scispace - formally typeset
Search or ask a question
Journal ArticleDOI

Polymerization of thiophene containing cyclobutadiene Co cyclopentadiene complexes

01 Jun 2006-Synthetic Metals (Elsevier)-Vol. 156, Iss: 11, pp 784-791
TL;DR: In this article, a series of cyclobutadiene cobalt cyclopentadiene (CbCoCp) complexes containing electrochemically polymerizable thiophene units were synthesized.
About: This article is published in Synthetic Metals.The article was published on 2006-06-01. It has received 11 citations till now. The article focuses on the topics: Cyclobutadiene & Thiophene.
Citations
More filters
Journal ArticleDOI
TL;DR: In this article, the evolution of organotransition metal electrochemistry from its origin with ferrocene to its promise in future applications is presented, where key findings on the relationships of electron transfer to molecular structures and to the reactions of OMT metal complexes are given.

205 citations

Journal ArticleDOI
TL;DR: Recent developments in the field of synthesis and potential applications of metal-functionalized polymers obtained via electropolymerization are presented, highlighting the significant advances in this field of research.
Abstract: Electropolymerization represents a suitable and well-established approach for the assembly of polymer structures, in particular with regard to the formation of thin, insoluble films. Utilization of monomers that are functionalized with metal complex units allows the combination of structural and functional benefits of polymers and metal moieties. Since a broad range of both electropolymerizable monomers and metal complexes are available, various structures and, thus, applications are possible. Recent developments in the field of synthesis and potential applications of metal-functionalized polymers obtained via electropolymerization are presented, highlighting the significant advances in this field of research.

110 citations

Journal ArticleDOI
TL;DR: Acrylate derivatives of these compounds were found to polymerize giving rise to the first example of polymers containing neutral, 18 e cobaltoarenocenes in the side chain.

36 citations

Journal ArticleDOI
TL;DR: In this paper, the authors employed both as an analytical instrumental technique and as a method of inducing changes in the structure and reactivity of organometallic complexes, which is the primary implemen...

34 citations

References
More filters
Journal ArticleDOI
TL;DR: The oxidative electron transfer properties of superphane complexes consisting of cyclopentadienylcobalt cyclobutadiene moieties linked by either three or five bridging methylene groups have been studied by experimental and theoretical methods as discussed by the authors.
Abstract: The oxidative electron-transfer properties of several superphane complexes consisting of cyclopentadienylcobalt cyclobutadiene moieties linked by either three (compounds 1 and 4) or five (compounds 2 and 5) bridging methylene groups have been studied by experimental and theoretical methods In both cases two separate one-electron oxidations are found The mixed-valent monocations of the (−CH2−)5-bridged complexes are valence-trapped with very weak interactions between metal centers The (−CH2−)3 complexes, however, have strong interactions between the two molecular halves The intervalence transfer (IT) band of 1+ has characteristics of both class II (localized) and class III (delocalized) behavior, but the IR spectra of carboxy-labeled 4+ clearly establish trapped valence for the monocations of the propano-bridged systems Photoelectron spectra and ab initio calculations at the UHF level show that, in the ground electronic state, 1+ has a half-filled orbital (ie, electron spin) that is essentially loca

54 citations

Journal ArticleDOI
TL;DR: The organometallic polymers were fully characterized and show nematic, lyotropic liquid crystalline phases as well as chiroptical properties from which aggregation in poor solvents and in the solid state can be concluded.
Abstract: Organometallic polymers were prepared by acyclic diyne meta- thesis (ADIMET) or by Pd-catalyzed coupling of 1,3-diethynylcyclobutadi- ene(cyclopentadienyl)cobalt with a suit- ably substituted diiodobenzene. The polymers obtained by Heck coupling show a degree of polymerization (Pn )o f 20 - 60. The monomers for ADIMET were made by the Pd-catalyzed coupling of (1,3-bis(trimethylsilylethynyl)-2,4- bis(trimethylsilyl)cyclobutadiene)(cy- clopentadienyl)cobalt to 1-bromo-2,5- dialkyl-4-propynylbenzenes in the pres- ence of KOH in yields of 40 - 48 %. The monomers carry hexyl, ethylhexyl, and (S)-3,7-dimethyloctyl side chains. Poly- merization of the propynylated mono- mers furnishes organometallic polymers with a Pn of up to 230 arylene-ethynyl- ene units. The polymers were fully characterized by polarizing microscopy, transmission electron microscopy, circu- lar dichroism, differential scanning cal- orimetry, and X-ray diffraction (XRD). They show nematic, lyotropic liquid crystalline phases as well as chiroptical properties from which aggregation in poor solvents and in the solid state can be concluded. Lamellar or irregular honeycomb-shaped morphologies in these organometallic polymers can be detected by electron microscopy.

50 citations

Journal ArticleDOI
TL;DR: In this paper, cyclic voltammetry and polarography were used to investigate the oxidation of cobalt sandwich complexes with cyclic diolefine and cyclobutadiene ligands.

43 citations

Related Papers (5)