The modularity of metal-organic materials means that compounds with identical structural topologies but different ligands can be readily synthesised (they are 'isoreticular'). This in turn enables the synthesis of diverse and extensive ligand solid-solutions, which allows control of chemical function, e.g. methane separation and catalytic activity . The physical properties of metal-organic frameworks (MOFs), e.g. mechanical, magnetic, or electronic function, can equally be controlled through ligand solution. There remains a great deal to learn about the physical properties of mixed-ligand MOFs, especially the possibility of creating function that goes beyond the linear combination of stoichiometric end-members. Recent work has shown that ligand solid-solutions in zeolitic imidazolate frameworks (ZIFs) subtly modulate the magnetic ordering temperatures of sod topology ZIFs and control the pressure-induced pore closing ZIF-4 analogues, and that solid-solutions of terminal halide ligands in Cr(pyz) 2 Br x I 2-x produce temperature-induced valence tautomeric transitions not present in the stoichiometric phases. Ligand solid-solution control over mechanical and magnetic function in vdW magnets is of special interest because pressureand strain-control over magnetic function can be readily achieved in devices. This is particularly true for noncollinear magnets, where continuous evolution of magnetic order and properties is possible. We have recently reported a family of new layered MOMs with non-collinear magnetic structures, including the canted ferromagnet NiCl 2 (btd). This material consists of NiCl 2 chains coordinated by the nitrogens of the nonlinear btd ligand to form corrugated sheets [Fig. ]. The easy-axis ferromagnetic chains in combination with the tilting of chains induced by the ligand geometry, leads to noncollinear canted ferromagnetism with significant coercive field, µ 0 H c = 1.0(1) T. The modularity of this system, together with the promise of its magnetic function, prompted us to investigate how substitution of the btd ligand for bod will affect both the structure, and the magnetic and mechanical properties of this MOM.