Diffraction data for 1 was collected using a Oxford Diffraction Xcalibur diffractometer with MoKα radiation, and is given in Table . An Oxford Cryosystems Cryostream 700+ low temperature device was used to maintain a crystal temperature of 120.0 K. The structure was solved using ShelXT and refined with version ShelXL interfaced through Olex2. All non-hydrogen atoms were refined using anisotropic displacement parameters. H atoms were placed in calculated positions geometrically and refined using the riding model. CCDC = 2090901.