کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1258825 | 971640 | 2012 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polymerization of ɛ-caprolactone by lanthanide trisborohydrides and crystal structure of [Ce(BH4)2(THF)5][Ce(BH4)4(THF)2]
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Polymerization of ɛ-caprolactone by lanthanide trisborohydrides and crystal structure of [Ce(BH4)2(THF)5][Ce(BH4)4(THF)2] Polymerization of ɛ-caprolactone by lanthanide trisborohydrides and crystal structure of [Ce(BH4)2(THF)5][Ce(BH4)4(THF)2]](/preview/png/1258825.png)
چکیده انگلیسی
Complexes of lanthanide trisborohydrides, formally Ln(BH4)3(THF)n (Ln=La, Ce, Sm, Yb), were synthesized and their catalytic activity for polymerization of ɛ-caprolactone was studied. All the complexes can catalyze this polymerization. It was found that the catalytic activities decreased in the order of La>Ce>Sm>Yb. The crystal structure of cerium trisborohydride was determined for the first time by single crystal X-ray diffraction analysis. It is an ionic pair complex of [Ce(BH4)2(THF)5][Ce(BH4)4(THF)2]. The cationic part involves two η3-BH4 ligands, while the anionic part involves two η3-BH4 groups and two η2-BH4 groups.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Rare Earths - Volume 30, Issue 8, August 2012, Pages 753–756
Journal: Journal of Rare Earths - Volume 30, Issue 8, August 2012, Pages 753–756
نویسندگان
Fugen YUAN, Tingting LI, Li LI, Yuan ZHOU,