general formula M(O,O′-anion)3, where the metal is in the +III oxidation state, have been isolated for titanium and niobium. In the case of vanadium, different compounds have been obtained depending on the fulvene and the reaction conditions. In particular, solvated derivatives of vanadium(II) of general formula V(O,O′-anion)2(THF)2 have been prepared in THF whereas V(O,O′-anion)2 complexes have been
Reaction of dimethyl acetylenedicarboxylate with derivatives of malonic acid: pentamethoxycarbonylcyclopentadienide anion, tetramethoxy-carbonylcyclopentadienone, cyanotetramethoxyfulvenolate anion, and related compounds
作者:R. C. Cookson、J. B. Henstock、J. Hudec、B. R. D. Whitear
DOI:10.1039/j39670001986
日期:——
formulation of the adducts of dimethyl malonate with dimethylacetylenedicarboxylate in the presence of pyridine and acetic acid as tautomeric octamethyl cycloheptadienoctacarboxylates [(III) and (IV)] is confirmed. Both tautomers, or the analogues from other esters of malonicacid, are converted by potassium acetate into Diels' potassium pentamethoxycarbonylcyclopentadienide (VIa). Diazomethane methylates
Push-pull molecules bearing a hydrazonocyclopentadiene acceptor moiety: from the synthesis to organic photovoltaic applications
作者:Konstantin P. Trainov、Rinat F. Salikov、Yuriy N. Luponosov、Petr S. Savchenko、Artur L. Mannanov、Sergei A. Ponomarenko、Dmitry N. Platonov、Yury V. Tomilov
DOI:10.1016/j.mencom.2019.05.021
日期:2019.5
class of compounds containing an electron-accepting hydrazonocyclopentadiene moiety, π-conjugated phenylene spacer, and electron-donating triphenylamine moiety have been synthesized. Investigation of their optical, electrochemical and photovoltaic properties revealed a high potential of the hydrazonocyclopentadiene acceptor moiety in the design of donor-acceptor compounds for organic photovoltaics.
[η5-1,2,3,4,5-pentakis(carbomethoxy)cyclopentadienyl]tricarbonylmanganese(I): Synthesis, spectroscopy and reactivity
作者:Clément Arsenault、Peter Bougeard、Brian G. Sayer、Shahin Yeroushalmi、Michael J. McGlinchey
DOI:10.1016/0022-328x(84)80092-3
日期:1984.4
bromopentacarbonylmanganese(I) gives pentakis(carbomethoxy)cyclopentadienyltricarbonylmanganese(I) in good yield. Photochemical substitution of a metal carbonyl group by tributylphosphine, triphenylphosphine and triethylphosphite is reported. Attempts to modify the ester function are described; hydrolysis or amination give mixed products but reduction with lithium aluminum hydride yields ultimately the pen
Hexaethylbenzene complexes of ruthenium and manganese X-ray crystal structures and NMR spectra of [(HEB)<sub>2</sub>Ru<sub>2</sub>(µ-Cl)<sub>3</sub>][C<sub>5</sub>(CO<sub>2</sub>Me)<sub>5</sub>], [(HEB)Ru(H<sub>2</sub>O)<sub>3</sub>][BF<sub>4</sub>]<sub>2</sub>, (HEB)RuCl<sub>2</sub>[P(OMe)<sub>3</sub>], <i>trans</i>-RuCl<sub>2</sub>(PMe<sub>3</sub>)<sub>4</sub>, and (HEB)Mn(CO)<sub>2</sub>Br
作者:Hari K Gupta、Philippa E Lock、Nada Reginato、James F Britten、Michael J McGlinchey
DOI:10.1139/v06-005
日期:2006.2.1
presence of [(HEB)2Ru2(µ-Cl)3]Cl in solution. In [(HEB)2Ru2(µ-Cl)3][C5(CO2Me)5] (7), the cation has D3h symmetry with alternating proximal and distal ethyl groups. Bridge cleavage of 6 with trimethylphosphite or with trimethylphosphine gives (HEB)RuCl2[P(OMe)3] (9) or (HEB)RuCl2(PMe3) (10), respectively. The latter reaction also yields RuCl2(Me3P)4 (11), whose structure represents a relatively rare example