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Light‐Induced Spin‐State Switching of the Mo IV Centre in Trinuclear [Cu II (diamine) 2 ] 2 [Mo IV (CN) 8 ] Molecules
Author(s) -
Korzeniak Tomasz,
Sasmal Sujit,
Pinkowicz Dawid,
Stefańczyk Olaf,
Sieklucka Barbara
Publication year - 2018
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201800138
Subject(s) - chemistry , ethylenediamine , crystallography , molecule , singlet state , antiferromagnetism , paramagnetism , ground state , diamine , spin states , crystal structure , inorganic chemistry , excited state , polymer chemistry , atomic physics , physics , organic chemistry , quantum mechanics , condensed matter physics
New trinuclear molecules [Cu(meen) 2 ] 2 [Mo IV (CN) 8 ] · 5H 2 O ( 1 ) and [Cu(eten) 2 ] 2 [Mo(CN) 8 ] · 7H 2 O ( 2 ) (meen = N ‐methyl‐ethylenediamine; eten = N ‐ethyl‐ethylenediamine) have been prepared and characterised by X‐ray diffraction and dc magnetometry. The crystal structure of 1 and 2 consists of trinuclear Cu 2 Mo molecules interacting through weak semicoordination bonds and resulting in the formation of 2D and 3D supramolecular networks, respectively. In the ground state, both molecules exhibit simple paramagnetic behaviour, with very weak antiferromagnetic interaction present at low temperatures. The photomagnetic studies of 1 and 2 , performed using 436 nm light, have shown a significant increase in the magnetisation upon irradiation that might be explained in terms of a singlet–triplet transition at Mo IV .