_n

Abstract

Two novel cyano-bridged heterobimetallic coordination polymers, [Mn2(H2O)4{W(CN)8}·4H2O]n (1) and [Mn2(H2O)4{W(CN)8}(OH)·2H2O]n (2), have been synthesized from [W(CN)8]n− (n = 4, 5) building blocks and structurally characterized, where all the CN groups of [W(CN)8]n− are involved in bridging. Both polymers display different open microporous frameworks of the 3D polygonal type exhibiting zeolite-like properties. The 3D framework of 2 is unprecedented. The study of the magnetic properties showed that both polymers exhibit weakly antiferromagnetic interactions between the adjacent Mn ions through the diamagnetic NC–WIV–CN spacer for 1 and between WV and Mn ions for 2.