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...
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sg-ntu-dr.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 |
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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. |
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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. |
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School of Physical and Mathematical Sciences |
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School of Physical and Mathematical Sciences Foo, Ming Choo. |
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Final Year Project |
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Foo, Ming Choo. |
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Foo, Ming Choo. |
title |
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_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_sort |
synthesis and structure of [(pph2=e)2c=mg]2 (e = s, nsime3) : novel magnesium carbene complexes. |
publishDate |
2009 |
url |
http://hdl.handle.net/10356/19057 |
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1759856952994693120 |