An efficient and highly recyclable calcium-based metal-organic framework for green cyanosilylation and hydroboration catalytic reactions López-Vargas, Mireya E. Morales Cámara, Samuel Pérez, Juana M. Salcedo-Abraira, Pablo Rodríguez-Diéguez, Antonio Rojas, Sara Fernández, Ignacio Metal organic framework Calcium Hydroboration A new calcium-based metal–organic framework (MOF), named GR-MOF-32, with chemical formula {Ca (C20H10N2O4)⋅2H2O}n ({[Ca(BCA)] 2H2O}n), has been synthesized using the biquinoline ligand 2,2′-bicinchoninic acid (H₂BCA) via a solvothermal method. This MOF is homologous to the previously reported GR-MOF-11 to 14 series (Sr, Y, Cd, Ba) and has been fully characterized through elemental and thermogravimetric analyses, Fourier transform infrared spectroscopy (FTIR), photoluminescence, dynamic light scattering, electrophoretic mobility, and single-crystal and powder X-ray diffraction (SCXRD and PXRD). The structural analysis reveals a highly connected framework that preserves the Janus-head topology of the ligand, similar to its homologous counterparts. The catalytic performance of GR-MOF-32 was evaluated in cyanosilylation and hydroboration reactions showing excellent recyclability, maintaining high catalytic activity all over the seven cycles in both reactions, with only a marginal loss in calcium content and no significant structural changes as confirmed by PXRD and FTIR analysis. In comparison with its homologous catalysts (GR-MOFs 11–14), GR-MOF-32 exhibited superior catalytic performance with a lower catalyst loading (0.2 mol%) and achieved full conversion for most substrates. This study expands the family of GR-MOFs with an s-block metal member such as calcium and highlights the potential of calcium-based MOFs in highly efficient catalyst in both cyanosilylation and hydroboration reactions. 2025-10-20T11:10:38Z 2025-10-20T11:10:38Z 2025-12 journal article López-Vargas, M. E., Morales-Cámara, S., Pérez, J. M., Salcedo-Abraira, P., Rodríguez-Diéguez, A., Rojas, S., & Fernández, I. (2025). An efficient and highly recyclable calcium-based metal-organic framework for green cyanosilylation and hydroboration catalytic reactions. Inorganic Chemistry Communications, 182(115538), 115538. https://doi.org/10.1016/j.inoche.2025.115538 https://hdl.handle.net/10481/107171 10.1016/j.inoche.2025.115538 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional Elsevier