scholarly journals Distortions of ethyne when complexed with a cuprous or argentous halide: the rotational spectrum of C2H2⋯CuF

2015 ◽  
Vol 17 (29) ◽  
pp. 19230-19237 ◽  
Author(s):  
Daniel P. Zaleski ◽  
Susanna L. Stephens ◽  
David P. Tew ◽  
Dror M. Bittner ◽  
Nicholas R. Walker ◽  
...  
Keyword(s):  
Gas Phase ◽  
Sulfur Hexafluoride ◽  
Metallic Copper ◽  
Rotational Spectrum ◽  
Dilute Mixture

A new molecule C2H2⋯CuF has been synthesized in the gas phase by means of the reaction of laser-ablated metallic copper with a pulse of gas consisting of a dilute mixture of ethyne and sulfur hexafluoride in argon.

Spectroscopic investigations of hydrogen bonding interactions in the gas phase. II. The determination of the geometry and potential constants of the hydrogen-bonded heterodimer CH 3 CN • • • HF from its microwave rotational spectrum

1980 ◽  
Vol 370 (1741) ◽  
pp. 239-255 ◽  
Keyword(s):  
Hydrogen Bonding ◽  
Gas Phase ◽  
Spectroscopic Constants ◽  
Rotational Spectrum ◽  
Hydrogen Bonding Interactions ◽  
Isotopic Species ◽  
Microwave Rotational Spectrum ◽  
Vibration Rotation ◽  
Hydrogen Bonded

The microwave rotational spectrum of the hydrogen-bonded heterodimer CH 3 CN • • • HF has been identified and shown to be characteristic of a symmetric top. A detailed analysis of several rotational transitions for a variety of isotopic species gives the spectroscopic constants summarized in the following table: Rotational constants/MHz, vibration-rotation constants/MHz and vibrational separations/cm -1 of CH 3 CN • • • HF

Spectroscopic investigations of hydrogen bonding interactions in the gas phase. VIII. Microwave rotational spectrum of the heterodimer H—C≡C—C≡N ∙ ∙ ∙ HF

1984 ◽  
Vol 394 (1807) ◽  
pp. 387-403 ◽  
Keyword(s):  
Gas Phase ◽  
Continuous Wave ◽  
Spectroscopic Constants ◽  
State Transitions ◽  
Rotational Spectrum ◽  
Microwave Spectra ◽  
Hydrogen Bonding Interactions ◽  
Microwave Rotational Spectrum ◽  
Microwave Techniques ◽  
Pulsed Nozzle

The hydrogen bonded dimer formed between cyanoacetylene and hydrogen fluoride has been identified through its infrared and microwave spectra. Two microwave techniques, continuous wave and pulsed-nozzle Fourier-transform spectroscopy, have been combined to identify unambiguously the vibrational ground state transitions and to assign vibrational satellites. In making the assignments, much use has been made of computer simu­lation of spectra, which is described in an Appendix. Analysis of the microwave spectra led to the following spectroscopic constants and molecular parameters. HC 3 N ∙ ∙ ∙HF HC 3 N∙ ∙ ∙DF B 0 /MHz 1220.68431 (9) 1204.9051 (2) D J /kHz 0.306 (2) 0.296 (3) α β /MHz ─7.20 (2) — γ β /MHz 0.094 (3) — γ 11 /MHz ─0.030 (2) — α σ /MHz ─13.7 (2) — q β /MHz 3.12 (2) — r 0 (N ∙ ∙ ∙ F)/nm 0.2788 0.2785 X /MHz ─ 3.876 ─ 3.854 v β /cm -1 30 — v σ /cm -1 139 — k σ /(N m -1 ) 16.3 — k s /(N m -1 ) 770 — Finally, the variation of ∆ v̄ as a function of r 0 (N ∙ ∙ ∙ F) has been examined for a series of dimers RCN ∙ ∙ ∙ HF.

