Incorporating ferrocenecarboxylato(-1) into a [Cu<sup>I</sup><sub>2</sub>(μ-dppm)<sub>2</sub>]<sup>2+</sup> (dppm = bis(diphenylphosphino)methane) scaffold for hydrogen peroxide sensing

<p>Incorporating ferrocenecarboxylato(-1) into [Cu<sup>I</sup><sub>2</sub>(μ-dppm)<sub>2</sub>]<sup>2+</sup> (dppm = bis(diphenylphosphino)methane) led to the isolation of a heterometallic complex [Cu<sub>2</sub>(μ<sub>2</sub>-η<sup>1</sup>,η<sup>1</sup>dppm)<sub>2</sub>(μ<sub>2</sub>-η<sup>1</sup>, η<sup>1</sup>FcCOO)(CH<sub>3</sub>CN)]BF<sub>4</sub>·CH<sub>3</sub>CN (<b>1</b>). It was characterized by infrared spectroscopy (IR), elemental analysis (EA), powder X-ray diffraction analysis (PXRD), ultraviolet–visible spectrum (UV–Vis), nuclear magnetic resonance (NMR), and thermogravimetric analysis (TGA). Single-crystal X-ray structural analysis revealed that ferrocenecarboxylato(-1) coordinated to the [Cu<sub>2</sub>(μ<sub>2</sub>-η<sup>1</sup>,η<sup>1</sup>dppm)<sub>2</sub>]<sup>2+</sup> unit <i>via</i> μ<sub>2</sub>-η<sup>1</sup>,η<sup>1</sup> bridging mode in <b>1</b>. The title complex shows good optical absorption and thermal stability, and reliable electrochemical stability. Moreover, this heterometallic copper(I) complex could be used as a promising electrochemical sensing material for the detection of H<sub>2</sub>O<sub>2</sub>.</p>