The Radiative Efficiency and Global Warming Potential of HCFC-132b.

Hydro-chloro-fluoro-carbons (HCFCs) are potent greenhouse gases which strongly absorb the infrared (IR) radiation within the 8-12 μm atmospheric windows. Despite international policies schedule their phasing out by 2020 for developed countries and 2030 globally, HCFC-132b (CHClCClF) has been recently detected with significant atmospheric concentration. In this scenario, detailed climate metrics are of paramount importance for understanding the capacity of anthropogenic pollutants to contribute to global warming.

and Vibrational-Rotational Spectroscopic Characterization of the Next-Generation Refrigerant HFO-1123.

Very short-lived substances have recently been proposed as replacements for hydrofluorocarbons (HFCs), in turn being used in place of ozone-depleting substances, in refrigerant applications. In this respect, hydro-fluoro-olefins (HFOs) are attracting particular interest because, due to their reduced global warming potential, they are supposed to be environmentally friendlier. Notwithstanding this feature, they represent a new class of compounds whose spectroscopic properties and reactivity need to be characterized to allow their atmospheric monitoring and to understand their environmental fate.

The Spectroscopic Characterization of Halogenated Pollutants through the Interplay between Theory and Experiment: Application to R1122.

In the last decade, halogenated ethenes have seen an increasing interest for different applications; in particular, in refrigeration, air-conditioning and heat pumping. At the same time, their adverse effects as atmospheric pollutants require environmental monitoring, especially by remote sensing spectroscopic techniques. For this purpose, an accurate characterization of the spectroscopic fingerprint-in particular, those of relevance for rotational-vibrational spectroscopy-of the target molecules is strongly needed.

Scalable Synthesis of Few-Layered 2D Tungsten Diselenide (2H-WSe) Nanosheets Directly Grown on Tungsten (W) Foil Using Ambient-Pressure Chemical Vapor Deposition for Reversible Li-Ion Storage.

We report a facile two-furnace APCVD synthesis of 2H-WSe. A systematic study of the process parameters is performed to show the formation of the phase-pure material. Extensive characterization of the bulk and exfoliated material confirm that 2H-WSe is layered (i.

Molecular synthons for accurate structural determinations: the equilibrium geometry of 1-chloro-1-fluoroethene.

The equilibrium structure for 1-chloro-1-fluoroethene is reported. The structure has been obtained by a least-squares fit procedure using the available experimental ground-state rotational constants of eight isotopologues. Vibrational effects have been removed from the rotational constants using the vibration-rotation interaction constants derived from computed quadratic and cubic force fields obtained with the required quantum chemical calculations carried out by using both coupled cluster and density functional theory.