Highly Porous Cyanometallic Spin-Crossover Frameworks Employing Pyridazino[4,5-d]pyridazine Bridge

Autor:	Volodymyr M. Hiiuk, Sergiu Shova, Kostiantyn V. Domasevitch, Il’ya A. Gural’skiy
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	iron(II) complexes spin crossover porous coordination polymers metal-organic frameworks single-crystal X-ray diffraction Inorganic chemistry QD146-197
Zdroj:	Inorganics, Vol 10, Iss 11, p 195 (2022)
Druh dokumentu:	article
ISSN:	2304-6740
DOI:	10.3390/inorganics10110195
Popis:	Single crystals of two spin-crossover (SCO) cyanometallic coordination polymers based on the pyridazino[4,5-d]pyridazine ligand (pp) of the composition [Fe(pp)M(CN)4]∙G (where M = Pd, Pt; G = guest molecules) were obtained by a slow diffusion technique. A single-crystal X-ray analysis showed that both compounds adopted the structure of porous 3D frameworks, consisting of heterometallic cyano-bridged layers and interlayer pillar pp ligands, with a total solvent accessible volume of ca. 160 Å3 per iron(II) ion (about 37% of the unit cell volume). These frameworks displayed hysteretic SCO behaviour with T1/2 of 150/190 K (heating/cooling) for Pd complex and 135/170 K (heating/cooling) for Pt complex, which was confirmed by variable-temperature SCXRD experiments. This research shows the perspective of using pp ligand for building porous MOFs with spin transitions.
Databáze:	Directory of Open Access Journals
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