253449-59-1Relevant academic research and scientific papers
Synthesis, structure, electronic properties and thermal behavior of butadiynyl substituted phenylCr(CO)3-complexes
Müller, Thomas J.J.,Blümel, Janet
, p. 354 - 367 (2007/10/03)
Butadiynyl-substituted η6-benzeneCr(CO)3 complexes 3 are very efficiently prepared by a copper catalyzed coupling of the phenylacetylene complex 1 and bromo alkynes 2. The transmission of electronic effects through the butadiynyl bridge operates by resonance mechanisms as established by correlations between Hammett's σp, σR and σ P+ parameters. Most interestingly, however, is an unusual thermal behavior that leads to intractable paramagnetic polymers of unknown structure. According to thermal analyses (thermal gravimetrical analysis, differential scanning calorimetry) the complexes 3 react in a thermal solid-state reaction under CO extrusion to give amorphous cross-linked polymers.
Syntheses and NLO Properties of Chromium Carbonyl Arene Complexes with Conjugated Side Chains: The Amphoteric Nature of Chromium Carbonyl Complexation in Push-Pull Chromophores
Müller, Thomas J. J.,Netz, Astrid,Ansorge, Markus,Schm?lzlin, Elmar,Br?uchle, Christoph,Meerholz, Klaus
, p. 5066 - 5074 (2008/10/08)
Donor- and acceptor-substituted alkynylated chromium carbonyl arene complexes Cr(CO)2L-(η6-R1-C6H 4)(C≡C)nR2 (1, n = 1, L = CO, PPh3, R1 = H, o-formyl, Rsu
