Platinum complexes with pyrimidine-functionalized N-heterocyclic carbene ligands – Synthesis and solid state structures
The ligands of the two most successful systems described in the literature for the activation and functionalization of methane have been merged and a series of novel pyrimidine functionalized platinum(II)(NHC) complexes with aryl and alkyl substituents [1-(2-Pyrimidyl)-3-( aryl or alkyl)imidazoline-...
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Published in | Journal of organometallic chemistry Vol. 701; pp. 56 - 61 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
15.03.2012
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Subjects | |
Online Access | Get full text |
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Summary: | The ligands of the two most successful systems described in the literature for the activation and functionalization of methane have been merged and a series of novel pyrimidine functionalized platinum(II)(NHC) complexes with aryl and alkyl substituents [1-(2-Pyrimidyl)-3-(
aryl or alkyl)imidazoline-2-ylidene platinum(II) chlorides] was synthesized by transmetalation via the corresponding silver complexes. All compounds have been fully characterized by
1H and
13C-NMR spectroscopy, elemental analysis, and with five X-ray single crystal structures. As for the related palladium(II)complexes in most cases we observed structures of the type [Pt(L)Cl
2], while for the sterically less demanding methyl substituent a complex is formed, where two ligands are coordinated to one metal center [Pt(L)
2Cl]
+.
A series of pyrimidine functionalized platinum(II)(NHC) complexes with aryl- and alkyl substituents is reported, which could be shown to form different complexes depending on the substituent R. While for R = Me a complex of the type [Pt(pym^NHC–R)
2Cl]
+ is observed, R = DIPP, Mes, Cy lead to a [Pt(pym^NHC–R)Cl
2] structure.
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► Pyrimidine functionalized Pt(II)(NHC) complexes with aryl- and alkyl substituents. ► Fusion of the two most successful catalytic systems for the methane activation. ► All complexes had to be synthesized via “the silver route”. ► Five solid state structures are reported. |
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ISSN: | 0022-328X 1872-8561 |
DOI: | 10.1016/j.jorganchem.2011.12.014 |