Magnetic Coupling between Metal Spins through the 7, 7, 8, 8‐Tetracyanoquinodimethane (TCNQ) Dianion. Issue 25 (7th May 2014) - Saber, Mohamed R.
Abstract A family of magnetic metal–organic frameworks, (Ph3PMe)2[M2(TCNQ)3] {M=Fe2+, Co2+, Ni2+ and Zn2+} have been prepared and structurally characterized. The honeycomb‐like "layers" consist of MII ions doubly bridged with dinitrilomethane moieties of two 7, 7, 8, 8‐tetracyanoquinodimethane (TCNQ) dianions which are further connected through phenyl rings to form a 3D dianionic framework [M2TCNQ3]2− with Ph3PMe+ cations filling cavities that run along the c axis. Studies of the magnetic coupling through the TCNQ dianion in these structures revealed that it can promote long‐range magnetic ordering despite the long coupling pathway.