Benzimidazole: Small planar molecule with diverse anti-corrosion potentials

2017 ◽  
Vol 246 ◽  
pp. 66-90 ◽  
Author(s):  
I.B. Obot ◽  
Ubong M. Edouk
Keyword(s):  
Planar Molecule

(1E,2E)-1,2-Bis[(E)-3-phenylallylidene]hydrazine

2007 ◽  
Vol 63 (11) ◽  
pp. o4443-o4443
Author(s):  
Xiao-Hua Chen
Keyword(s):  
Hydrazine Hydrate ◽  
Title Compound ◽  
Inversion Center ◽  
Planar Molecule

The title compound [alternatively called (E)-3-phenylprop-2-enal azine], C18H16N2, was synthesized by the reaction of hydrocinnamaldehyde with hydrazine hydrate. The nearly planar molecule is centrosymmetric, with the mid-point of the N—N bond lying at an inversion center.

scholarly journals 6-(4-Nitrophenoxy)hexanol

2009 ◽  
Vol 65 (6) ◽  
pp. o1285-o1285
Author(s):  
Muhammad Saif Ullah Khan ◽  
Zareen Akhter ◽  
Michael Bolte ◽  
Sajjad A. Cheema ◽  
Humaira M. Siddiqi
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Compound C ◽  
Planar Molecule

The title compound, C12H17NO4, features an almost planar molecule (r.m.s. deviation for all non-H atoms = 0.070 Å). All methylene C—C bonds adopt an antiperiplanar conformation. In the crystal structure the molecules lie in planes parallel to (1\overline{1}2) and the packing is stabilized by O—H...O hydrogen bonds.

Pseudo-Commensurate Epitaxy of A Non-Planar Molecule of Isoindoline Derivative At Liquid-Solid Interface

2002 ◽  
Vol 389 (1) ◽  
pp. 97-104 ◽  
Author(s):  
Takashi Nemoto ◽  
Yoshio Adachi ◽  
Eiichi Fujiwara ◽  
Seiji Isoda
Keyword(s):  
Solid Interface ◽  
Planar Molecule

scholarly journals Self-assembly of two robust 3D supramolecular organic frameworks from a geometrically non-planar molecule for high gas selectivity performance

2019 ◽  
Vol 10 (26) ◽  
pp. 6565-6571 ◽  
Author(s):  
Yue Zhou ◽  
Liang Kan ◽  
Jarrod F. Eubank ◽  
Guanghua Li ◽  
Lirong Zhang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Light Hydrocarbons ◽  
Planar Molecule ◽  
Gas Selectivity

Two 3D SOFs were synthesized based on a ‘direction-oriented’ strategy. The unique and permanent porosity structures exhibit remarkable ability to separate CO2 from N2 and light hydrocarbons.

Mikrowellenspektrum von 12C34SF37Cl

1976 ◽  
Vol 31 (6) ◽  
pp. 594-601 ◽  
Author(s):  
R. Hamm ◽  
H. J. Kohrmann ◽  
H. Günther ◽  
W. Zeil
Keyword(s):  
Equilibrium Structure ◽  
Microwave Spectrum ◽  
Natural Abundance ◽  
Least Square ◽  
Centrifugal Distortion ◽  
Rotational Constants ◽  
Isotopic Species ◽  
Planar Molecule ◽  
Least Square Fit ◽  
Centrifugal Distortion Constants

The microwave spectrum of the isotopic species 12C34SF37Cl has been measured in natural abundance. The three rotational constants and five quartic centrifugal distortion constants have been determined by a least square fit. In comparison with our former calculations, the five structural r0-parameters of the planar molecule have now been determined from eight rotational constants instead of six, thus yielding remarkably smaller confidence intervalls. Furthermore an re-structure has been calculated and an equilibrium-structure has been estimated

Studies on metal hydroxy compounds. II. Infrared spectra of zinc derivatives ϵ-Zn(OH)2, β-ZnOHCl, ZnOHF, Zn5(OH)8Cl2, and Zn5(OH)8Cl2·H2O

1967 ◽  
Vol 45 (6) ◽  
pp. 585-588 ◽  
Author(s):  
O. K. Srivastava ◽  
E. A. Secco
Keyword(s):  
Infrared Spectra ◽  
Group Factor ◽  
Absorption Bands ◽  
Site Group ◽  
Planar Molecule ◽  
Stretching Vibration ◽  
Hydroxy Compounds ◽  
A Site ◽  
First Time ◽  
Unambiguous Assignment

Infrared spectra of ϵ-Zn(OH)2, β-ZnOHCl, ZnOHF, Zn5(OH)8Cl2, and Zn5(OH)8Cl2·H2O and their deuterated analogues in the range 2.5–16 μ are reported for the first time. The effects of substituting a halogen for an OH group in Zn(OH)2 are (i) sharper OH stretching absorption bands, (ii) splitting of bands involving OH to give distinct doublets in ZnOHF and Zn5(OH)8Cl2, indicating strong intermolecular coupling, and (iii) shift of the OH stretching vibration to a higher frequency. Strong absorption bands are observed in the region of 695–780 cm−1 for all compounds and also near 1 020 ± 30 cm−1 in all cases except ZnOHCl. All the observed bands are displaced to lower frequencies by the deuterated analogues, with vH/vD ratios in the range 1.30–1.36. A cursory interpretation of the spectra of ZnOHCl and ZnOHF is given in terms of a planar molecule of Cs symmetry, but the unambiguous assignment of the bands must await a site group or group factor analysis.

