Acetylene C2H2, absorption

Laser-ablated La atoms were codeposited at 4 K with acetylene in excess Ar. The products La(C2H2), LaCCH2, HLaCCH, and La2(C2H2), were all characterized using IR spectroscopy. DFT calculations gave calculated vibrational frequencies, relative absorption intensities, and isotopic shifts that supported the identification of these molecules from the matrix IR... 

The circulating acetylene gas—C2D2, C2HD, and C2H2—was analyzed by means of an infrared spectrometer, JASCO 402G, for the absorption peaks at 3282, 2584, and 2440 cm i, respectively. The isotopic mixture of hydrogens—H2, HD, and D2—was analyzed by gas chromatography. 

Absorption of C2H2 in aqueous solutiBns of CuCl NH Cl and HCl (desorption of vinyl acetylene... 

The infrared absorptions of the species formed between laser-ablated Pd atoms and acetylene in excess argon were measured and compared with the values obtained by DFT calculations Pd(77 -C2H2) and Pd(77 -C2H2)2 species were produced, the latter favored at high acetylene concentrations. The calculations and the IR absorptions (assigned with... 

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