Exploring the Assembly, Structures, and Magnetism\nof Cyanometallate-Driven Coordination Polymers

Two\nheterometallic cyanometallate-driven Cu(II)/Co(III) coordination\npolymers, [{Cu<sub>2</sub>K(H<sub>2</sub>tipa)<sub>2</sub>(H<sub>2</sub>O)<sub>4</sub>}Co(CN)<sub>6</sub>]<sub><i>n</i></sub>·4<i>n</i>H<sub>2</sub>O (<b>1</b>) and [{Cu<sub>2</sub>(H<sub>2</sub>tea)<sub>2</sub>}<sub>3</sub>{Co(CN)<sub>6</sub>}<sub>2</sub>]<sub><i>n</i></sub>·10<i>n</i>H<sub>2</sub>O (<b>2</b>), were self-assembled from Cu(NO<sub>3</sub>)<sub>2</sub>, an aminoalcohol chelator (H<sub>3</sub>tipa, triisopropanolamine;\nor H<sub>3</sub>tea, triethanolamine), and K<sub>3</sub>[Co(CN)<sub>6</sub>]. The compounds were fully characterized by single-crystal\nand powder X-ray diffraction, FTIR spectroscopy, and thermogravimetric\nand elemental analyses, revealing 1D (<b>1</b>) and 2D (<b>2</b>) metal–organic architectures with 2C1 and <b>hcb</b> topologies constructed from [Cu<sub>2</sub>K(H<sub>2</sub>tipa)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]<sup>3+</sup> or [Cu<sub>2</sub>(H<sub>2</sub>tea)<sub>2</sub>]<sup>2+</sup> blocks and [Co(CN)<sub>6</sub>]<sup>3–</sup> linkers. A detailed magnetic study of <b>1</b> and <b>2</b> was performed by variable-temperature\nmagnetic susceptibility measurements and broken symmetry DFT calculations.\nThese new compounds expand a family of heterometallic coordination\npolymers derived from hexacyanocobaltate(III) linkers, with compound <b>1</b> also representing the first structurally characterized heterotrimetallic\nCu/Co/K derivative.