Role of the deposition temperature on the self-assembly of the non-planar molecule benzene-1,3,5-triphosphonic acid (BTP) at the liquid–solid interface

2016 ◽  
Vol 18 (35) ◽  
pp. 24219-24227 ◽  
Author(s):  
Doan Chau Yen Nguyen ◽  
Lars Smykalla ◽  
Thi Ngoc Ha Nguyen ◽  
Michael Mehring ◽  
Michael Hietschold
Keyword(s):  
Self Assembly ◽  
Deposition Temperature ◽  
Supramolecular Structures ◽  
The Self ◽  
Solid Interface ◽  
Planar Molecule ◽  
Hydrogen Bonded

Hydrogen-bonded supramolecular structures of BTP at the undecanol–graphite interface were studied by STM in dependence on the deposition temperature.

Molecular orbital computations and 1H nuclear magnetic resonance measurements of the bending motion of xanthene in the gas and in solution

1990 ◽  
Vol 68 (9) ◽  
pp. 1548-1552 ◽  
Author(s):  
Ted Schaefer ◽  
Rudy Sebastian
Keyword(s):  
Long Range ◽  
Solvent Mixture ◽  
Coupling Constants ◽  
Spin Coupling ◽  
Ambient Temperatures ◽  
Folding Angle ◽  
Analytical Functions ◽  
Planar Molecule ◽  
Spin Coupling Constants ◽  
Spin Spin Coupling

STO-3G and 4-31G MO computations are reported for a range of values of the folding angle in xanthene, the dihedral angle between the benzene planes. Unlike 9,10-dihydroanthracene but like dibenzo-p-dioxin, its "parent" molecules, the inversion or puckering potential for xanthene is calculated to be rather flat. The molecular energies between a folding angle of 180° (planar molecule) and 120° are reproduced by analytical functions of [Formula: see text], θ being the folding angle. The long-range spin–spin coupling constants between the methylene protons and the aromatic protons at 300 K are reported for xanthene dissolved in a CS2/C6D12 solvent mixture and in acetone-d6 solution. These conformationally sensitive coupling constants are consistent with the theoretical puckering potentials and therefore with substantial "butterfly" motion at ambient temperatures. The computed geometries of xanthene are also given and briefly discussed. Keywords: xanthene, MO computations on inversion; xanthene, long-range spin–spin coupling constants; xanthene, internal motion; xanthene, inversion potentials.

Binary Transition Metal Dinitrogen Complexes. Part II. Matrix Infrared and Raman Spectra, Structure, and Bonding of Pt(N2)n (where n = 1–3)

1973 ◽  
Vol 51 (16) ◽  
pp. 2710-2721 ◽  
Author(s):  
E. P. Kündig ◽  
M. Moskovits ◽  
G. A. Ozin
Keyword(s):  
Spectral Lines ◽  
Site Symmetry ◽  
Carbonyl Complexes ◽  
Reaction Products ◽  
Substitutional Site ◽  
Planar Molecule ◽  
Infrared And Raman Spectroscopy ◽  
Dinitrogen Complexes ◽  
The Individual ◽  
Solid Argon

The products of the cocondensation reactions of Pt atoms with N2 at 4.2–10 °K are investigated by matrix isolation infrared and Raman spectroscopy and are shown to be binary dinitrogen complexes of the form Pt(N2)n. Examination of the reaction products in pure 14N2, in 14N2/15N2, in dilute 14N2/Ar, in 14N2/15N2/Ar as well as 14N2/14N/15N/15N2/Ar matrices establishes the stoichiometries of the complexes to be n = 1–3. Structural assignments can be made for the complexes Pt(N2) and Pt(N2)3 which contain end-on bonded dinitrogen and are found to be similar to the corresponding dinitrogen and carbonyl complexes of nickel and palladium. Pt(N2)2 appears to be the exception in this series of complexes, for which side-on bonded dinitrogen is proposed.On the basis of the Cotton–Kraihanzel force field of approximation and the isotope intensity sum rules, isotopic frequencies are computed for the NN stretching modes of the individual complexes and isotopic absorption intensities for Pt(N2)3 and are found to be in close agreement with the observed values. In the case of Pt(N2), the scrambled 14N15N isotope data establish that the dinitrogen ligand is bonded to the Pt atom in an end-on fashion. On the basis of its unusual spectroscopic behavior Pt(N2)2 is proposed to have sideways bonded dinitrogen ligands. Pt(N2)3 in solid α-N2 is found to be slightly distorted from a regular triangular planar molecule but appears to be regular D3h in solid argon. Calculations show that a substitutional site symmetry of C2 for Pt(N2)3 satisfactorily accounts for all the spectral lines observed for the complex in nitrogen. Comparisons are made within the group of binary dinitrogen complexes M(N2)n where n = 1–3 and with the corresponding binary carbonyl complexes M(CO)n. The relationship between the dinitrogen complexes NiN2, PdN2, and PtN2 and nitrogen chemisorbed on those same metals is discussed.

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