Spin-State-Controlled Photodissociation of Iron(III) Azide to an Iron(V) Nitride Complex

0479850 - ÚFCH JH 2018 RIV DE eng J - Journal Article
Andris, E. - Navrátil, R. - Jašík, J. - Sabenya, G. - Costas, M. - Srnec, Martin - Roithová, J.
Spin-State-Controlled Photodissociation of Iron(III) Azide to an Iron(V) Nitride Complex.
Angewandte Chemie - International Edition. Roč. 56, č. 45 (2017), s. 14057-14060. ISSN 1433-7851. E-ISSN 1521-3773
Institutional support: RVO:61388955
Keywords : Ion spectroscopy * Iron(V) nitride * Photodissociation
OECD category: Physical chemistry
Impact factor: 12.102, year: 2017

The generation of iron(V) nitride complexes, which are targets of biomimetic chemistry, is reported. Temperature-dependent ion spectroscopy shows that this reaction is governed by the spin-state population of their iron(III) azide precursors and can be tuned by temperature. The complex [(MePy(2)TACN)Fe(N-3)](2+) (MePy(2)TACN-N-methyl-N, N-bis(2-picolyl)-1,4,7-triazacyclononane) exists as a mixture of sextet and doublet spin states at 300 K, whereas only the doublet state is populated at 3 K. Photofragmentation of the sextet state complex leads to the reduction of the iron center. The doublet state complex photodissociates to the desired iron(V) nitride complex. To generalize these findings, we show results for complexes with cyclam-based ligands.
Permanent Link: http://hdl.handle.net/11104/0275775