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Bonding Scheme Hydride Character and Magnetic Paths of HPO3 2 Versus SeO3 2 Building Units in Solids       
Yazarlar (8)
Kovrugin Vadim M
Gordon Elijah E
Prof. Dr. Emine Esra KASAPBAŞI Prof. Dr. Emine Esra KASAPBAŞI
Haliç Üniversitesi, Türkiye
Whangbo Myunghwan
Colmont. Marie
Silvue Colis
Krivovichev Sergey V
Mentre Oliver
Devamını Göster
Özet
The abilities of the (HPO3)2- and (SeO3)2- anions as structure building units and as spin exchange paths between magnetic ions were investigated by preparing and analyzing the isostructural Fe2(SeO3)3 and Fe2(HPO3)3. In both compounds, the face-sharing Fe2O9 dimers are interconnected into chains by the (HPO3)2- and (SeO3)2- anions. The (HPO3)2- is the structural counterpart of the Se electron lone pair of (SeO3)2- due to the weak hydride character of the terminal hydrogen. However, they differ considerably as spin exchange paths between magnetic cations. Both compounds exhibit an effective magnetic dimer behavior, unexpectedly arising from the interdimer Fe - O···O - Fe exchange along the chain, but weaker in Fe2(HPO3)3 by a factor of ∼3. It is consistent with the general tendencies of the phosphite anions to act as a weak magnetic mediator, which is caused by the through-bond effect of the P3+ ion in the Fe - O···P3+···O - Fe exchange path, much weaker than in the selenite phase in absence of P3+d contribution. Reasons for stronger exchanges through phosphates or sulfates are also discussed.
Anahtar Kelimeler
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı The Journal of Physical Chemistry C
Dergi ISSN 1932-7447 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SSCI
Dergi Grubu Q4
Makale Dili İngilizce
Basım Tarihi 01-2016
Cilt No 120
Sayı 3
Sayfalar 1650 / 1656
Doi Numarası 10.1021/acs.jpcc.5b10889
Makale Linki http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.5b10889