Aqua cadmium cyanide coordination polymer with nitronyl nitroxide radical

A new three-dimensional diamagnetic metal nitronyl nitroxide radical coordination polymer with an aqua cadmium cyanide framework Cd(NIT4py)(H2O)Cd(CN)4·H2O 1, was synthesized. X-ray crystallography reveals that the structure consists of 3D aqua cadmium cyanide built up by octahedral CdII coordinating to NIT4py and tetrahedral CdII (CN)4 units. Magnetic measurements show that the χmT values are nearly constant at higher temperature. The lower χmT values at lower temperature are related to intermolecular antiferromagnetic interactions of the radicals, which arise due to the hydrogen bonded network (TN = 21 K).

Graphical abstractA new three-dimensional diamagnetic metal nitronyl nitroxide radical coordination polymer with aqua cadmium cyanide framework: Cd(NIT4py)(H2O)Cd(CN)4·H2O 1 was synthesized. X-ray crystallography reveals that structure consists of 3D aqua cadmium cyanide built up by octahedral CdII coordinating to NIT4py and tetrahedral CdII (CN)4 unit. The magnetic measurements show that the χmT values are nearly constants at higher temperature. The shape decreasing of χmT values at lower temperature is related to intermolecular antiferromagnetic interactions of the radicals, which results from the hydrogen bond networks (TN = 21 K).Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A new nitronyl nitroxide radical compound: Cd(NIT4py)(H2O)Cd(CN)4·H2O 1 was synthesized. ► X-ray data shows that the structure consists of 3D aqua cadmium cyanide coordinating to NIT4py. ► The lower χmT values at lower temperature is related to antiferromagnetic interactions. ► The interactions result from the hydrogen bond networks.