1D chain coordination assembly of [Mn4(hmp)6(NO3)2]2+ single-molecule magnets linked by the photochromic [FeNO(CN)5]2− precursor

The first heterometallic chain cluster {[Mn4(hmp)6(NO3)2FeNO(CN)5·4CH3CN}n (1) based on the [Mn4(hmp)6] SMM has been synthesized. 1 has one-dimensional chain structure: the [Mn4(hmp)6] units are linked via CN-groups of nitroprusside anions. Its magnetic and relaxation properties and low temperature IR spectra under light irradiation have been investigated. The ferromagnetic exchange constants have been calculated.

Graphical abstractThe first heterometallic chain cluster {[Mn4(hmp)6(NO3)2FeNO(CN)5]·4CH3CN}n based on the [Mn4] single-molecule magnets with photochromic nitroprusside bridges has been synthesized.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► The first chain cluster of [Mn4(hmp)6] with nitroprusside (NP) bridges was prepared. ► The [Mn4] units are linked via CN-groups of NP anions. ► The magnetic properties of it are defined the ferromagnetic interactions inside SMM Mn4 units. ► {[Mn4][NP]·4CH3CN}n is not photochromic.