Gas-Phase Chemistry of the Sulfur Hexafluoride Fragment Ions SFn+(n= 0−5) and SFn2+(n= 2, 4). Ab Initio Thermochemistry of Novel Reactions of S+•and SF+

1998 ◽  
Vol 102 (27) ◽  
pp. 5189-5195 ◽  
Author(s):  
Regina Sparrapan ◽  
Maria Anita Mendes ◽  
Isabel P. P. Ferreira ◽  
Marcos N. Eberlin ◽  
Cristiano Santos ◽  
...  
Keyword(s):  
Ab Initio ◽  
Gas Phase ◽  
Sulfur Hexafluoride ◽  
Gas Phase Chemistry ◽  
Fragment Ions ◽  
Phase Chemistry

Spectroscopic investigations of hydrogen bonding interactions in the gas phase. IX. Vibrational satellites in the rotational spectrum of the hydrogen-bonded homodimer HCN • • • HCN

1985 ◽  
Vol 399 (1817) ◽  
pp. 377-390 ◽  
Keyword(s):  
Gas Phase ◽  
Ground State ◽  
Hydrogen Cyanide ◽  
Spectroscopic Constants ◽  
Rotational Spectrum ◽  
Optimum Conditions ◽  
Frequency Range ◽  
Hydrogen Bonding Interactions ◽  
Microwave Spectrometer ◽  
Simulation Of Spectra

The rotational spectrum of the hydrogen cyanide dimer has been observed in the frequency range 26-40 GHz by using a Stark-modulated microwave spectrometer. Although the spectrum is very weak, even under optimum conditions, it has been possible to assign vibrational satellites in the v β progression based on the ground state and in the v β progression based on v σ ═ 1 with the aid of the computer simulation of spectra and the ground-state spectroscopic constants. The spectroscopic constants now available for the hydrogen cyanide dimerare summarized as follows: (HC 14 N) 2 (DC 14 N) 2 (HC 15 N) 2 v β ═ 1 ← 0/cm -1 35±5 30±5 35±5 v σ ═ 1 ← 0/cm -1 101 ─ ─ B o /MHz 1745.80973(50) 1661.18(26) 1684.28825(25) D J /kHz 2.133(30) (1.873) 1.900(30) r c. m ./nm 44.496 ─ 44.499 K σ /(Nm -1 ) 8.14 ─ 8.51 α β /MHz ─20.07 (2) ─17.73 (27) ─18.74 (9) γ β /MHz 0.266 (4) 0.242 (36) 0.250 (17) q β /MHz 5.33 (4) 5.44 (13) 5.15 (10) α σ /MHz (31.44) ─ ─

Rotational spectrum of the gas-phase dimer OC⋯BrCl

1994 ◽  
Vol 90 (10) ◽  
pp. 1365-1371 ◽  
Author(s):  
Susana Blanco ◽  
A. C. Legon ◽  
Joanna C. Thorn
Keyword(s):  
Gas Phase ◽  
Rotational Spectrum

scholarly journals Comparative Toxicity of CuZn Nanoparticles with Different Physical and Chemical Characteristics

2019 ◽  
Vol 35 (3) ◽  
pp. 973-981
Author(s):  
Sergey Miroshnikov ◽  
Elena Sizova ◽  
Elena Yausheva ◽  
Michael Uimin ◽  
Alexander Konev ◽  
...  
Keyword(s):  
Phase Composition ◽  
Specific Surface ◽  
Gas Phase ◽  
Metallic Copper ◽  
Zinc Alloy ◽  
Controlled Synthesis ◽  
Alloy Nanoparticles ◽  
Phase Synthesis ◽  
Physical And Chemical ◽  
Test Cultures

In the experiment, the biological activity of copper and zinc alloy nanoparticles prepared by gas phase synthesis in an argon atmosphere was assessed. Nanoparticle preparations differed in phase composition and specific surface for CuZnNPs1 - 36 m2/g, CuZnNPs2 - 22 and CuZnNPs3 NP - 15 m2/g. As the test cultures, E.coli K12 TG1 pF1, E.coli K12 MG1655 katG::lux, E.coli MG1655 pRecA-lux, E.coli K12 MG1655 psoxS::lux were used. As the results showed, phase composition and specific surface area of nanoparticles were their toxicity factors. CuZnNPs3 is the most toxic among the studied samples, the percentage of zinc phase in it, in comparison with other tested powders, is the largest (52.3%), and the percentage of metallic copper is the smallest (7.9%). Within further works is to carry out controlled synthesis that will allow changing the toxicity of the nanoparticles under study by phase composition and specific surface.

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