The Experts below are selected from a list of 30 Experts worldwide ranked by ideXlab platform
Detlev Sülzle - One of the best experts on this subject based on the ideXlab platform.
-
Vibrational spectra of seven halomethanes
The Analyst, 1992Co-Authors: Valdas Sablinskas, Peter Klaeboe, Claus J. Nielsen, Detlev SülzleAbstract:Seven halogenated methanes CX2YZ(with X, Y and Z being H, F, Cl, Br or I), all with a plane of symmetry, were synthesized and studied by infrared (IR) and Raman techniques. They belong to Point Group Cs and have six fundamentals of species a′ and three of species a″. Some of these molecules were investigated 30–40 years ago, but very little spectroscopic work has been carried out since. The IR spectra were recorded in the region from 3100 to 100 cm–1 in the vapour, liquid and crystalline states. Raman spectra, including semi-quantitative polarization measurements on the liquids, were obtained, additional vapour spectra were recorded, and the liquid spectra were also given in the R(ω) representation. Accurate Raman spectra were recorded of the crystalline phases at temperatures above 78 K, and the external modes in the range 200–10 cm–1 were investigated as probes for the phase transitions. The fundamentals of chloroiodomethane have been listed and two crystalline phases were observed for this compound, while only one crystal phase was observed for the other molecules. No plastic phases were detected in any of the compounds. Preliminary results of these investigations are presented.
Valdas Sablinskas - One of the best experts on this subject based on the ideXlab platform.
-
Vibrational spectra of seven halomethanes
The Analyst, 1992Co-Authors: Valdas Sablinskas, Peter Klaeboe, Claus J. Nielsen, Detlev SülzleAbstract:Seven halogenated methanes CX2YZ(with X, Y and Z being H, F, Cl, Br or I), all with a plane of symmetry, were synthesized and studied by infrared (IR) and Raman techniques. They belong to Point Group Cs and have six fundamentals of species a′ and three of species a″. Some of these molecules were investigated 30–40 years ago, but very little spectroscopic work has been carried out since. The IR spectra were recorded in the region from 3100 to 100 cm–1 in the vapour, liquid and crystalline states. Raman spectra, including semi-quantitative polarization measurements on the liquids, were obtained, additional vapour spectra were recorded, and the liquid spectra were also given in the R(ω) representation. Accurate Raman spectra were recorded of the crystalline phases at temperatures above 78 K, and the external modes in the range 200–10 cm–1 were investigated as probes for the phase transitions. The fundamentals of chloroiodomethane have been listed and two crystalline phases were observed for this compound, while only one crystal phase was observed for the other molecules. No plastic phases were detected in any of the compounds. Preliminary results of these investigations are presented.
Claus J. Nielsen - One of the best experts on this subject based on the ideXlab platform.
-
Vibrational spectra of seven halomethanes
The Analyst, 1992Co-Authors: Valdas Sablinskas, Peter Klaeboe, Claus J. Nielsen, Detlev SülzleAbstract:Seven halogenated methanes CX2YZ(with X, Y and Z being H, F, Cl, Br or I), all with a plane of symmetry, were synthesized and studied by infrared (IR) and Raman techniques. They belong to Point Group Cs and have six fundamentals of species a′ and three of species a″. Some of these molecules were investigated 30–40 years ago, but very little spectroscopic work has been carried out since. The IR spectra were recorded in the region from 3100 to 100 cm–1 in the vapour, liquid and crystalline states. Raman spectra, including semi-quantitative polarization measurements on the liquids, were obtained, additional vapour spectra were recorded, and the liquid spectra were also given in the R(ω) representation. Accurate Raman spectra were recorded of the crystalline phases at temperatures above 78 K, and the external modes in the range 200–10 cm–1 were investigated as probes for the phase transitions. The fundamentals of chloroiodomethane have been listed and two crystalline phases were observed for this compound, while only one crystal phase was observed for the other molecules. No plastic phases were detected in any of the compounds. Preliminary results of these investigations are presented.
Peter Klaeboe - One of the best experts on this subject based on the ideXlab platform.
-
Vibrational spectra of seven halomethanes
The Analyst, 1992Co-Authors: Valdas Sablinskas, Peter Klaeboe, Claus J. Nielsen, Detlev SülzleAbstract:Seven halogenated methanes CX2YZ(with X, Y and Z being H, F, Cl, Br or I), all with a plane of symmetry, were synthesized and studied by infrared (IR) and Raman techniques. They belong to Point Group Cs and have six fundamentals of species a′ and three of species a″. Some of these molecules were investigated 30–40 years ago, but very little spectroscopic work has been carried out since. The IR spectra were recorded in the region from 3100 to 100 cm–1 in the vapour, liquid and crystalline states. Raman spectra, including semi-quantitative polarization measurements on the liquids, were obtained, additional vapour spectra were recorded, and the liquid spectra were also given in the R(ω) representation. Accurate Raman spectra were recorded of the crystalline phases at temperatures above 78 K, and the external modes in the range 200–10 cm–1 were investigated as probes for the phase transitions. The fundamentals of chloroiodomethane have been listed and two crystalline phases were observed for this compound, while only one crystal phase was observed for the other molecules. No plastic phases were detected in any of the compounds. Preliminary results of these investigations are presented.
Fang-ming Wang - One of the best experts on this subject based on the ideXlab platform.
-
A novel Ag(I) coordination polymers based on 2-(pyridin-4-yl)-1H-imidazole-4,5-dicarboxylic acid: Syntheses, structures, ferroelectric, dielectric and optical properties
Inorganica Chimica Acta, 2013Co-Authors: Li-zhuang Chen, Deng-deng Huang, Fang-ming WangAbstract:Abstract A novel metal–organic framework (MOF) {[Ag2(HPIDC)]}n (1), based on a T-shaped tripodal ligand 2-(pyridin-4-yl)-1H-imidazole-4,5-dicarboxylaic acid (H3PIDC), has been synthesized by hydrothermal method. The crystal structure of complex 1 is a three-connected net with the vertex symbol of (102·104·104), which represents ThSi2 (103-b) network topology. Complex 1 crystallizes in the noncentric space Group (Cc), which belongs to the polar Point Group (Cs). The experimental results clearly show second-order nonlinear optical effects and ferroelectric feature. In addition, the photoluminescence of complex 1 was studied in solid state at room temperature.