@misc{10481/107171,
year = {2025},
month = {12},
url = {https://hdl.handle.net/10481/107171},
abstract = {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.},
organization = {MCIN/AEI/10.13039/501100011033 / Unión Europea – Next Generation EU/PRTR (PID2021-126445OB-I00, PID2023-150047OA-I00, CPP2022-009967, CNS2022-135779, PID2022-139956OB-I00)},
organization = {Junta de Andalucía (FQM-376, FQM-394, ProyExcel_00105)},
organization = {University of Almería (P_LANZ_2024/009)},
organization = {FPU (FPU22/01199)},
organization = {Juan de la Cierva (JDC2022-048964-I)},
organization = {Ramón y Cajal (RYC2021-032522-I)},
organization = {University of Almería (HIPATIA2021_04)},
publisher = {Elsevier},
keywords = {Metal organic framework},
keywords = {Calcium},
keywords = {Hydroboration},
title = {An efficient and highly recyclable calcium-based metal-organic framework for green cyanosilylation and hydroboration catalytic reactions},
doi = {10.1016/j.inoche.2025.115538},
author = {López-Vargas, Mireya E. and Morales Cámara, Samuel and Pérez, Juana M. and Salcedo-Abraira, Pablo and Rodríguez-Diéguez, Antonio and Rojas, Sara and Fernández, Ignacio},
}