A Photoinert Member of a Photosensitive Family. Structural Studies of Cobalt(III) Nitropentammine Malonate, [Co(NH3)5NO2]C3H2O4, under Variable Temperature and Pressure Help to Explain the Phenomenon | Sciact - CRIS-system of Boreskov Institute of Catalysis

A Photoinert Member of a Photosensitive Family. Structural Studies of Cobalt(III) Nitropentammine Malonate, [Co(NH3)5NO2]C3H2O4, under Variable Temperature and Pressure Help to Explain the Phenomenon Full article

Journal

Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials
ISSN: 2052-5192 , E-ISSN: 2052-5206

Output data

Year: 2025, Volume: 81, Number: 5, DOI: 10.1107/s2052520625006742

Tags

photomechanical effects; linkage isomerization; photocrystallography; coordination compounds; hydrogen bonds

Authors

Kalinina Polina P. ¹ , Zakharov Boris A. ¹ , Boldyreva Elena V. ¹

Affiliations

1	Novosibirsk State University, Pirogova 2, 630090 Novosibirsk, Russian Federation

A large family of photosensitive [Co(NH3)5NO2]XY compounds is known to manifest mechanical effects accompanying intramolecular photochemical linkage nitro–nitrito isomerization. A new member of this family, a malonate, [Co(NH3)5NO2]C3H2O4, was synthesized for the first time and shown to be photoinert. The compound appears to be the first photoinert member of the family. The crystal structure was analysed both at ambient conditions and under variable temperature and pressure, and compared to previously known members of the family in order to rationalize such behaviour. A reversible isosymmetric single-crystal to single-crystal phase transition was observed at pressures between 2.4 and 3.0 GPa, and the crystal structure of a new high-pressure phase was solved and refined. Possible driving forces for the phase transition are discussed.

Kalinina P.P. , Zakharov B.A. , Boldyreva E.V.
A Photoinert Member of a Photosensitive Family. Structural Studies of Cobalt(III) Nitropentammine Malonate, [Co(NH3)5NO2]C3H2O4, under Variable Temperature and Pressure Help to Explain the Phenomenon
Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials. 2025. V.81. N5. DOI: 10.1107/s2052520625006742 OpenAlex

Submitted:	Jun 10, 2025
Accepted:	Jul 28, 2025

OpenAlex:

W4414035643

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