Synthesis and Structure of [(PPh2=E)2C=Mg]2 (E = S, NSiMe3) : novel magnesium carbene complexes.
Novel magnesium bis(diphenylphosphorano)methaniide complexes have been synthesized and characterized. Reaction of [Ph2PCH2PPh2] with sulphur afforded the ligand [CH2(PPh2=S)2] (1). Treatment of 1 with Mg(nBu)2 gave the first example of magnesium bis(diphenylthiophosphorano)methaniide complex [(PPh2...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2009
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/10356/19057 |
| _version_ | 1811694488363466752 |
|---|---|
| author | Foo, Ming Choo. |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Foo, Ming Choo. |
| author_sort | Foo, Ming Choo. |
| collection | NTU |
| description | Novel magnesium bis(diphenylphosphorano)methaniide complexes have been
synthesized and characterized. Reaction of [Ph2PCH2PPh2] with sulphur afforded the ligand [CH2(PPh2=S)2] (1). Treatment of 1 with Mg(nBu)2 gave the first example of magnesium bis(diphenylthiophosphorano)methaniide complex [(PPh2=S)2C=Mg]2 (2). Reaction of [Ph2PCH2PPh2] with azidotrimethylsilane afforded the ligand [CH2(PPh2=NSiMe3)2] (3). Treatment of 3 with Mg(nBu)2 gave novel [(PPh2=NSiMe3)2C=Mg]2 (4). X-ray structure analyses of 2 and 4 confirmed that the two magnesium carbene moieties [(PPh2=S)2C=Mg] in
2 dimerized in a head-to-head manner while the two magnesium carbene moieties
[(PPh2=NSiMe3)2C=Mg] in 4 dimerized in a head-to-tail manner. The synthesis of 2 and 4 are highly significant as they demonstrate the existence of C=Mg double bond. |
| first_indexed | 2024-10-01T07:08:22Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/19057 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:08:22Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | ntu-10356/190572023-02-28T23:17:08Z Synthesis and Structure of [(PPh2=E)2C=Mg]2 (E = S, NSiMe3) : novel magnesium carbene complexes. Foo, Ming Choo. School of Physical and Mathematical Sciences So Cheuk Wai DRNTU::Science::Chemistry::Organic chemistry::Organometallic compounds Novel magnesium bis(diphenylphosphorano)methaniide complexes have been synthesized and characterized. Reaction of [Ph2PCH2PPh2] with sulphur afforded the ligand [CH2(PPh2=S)2] (1). Treatment of 1 with Mg(nBu)2 gave the first example of magnesium bis(diphenylthiophosphorano)methaniide complex [(PPh2=S)2C=Mg]2 (2). Reaction of [Ph2PCH2PPh2] with azidotrimethylsilane afforded the ligand [CH2(PPh2=NSiMe3)2] (3). Treatment of 3 with Mg(nBu)2 gave novel [(PPh2=NSiMe3)2C=Mg]2 (4). X-ray structure analyses of 2 and 4 confirmed that the two magnesium carbene moieties [(PPh2=S)2C=Mg] in 2 dimerized in a head-to-head manner while the two magnesium carbene moieties [(PPh2=NSiMe3)2C=Mg] in 4 dimerized in a head-to-tail manner. The synthesis of 2 and 4 are highly significant as they demonstrate the existence of C=Mg double bond. Bachelor of Science in Chemistry and Biological Chemistry 2009-09-16T02:49:16Z 2009-09-16T02:49:16Z 2009 2009 Final Year Project (FYP) http://hdl.handle.net/10356/19057 en 41 p. application/pdf |
| spellingShingle | DRNTU::Science::Chemistry::Organic chemistry::Organometallic compounds Foo, Ming Choo. Synthesis and Structure of [(PPh2=E)2C=Mg]2 (E = S, NSiMe3) : novel magnesium carbene complexes. |
| title | Synthesis and Structure of [(PPh2=E)2C=Mg]2 (E = S, NSiMe3) : novel magnesium carbene complexes. |
| title_full | Synthesis and Structure of [(PPh2=E)2C=Mg]2 (E = S, NSiMe3) : novel magnesium carbene complexes. |
| title_fullStr | Synthesis and Structure of [(PPh2=E)2C=Mg]2 (E = S, NSiMe3) : novel magnesium carbene complexes. |
| title_full_unstemmed | Synthesis and Structure of [(PPh2=E)2C=Mg]2 (E = S, NSiMe3) : novel magnesium carbene complexes. |
| title_short | Synthesis and Structure of [(PPh2=E)2C=Mg]2 (E = S, NSiMe3) : novel magnesium carbene complexes. |
| title_sort | synthesis and structure of pph2 e 2c mg 2 e s nsime3 novel magnesium carbene complexes |
| topic | DRNTU::Science::Chemistry::Organic chemistry::Organometallic compounds |
| url | http://hdl.handle.net/10356/19057 |
| work_keys_str_mv | AT foomingchoo synthesisandstructureofpph2e2cmg2esnsime3novelmagnesiumcarbenecomplexes |