para-Ethynyl aniline as a building block for fully π-conjugated ligands and acetylide complexes: crystal structures of trans-[Pt(PPh 3) 2(CCC 6H 4NH 2) 2] and [(μ-H)Ru 3(CO) 9(μ 3-CCC 6H 4NH 2)]
para-Ethynyl aniline has been prepared, structurally characterised and investigated as a building block towards fully π-conjugated multifunctional ligands and complexes. Palladium–copper catalysed coupling with aryl halides affords a number of new amino-substituted aryl acetylenes, while using [Ni(C...
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| Published in: | Inorganica Chimica Acta Vol. 309; no. 1; pp. 109 - 122 |
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| Main Authors: | , , , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Elsevier B.V
20-11-2000
|
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | para-Ethynyl aniline has been prepared, structurally characterised and investigated as a building block towards fully π-conjugated multifunctional ligands and complexes. Palladium–copper catalysed coupling with aryl halides affords a number of new amino-substituted aryl acetylenes, while using [Ni(CO)
2(PPh
3)
2] as a catalyst, cyclotrimerisation and dimerisation to give an ene-yne were competitive. Reaction of
para-ethynyl aniline with low-valent metal centres affords acetylide complexes
trans-[Pt(PR
3)
2(CCC
6H
4NH
2)
2] (R=Ph, Bu
n
),
cis-[Pt(η
2-dppe)(CCC
6H
4NH
2)
2], all
trans-[Ru(CO)
2(PEt
3)
2(CCC
6H
4NH
2)
2] and [(μ-H)Ru
3(CO)
9(μ
3-CCC
6H
4NH
2)]. The bis(acetylide)
trans-[Pt(PPh
3)
2(CCC
6H
4NH
2)
2] has been used to prepare extended chain complexes with amide, imine, imino-phosphorane and ferrocenyl imine units being generated. Attempts to prepare polymers via reaction with terephthaloyl chloride lead only to the formation of oligomers with an average of four monomer units. |
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| ISSN: | 0020-1693 1873-3255 |
| DOI: | 10.1016/S0020-1693(00)00254-1 |