We report the first instance of observing the phototriggered isomerization of dmso ligands on a bis sulfoxide complex, [Ru(bpy)(dmso)], in the crystalline solid state. The solid-state UV-vis spectrum of the crystal demonstrates an increase in optical density around 550 nm after irradiation, which is consistent with the solution isomerization results. Digital images of the crystal before and after irradiation display a notable color change (pale orange to red) and cleavage occurs along planes, (1̄01) and (100), during irradiation. Single crystal X-ray diffraction data also confirms that isomerization is occurring throughout the lattice and a structure that contains a mix of the , and ,/, isomer was attained from a crystal irradiated . irradiation XRD studies reveal that the percentage of the O-bonded isomer increases as a function of 405 nm exposure time.
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http://dx.doi.org/10.1039/d3sc01526b | DOI Listing |
A 1D coordination compound made of a photochromic dithienylethene linker and [Dy(Tp2-py)F]+ units (with Tp2-py = tris(3-(2-pyridyl)pyrazolyl)hydroborate) and having tetrakis[3,5-bis(trifluoromethyl)phenyl]borate counterions is reported. Full photoconversion from the closed isomer to the open isomer of the dithienyethene within single crystals allow for monitoring of the transformation by photocrystallography. Magnetic slow relaxation as well as magnetic hysteresis are observed and can be both modulated upon light irradiation.
View Article and Find Full Text PDFActa Crystallogr C Struct Chem
November 2024
Department of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland.
Acta Crystallogr C Struct Chem
October 2024
School of Chemistry, The University of Melbourne, Melbourne, Victoria 3010, Australia.
Acta Crystallogr C Struct Chem
October 2024
Department of Chemistry, University of Bath, Bath, BA2 7AY, United Kingdom.
Chem Sci
August 2024
Deutsches Elektronen-Synchrotron DESY Notkestr. 85 22607 Hamburg Germany
The application of two-photon excitation (TPE) in the study of light-responsive materials holds immense potential due to its deeper penetration and reduced photodamage. Despite these benefits, TPE has been underutilised in the investigation of the photoinduced spin crossover (SCO) phenomenon. Here, we employ TPE to delve into the out-of-equilibrium dynamics of a SCO Fe dimer of the form [Fe(HL)](BF)·2MeCN (HL = 3,5-bis{6-(2,2'-bipyridyl)}pyrazole).
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