Tricarbonyl-Pyrazine-Molybdenum(0) Metal-Organic Frameworks for the Storage and Delivery of Biologically Active Carbon Monoxide.

"The authors declare no competing financial interest."

"We acknowledge funding provided within the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020, UIDP/50011/2020 & LA/P/0006/2020, the CENTRO 2020 Regional Operational Programme (project CENTRO-01-0145-FEDER-028031 and PTDC/QUI-QOR/28031/2017), and COMPETE 2020 Operational Thematic Program for Competitiveness and Internationalization (project POCI-01-0145-FEDER-030075), financed by national funds through the FCT (Fundação para a Ciência e a Tecnologia)/MEC (Ministério da Educação e Ciência) (PIDDAC) and, when applicable, co-financed by the European Union through the European Regional Development Fund (ERDF) under the Portugal 2020 Partnership Agreement. The NMR spectrometers are part of the National NMR Network (PTNMR) and are partially supported by Infrastructure project no. 022161 (co-financed by ERDF through COMPETE 2020, POCI and PORL, and FCT through PIDDAC). I.B.C. is grateful to the FCT for a PhD studentship (2021.05953.BD). A.C.G. thanks the FCT/MCTES for funding through the Individual Call to Scientific Employment Stimulus (CEECIND/02128/2017). Author Contributions: Andreia F. Silva: Methodology, Validation, Investigation, Writing - Original Draft. Isabel B. Calhau: Methodology, Validation, Investigation, Writing - Original Draft. Ana C. Gomes: Validation, Investigation, Writing - Original Draft. Anabela A. Valente: Resources, Writing - Review & Editing. Isabel S. Gonçalves: Resources, Project administration, Conceptualization, Supervision, Writing - Review & Editing. Martyn Pillinger: Resources, Funding acquisition, Project administration, Supervision, Visualization, Writing - Review & Editing."