Crystal field theory | Nature Chemistry

News & Views | 20 July 2020

Taking titanium for a spin

Spin-1/2 kagome lattice antiferromagnets are geometrically frustrated materials poised to host yet-unobserved behaviours. Now, such a lattice has been prepared that shows no structural distortions and hosts its spin in the d_xy orbital of d¹ Ti³⁺ centres, rather than the more-widely investigated d⁹ Cu²⁺ ions.

Kelsey A. Collins
& Danna E. Freedman

Article | 14 October 2019

Planar three-coordinate iron sulfide in a synthetic [4Fe-3S] cluster with biomimetic reactivity

The four-coordinate iron sites of typical iron–sulfur clusters rarely react with small molecules, implicating three-coordinate iron in many catalytic cycles. Now, a [4Fe-3S] cluster featuring three-coordinate iron sulfide that resembles the proposed substrate binding site has been synthesized. This cluster shows biomimetic reactivity with a low-spin electronic configuration.