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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | So, Cheuk-wai Xi, Hong-wei Yeong, Hui-xian Lim, Kok Hwa Zhang, Shu-hua |
| Description | Author Affiliation: Zhang SH ( Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore.) |
| Abstract | The synthesis and characterization of novel monomeric silylsilylenes $[\{PhC(NtBu)_{2}\}SiSi\{(NtBu)_{2}C(H)Ph\}R]$ (R=Cl (2), H (4)) are described. Compound 2 was prepared by the treatment of $[\{PhC(NtBu)_{2}\}SiHCl_{2}]$ (1) with two equivalents of potassium graphite, whereas compound 4 was synthesized by the treatment of 1 with four equivalents of potassium graphite. The results suggest that silicon(II) hydride intermediate $[\{PhC(NtBu)_{2}\}SiH]$ was formed in the reduction, which underwent a hydrosilylation with the amidinate ligand of $[\{PhC(NtBu)_{2}\}SiR]$ (R=Cl or H) to form 2 and 4, respectively. The existence of $[\{PhC(NtBu)_{2}\}SiH]$ in solution was demonstrated by the treatment of $[\{PhC(NtBu)_{2}\}SiCl]$ (3) with $[K\{HB(iBu)_{3}\}].$ Compounds 2 and 4 have been characterized by X-ray crystallography and NMR spectroscopy. The results show that compounds 2 and 4 are stable in solution or the solid state, and do not dimerize to form the corresponding disilene. DFT calculations show that the SiSi bonds in 2 and 4 do not have multiple-bond character. |
| ISSN | 09476539 |
| e-ISSN | 15213765 |
| Journal | Chemistry - A European Journal |
| Issue Number | 33 |
| Volume Number | 16 |
| Language | English |
| Publisher | Wiley-VCH;ChemPubSoc Europe |
| Publisher Date | 2010-09-03 |
| Publisher Place | Germany |
| Access Restriction | Open |
| Subject Keyword | Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Catalysis |
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