Structure and Magnetic Ordering of K<i><sub>x</sub></i>H<sub>1</sub><sub>-</sub><i><sub>x</sub></i>Ni(OH<sub>2</sub>)<sub>4</sub>[Ru<sub>2</sub>(CO<sub>3</sub>)<sub>4</sub>]·<i>z</i>H<sub>2</sub>O
Bretni S. Kennon (2318971)Jae-Hyuk Her (1769134)Peter W. Stephens (1669927)William W. Shum (2188321)Joel S. Miller (1754278)
Abstract
K<i><sub>x</sub></i>H<sub>1</sub><sub>-</sub><i><sub>x</sub></i>Ni(OH<sub>2</sub>)<sub>4</sub>[Ru<sub>2</sub>(CO<sub>3</sub>)<sub>4</sub>]·<i>z</i>H<sub>2</sub>O is a ferrimagnet (<i>T</i><sub>c</sub> = 4.3 K)\nformed from the reaction of K<sub>3</sub>[Ru<sup>II/III</sup><sub>2</sub>(CO<sub>3</sub>)<sub>4</sub>] and Ni<sup>II</sup> in water. It\npossesses a new 3-D network structural motif composed of linked\nchains and μ<sub>3</sub>-CO<sub>3</sub> linkages to both Ru and Ni sites. Each Ni(II)\nbonds to four oxygens and to two [Ru<sub>2</sub>(CO<sub>3</sub>)<sub>4</sub>]<sup>3-</sup> moieties in a cis\nmanner, and four μ<sub>3</sub>-CO<sub>3</sub> groups from each [Ru<sub>2</sub>(CO<sub>3</sub>)<sub>4</sub>]<sup>3-</sup> have\ntwo oxygens bonding to the Ru<sub>2</sub> moiety, forming the typical paddle-wheel core, and trans pairs of the third CO<sub>3</sub><sup>2-</sup> oxygen axially\nbonded to either another Ru<sub>2</sub> or Ni<sup>II</sup>.
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