Polymorphism in metal complexes of thiazole-4-carboxylic acid
© 2016, The Author(s). Five new molecular complexes of chemical formula [M(4-tza) 2 (H 2 O) 2 ] (M = Co, Ni, or Cu) and a complex of [Cu(4-tza) 2 ]·4H 2 O using thiazole-4-carboxylic acid (4-tza) as the ligand have been successfully synthesized and structurally characterized by single crystal X-ray...
محفوظ في:
| المؤلفون الرئيسيون: | , , |
|---|---|
| التنسيق: | دورية |
| منشور في: |
2017
|
| الوصول للمادة أونلاين: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84979656159&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/41471 |
| الوسوم: |
إضافة وسم
لا توجد وسوم, كن أول من يضع وسما على هذه التسجيلة!
|
| الملخص: | © 2016, The Author(s). Five new molecular complexes of chemical formula [M(4-tza) 2 (H 2 O) 2 ] (M = Co, Ni, or Cu) and a complex of [Cu(4-tza) 2 ]·4H 2 O using thiazole-4-carboxylic acid (4-tza) as the ligand have been successfully synthesized and structurally characterized by single crystal X-ray diffraction. Two district polymorphs (α and β) are found for both [Co(4-tza) 2 (H 2 O) 2 ] and [Ni(4-tza) 2 (H 2 O) 2 ]. The effects of solvent composition and temperature on the formation of these polymorphs have been investigated and phase behaviour of the polymorphs was studied through X-ray powder diffraction. Unlike the complexes of Co and Ni, [Cu(4-tza) 2 (H 2 O) 2 ] does not display polymorphism but exhibits irreversible structural transformation from [Cu(4-tza) 2 (H 2 O) 2 ] to the dehydrated form, [Cu(4-tza) 2 ], upon heating. |
|---|