Synthesis and characterization of a singlet delocalized 2,4-diimino-1,3-disilacyclobutanediyl and a silylenylsilaimine
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]...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2013
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| Online Access: | https://hdl.handle.net/10356/99505 http://hdl.handle.net/10220/12995 |
| _version_ | 1811676627082412032 |
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| author | Zhang, Shu-Hua Xi, Hong Wei Lim, Kok Hwa Meng, Qingyong Huang, Ming-Bao So, Cheuk-Wai |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Zhang, Shu-Hua Xi, Hong Wei Lim, Kok Hwa Meng, Qingyong Huang, Ming-Bao So, Cheuk-Wai |
| author_sort | Zhang, Shu-Hua |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T02:24:28Z |
| format | Journal Article |
| id | ntu-10356/99505 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:24:28Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/995052020-03-07T12:34:46Z Synthesis and characterization of a singlet delocalized 2,4-diimino-1,3-disilacyclobutanediyl and a silylenylsilaimine Zhang, Shu-Hua Xi, Hong Wei Lim, Kok Hwa Meng, Qingyong Huang, Ming-Bao So, Cheuk-Wai School of Physical and Mathematical Sciences 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. 2013-08-05T04:24:09Z 2019-12-06T20:08:11Z 2013-08-05T04:24:09Z 2019-12-06T20:08:11Z 2012 2012 Journal Article 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 https://hdl.handle.net/10356/99505 http://hdl.handle.net/10220/12995 10.1002/chem.201103351 en Chemistry - a European journal |
| spellingShingle | 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 |
| title | Synthesis and characterization of a singlet delocalized 2,4-diimino-1,3-disilacyclobutanediyl and a silylenylsilaimine |
| title_full | Synthesis and characterization of a singlet delocalized 2,4-diimino-1,3-disilacyclobutanediyl and a silylenylsilaimine |
| title_fullStr | Synthesis and characterization of a singlet delocalized 2,4-diimino-1,3-disilacyclobutanediyl and a silylenylsilaimine |
| title_full_unstemmed | Synthesis and characterization of a singlet delocalized 2,4-diimino-1,3-disilacyclobutanediyl and a silylenylsilaimine |
| title_short | Synthesis and characterization of a singlet delocalized 2,4-diimino-1,3-disilacyclobutanediyl and a silylenylsilaimine |
| title_sort | synthesis and characterization of a singlet delocalized 2 4 diimino 1 3 disilacyclobutanediyl and a silylenylsilaimine |
| url | https://hdl.handle.net/10356/99505 http://hdl.handle.net/10220/12995 |
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