Single-crystal X-ray diffraction data were collected using a Nonius KappaCCD diffractometer, using graphite monochromated MoKα radiation (λ = 0.7107 Å). Structure solution was carried out using SHELXT and refinement with SHELXL, within the OLEX2 graphical interface. All non-hydrogen atoms were refined anisotropically with no additional restraints or constraints. Supplementary crystallographic data for this paper including of all single crystal structures can be found in the supplementary information and were deposited in the CCDC 1860296-1860300. The data can be obtained free of charge from The Cambridge Crystallographic Data Centre via www.ccdc.cam.ac.uk/structures. They are also available at the Crystallography Open Database (www.crystallography.net/cod/).