Enhanced mobility of the cluster Ru3(CO)12 in the solid state formed in situ by the reaction of CO and Ru3(CO)6(μ-CO)(μ3∶η2∶η3∶η5-C12H8) on silica
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The reaction of Ru3(CO)6(μ-CO)(μ3∶η2 ∶η3∶η5-C12H 8) (physisorbed on SiO2) with CO in the solid state leads to Ru3(CO)12 and acenaphthylene in quantitative yields; the Ru3(CO)12 generated in situ is highly mobile leading to a reduced chemical shielding anisotropy.Keywords:
Acenaphthylene
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Abstract Wittig monoolefination of the quinone (I) yields the derivative (II) which reacts regioselectively with the nitrile oxides (III) by 1,3‐dipolar cycloaddition to afford the title isoxazoles (IV).
Acenaphthylene
Catalytic hydrogenation
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Acenaphthylene-1,2-dione has been utilized in a wide range of reactions as a starting material for the synthesis of hetero- and carbocyclic compounds and complexes. This review provides a short summary of the recent advances in the application of acenaphthylene-1,2-dione in the synthesis of hetero- and carbocyclic systems and bioactive compounds. In addition, the applications of acenaphthylene-1,2-dione in the synthesis of spiro compounds, propellanes, and ligands in catalyst reactions, from 2002 to early 2018, are included. 1 Introduction 2 Synthesis of Spiro Compounds Employing Acenaphthylene-1,2-dione 2.1 Methods for the Construction of Spiro Compounds 2.1.1 By 1,3-Dipolar Cycloaddition of Acenaphthylene-1,2-dione via Azomethine Ylides 2.1.2 By Multicomponent Reactions of Acenaphthylene-1,2-dione with C–H Acidic Compounds 2.1.3 By Reaction of Acenaphthylene-1,2-dione with Zwitterionic Intermediates 2.1.4 By Substitution and Multicomponent Reactions of Acenaphth- ylene-1,2-dione with Different Nucleophiles 3 Synthesis of Propellanes by Employing Acenaphthylene-1,2-dione 3.1 Methods for the Construction of Propellanes Based on Acenaph- thylene-1,2-dione 3.1.1 By Reaction of Acenaphthylene-1,2-dione with Nucleophiles 3.1.2 By Reaction of Acenaphthylene-1,2-dione with Binucleophiles 4 Synthesis of Ligands Employing Acenaphthylene-1,2-dione for Catalyst Reactions 5 Synthesis of Novel Hetero- and Carbocyclic Compounds Employing Acenaphthylene-1,2-dione 5.1 By Reaction of Acenaphthylene-1,2-dione with Nucleophiles 5.2 By Reaction of Acenaphthylene-1,2-dione with Zwitterionic Intermediates 5.3 By Ring Opening and Ring Enlargement 6 Conclusion
Acenaphthylene
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Acenaphthylene
Thermogravimetric analysis
Thermal Stability
Degradation
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The preparation and properties of some members of a new group of heterocycles derived from acenaphthylene (acenaphtho[5,6-de]triazines etc.) are described. Their electronic structure is compared with that of the non-benzenoid aromatic hydrocarbon cyclohept[fg]acenaphthylene (acepleiadylene). An attempt to generate 5,6-dehydroacenaphthylene is recorded.
Acenaphthylene
Peri
Aromatic hydrocarbon
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Acenaphthene and acenaphthylene are polycyclic aromatic hydrocarbons (PAHs) emitted into the atmosphere from a variety of incomplete combustion sources such as diesel exhaust. Both PAHs are present in the gas phase under typical atmospheric conditions and therefore can undergo atmospheric gas-phase reactions with the hydroxyl (OH) radical and for acenaphthylene with ozone. Using a relative rate method, rate constants have been measured at 296 +/- 2 K for the OH radical reactions with acenaphthene and acenaphthylene of (in units of 10(-11) cm3 molecule(-1) s(-1)) 8.0 +/- 0.4 and 12.4 +/- 0.7, respectively, and for the O3 reaction with acenaphthylene of (1.6 +/- 0.1) x 10(-16) cm3 molecule(-1) s(-1). The products of the gas-phase reactions of acenaphthene and acenaphthylene and their fully deuterated analogues have been investigated using in situ atmospheric pressure ionization tandem mass spectrometry (API-MS) and gas chromatography-mass spectrometry (GC-MS). The major products identified from the OH radical-initiated reaction of acenaphthene and acenaphthylene were a 10 carbon ring-opened product and a dialdehyde, respectively. The major product observed from the API-MS analysis of the O3 reaction with acenaphthylene was a secondary ozonide, which was not observed by GC-MS.
Acenaphthene
Acenaphthylene
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Abstract The strong ultraviolet absorption in the wave‐length region 280‐330 mμ shown by copolymers of acenaphthylene with styrene or methyl methacrylate is due to acenaphthylene residues. The spectra of samples of copolymer containing a small percentage of acenaphthylene are different from the spectrum of polyacenaphthylene. As a result of the comparison of the spectra of these copolymers with the spectra of acenaphthene and with the two forms of 1,1′‐biacenaphthyl it is concluded that spectra of the copolymers can be explained as arising from the presence of pairs of acenaphthylene groups. Finally it is shown that the spectra can be used to estimate the acenaphthylene contents of the copolymers.
Acenaphthylene
Acenaphthene
Ultraviolet
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Fundamental studies on hydrogenation of acenaphthene and acenaphthylene were carried out by means of micro hydrogenation-gas chromatography. Identification of the hydrogenation products of the compounds was made by both retention data of the associated gas chromatograms and IR spectra.By this method, the main impurity remaining even in purified acenaphthene by zone melting was proved to be acenaphthylene.This technique is very simple and rapid, and needs extremely small samples (0.10.2mg). Moreover it is generally applicable to structural characterization of the other unsaturated compounds.
Acenaphthene
Acenaphthylene
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Abstract Die direkte Dimerisierung der Acenaphthylene (II) in Äther ergibt die syn‐Kopf‐ Schwanz‐Dimeren (I) als Hauptprodukte.
Acenaphthylene
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Boron/nitrogen-doped acenaphthylenes, a new class of BN-doped cyclopenta-fused polycyclic aromatic hydrocarbons, were synthesized via indole-directed C-H borylation. The reference molecule BN-acenaphthene was also synthesized in a similar manner. Both BN-acenaphthylene and BN-acenaphthene were unequivocally characterized by single-crystal X-ray analysis. The aromaticities of each ring in BN-acenaphthylenes were quantified by experimental and theoretical methods. Moreover, doping the BN unit into acenaphthylene can increase the LUMO level and decrease the HOMO level, resulting in wider HOMO-LUMO energy gaps. Furthermore, regioselective bromination of BN-acenaphthylene (B-Mes) afforded monobrominated BN-acenaphthylene in good yield. Subsequently, cross-coupling of brominated BN-acenaphthylene gave a series of BN-acenaphthylene derivatives. In addition, the photophysical properties of these BN-acenaphthylene derivatives can be fine-tuned by the substituents on the BN-acenaphthylene scaffold.
Acenaphthylene
Acenaphthene
HOMO/LUMO
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In this paper, solid state synthesis of a series of Mo (W) - Cu (Ag) - S cluster compounds at low heating temperatures has been reported. It has been found that the regularity of cluster formation of thiomolybdate (or thiotungstate) with copper (or silver) is closely relevant to the solid state reaction temperatures. The possible mechanism of cluster formation of Mo(W) -Cu(Ag) - S cluster compounds with nuclearity from four to seven has been suggested.
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