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Synthesis and characterization of a singlet delocalized 2,4-diimino-1,3-disilacyclobutanediyl and a silylenylsilaimine

หน่วยงาน Nanyang Technological University, Singapore

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ชื่อเรื่อง : Synthesis and characterization of a singlet delocalized 2,4-diimino-1,3-disilacyclobutanediyl and a silylenylsilaimine
นักวิจัย : Zhang, Shu-Hua , Xi, Hong Wei , Lim, Kok Hwa , Meng, Qingyong , Huang, Ming-Bao , So, Cheuk-Wai
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Zhang, S. H., Xi, H. W., Lim, K. H., Meng, Q., Huang, M. B.,& So, C. W. (2012). Synthesis and Characterization of a Singlet Delocalized 2,4-Diimino-1,3-disilacyclobutanediyl and a Silylenylsilaimine. Chemistry - A European Journal, 18(14), 4258-4263. , 0947-6539 , http://hdl.handle.net/10220/12995 , http://dx.doi.org/10.1002/chem.201103351
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Chemistry - a European journal
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

The synthesis and characterization of a singlet delocalized 2,4-diimino-1,3-disilacyclobutanediyl, [LSi(μ-CNAr)2SiL] (2, L: PhC(NtBu)2, Ar: 2,6-iPr2C6H3), and a silylenylsilaimine, [LSi([DOUBLE BOND]NAr)[BOND]SiL] (3), are described. The reaction of three equivalents of the disilylene [LSi[BOND]SiL] (1) with two equivalents of ArN[DOUBLE BOND]C[DOUBLE BOND]NAr in toluene at room temperature for 12 h afforded [LSi(μ-CNAr)2SiL] (2) and [LSi([DOUBLE BOND]NAr)[BOND]SiL] (3) in a ratio of 1:2. Compounds 2 and 3 have been characterized by NMR spectroscopy and X-ray crystallography. Compound 2 was also investigated by theoretical studies. The results show that compound 2 possesses singlet biradicaloid character with an extensive electronic delocalization throughout the Si2C2 four-membered ring and exocyclic C[DOUBLE BOND]N bonds. Compound 3 is the first example of a silylenylsilaimine, which contains a low-valent silicon center and a silaimine substituent. A mechanism for the formation of 2 and 3 is also proposed.

บรรณานุกรม :
Zhang, Shu-Hua , Xi, Hong Wei , Lim, Kok Hwa , Meng, Qingyong , Huang, Ming-Bao , So, Cheuk-Wai . (2555). Synthesis and characterization of a singlet delocalized 2,4-diimino-1,3-disilacyclobutanediyl and a silylenylsilaimine.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Zhang, Shu-Hua , Xi, Hong Wei , Lim, Kok Hwa , Meng, Qingyong , Huang, Ming-Bao , So, Cheuk-Wai . 2555. "Synthesis and characterization of a singlet delocalized 2,4-diimino-1,3-disilacyclobutanediyl and a silylenylsilaimine".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Zhang, Shu-Hua , Xi, Hong Wei , Lim, Kok Hwa , Meng, Qingyong , Huang, Ming-Bao , So, Cheuk-Wai . "Synthesis and characterization of a singlet delocalized 2,4-diimino-1,3-disilacyclobutanediyl and a silylenylsilaimine."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Zhang, Shu-Hua , Xi, Hong Wei , Lim, Kok Hwa , Meng, Qingyong , Huang, Ming-Bao , So, Cheuk-Wai . Synthesis and characterization of a singlet delocalized 2,4-diimino-1,3-disilacyclobutanediyl and a silylenylsilaimine. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.