Spin state behavior of a pH-responsive cobalt(II) complex with a bis(pyrazol-3-yl)pyridine ligand

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详细

A new cobalt(II) complex [Co(L)2](ClO4)2 is synthesized by the reaction of 2,6-bis(pyrazol-3-yl)pyridine (L) containing deprotonable hydroxyl groups with cobalt(II) perchlorate hexahydrate in deuterated methanol in an NMR tube. The possibility of its reversible deprotonation under the action of 1,8-diazabicyclo[5.4.0]undec-7-ene in situ is demonstrated. Variable-temperature ¹H NMR studies (200–325 K) reveal that the complex maintains a high-spin state both before and after complete deprotonation. Single-crystal X-ray diffraction data of the fully deprotonated complex [Co(L-2H)2](DBU + H)2 (CCDC № 2448321) indicate that it also retains the high-spin state in the crystalline phase.

作者简介

E. Safiullina

Nesmeyanov Institute of Organoelement Compounds; Topchiev Institute of Petrochemical Synthesis

Email: yulia.v.nelyubina@gmail.com
Moscow, Russia; Moscow, Russia

I. Nikovskii

Nesmeyanov Institute of Organoelement Compounds

编辑信件的主要联系方式.
Email: yulia.v.nelyubina@gmail.com
Moscow, Russia

Yu. Nelyubina

Nesmeyanov Institute of Organoelement Compounds

Email: yulia.v.nelyubina@gmail.com
Moscow, Russia

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