کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1303194 1498923 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Titanium complexes based on pyridine containing dialcohols: Effect of a ligand
ترجمه فارسی عنوان
مجتمع های تیتانیوم مبتنی بر دی آلکالین های حاوی پیریدین: اثر لیگاند
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
چکیده انگلیسی


• O,N,N,O-type ligand, 2,2′-bipy-6,6′-(CH2Ph2OH)2, gives titanyl complex.
• Rare example of Ti complex with TiO bond is obtained.
• Titanium complexes based on substituted 2,6-bis(hydroxyalkyl)pyridines are obtained.
• Titanium complexes are active initiators of ROP of lactones.

Substituted 2,6-bis(hydroxyalkyl)pyridines, H2L, 1–3 (2,6-Py(CH2(X)OH)(CH2(Y)OH), X = Y = cyclo-C6H10, 1; X = Y = 1-Ad, 2; X = CPh2, Y = CH2CPh2, 3), were used as ligands for the synthesis of titanium(IV) complexes, (i-PrO)2Ti(L), 1a–3a. On the contrary, application of related dialcohol based on 2,2′-bipyridine, H2L′, 5 (2,2′-bipy-6,6′-(CH2Ph2OH)2), resulted in titanyl complex, (L′)TiO, 6. The molecular structure of 6 was investigated by X-ray analysis. Compounds 1a and 3a were tested as initiators in ring-opening polymerization of l-lactide and ε-caprolactone showing moderate activity.

The structure of the ligand determines the nature of the titanium complex formed. Substituted 2,6-bis(hydroxyalkyl)pyridines give typical complexes. On contrary, (2,2′-bipy-6,6′-(CH2Ph2OH)2) results in complex with TiO bond.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganic Chemistry Communications - Volume 67, May 2016, Pages 1–5
نویسندگان
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