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Spin State of Iron(II) Clathrochelate in the Cocrystallization Products with 2-Aminopyridine and 2-Hydroxypyridine.
- Source :
-
Russian Journal of Coordination Chemistry . Dec2022, Vol. 48 Issue 12, p799-807. 9p. - Publication Year :
- 2022
-
Abstract
- The cocrystallization of the earlier described carboxy-containing iron(II) clathrochelate (I) with 2-hydroxypyridine and 2-aminopyridine affords two new crystalline products: the salt and cocrystal of this complex, respectively, formed by the acid–pyridine two-point heterosynthone, which is often met in multicomponent crystals of aromatic acids and ortho-substituted pyridines. The neutral nature of the cocrystallization product with 2-hydroxypyridine violates the rule of pKa, which is fulfilled in the case of 2-aminopyridine, because of the equilibrium shift in the crystalline phase toward the keto form of 2-hydroxypyridine: pyridone-2. According to the X-ray diffraction (XRD) data, complex I in the salt and cocrystal exists in the low-spin state and undergoes no temperature-induced transition in a temperature range of 100–298 K. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10703284
- Volume :
- 48
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Russian Journal of Coordination Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 161061963
- Full Text :
- https://doi.org/10.1134/S1070328422700099