bond angle


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bond angle

[′bänd ‚aŋ·gəl]
(physical chemistry)
The angle between bonds sharing a common atom. Also known as valence angle.
References in periodicals archive ?
Figure 5 shows the bond-angle distributions for the Ge and Sb atoms with Se-Ge-Se and Se-Sb-Se three-particle bond angles. We calculated the three-particle bond-angle distributions using the final atomic configuration of the RMC algorithm, plotted both as the function of cos([THETA]) (scale below) and [THETA] (upper scale), where [THETA] represents the actual bond angle.
O bond angle is closest to 120[degrees] compared with that of the other species ([R.sub.2] = C[H.sub.2]Cl) in Table 2 and Figures 1(a) and 1(c).
Caption: FIGURE 2: Local configurations of the finite SWCNTs [8, k] (a) and DWCNTs [8, k]@[16, k + 2] (d); and the changes in bond length (b, e) and bond angle (c, f) versus k.
PDB: Protein Data Bank H: [alpha]-Helix G: 3(10)-Helix E: [beta]-Sheet [tau]: N[C.sup.[alpha]]C bond angle. https://doi.org/10.1155/2017/2617629
However, developers have taken the bond angle a step further, tapping into the Tel Aviv Stock Exchange in Israel for big sums--affectionately known as the "real estate financing land of milk and honey."
Larger wavenumber is a result of the smaller P-O-P bond angle. While, smaller bond angle were results from shorter phosphate linkages or smaller metal cation size [6].
where [k.sub.r], [k.sub.[theta]], and [k.sub.[phi]] represent the bond stretching force constant, bond angle variation force constant, and out-ofplane angle variation resistance, respectively.
The molecular modeling studies reflect the theoretical important application of these newly synthesized compounds in coordination chemistry that is, in determining the correct bond length, bond angle as well as geometry, and so forth, and also open up the several opportunities to explore the biological potency of these compounds.
VC (%) CB-CG 1,523 0,011 1,500 1,544 0,754 CG-CD 1,525 0,013 1,509 1,568 0,873 CD-OE1 1,250 0,009 1,231 1,271 0,684 CB-CA 1,535 0,010 1,524 1,576 0,671 CA-C 1,524 0,008 1,502 1,540 0,504 C-O 1,245 0,010 1,213 1,261 0,833 CA-N 1,491 0,010 1,460 1,514 0,656 C-O1 1,247 0,006 1,237 1,257 0,477 CD-OE1 1,254 0,010 1,242 1,282 0,778 TABLE 3: Summary of descriptive statistic for bond angle between heavy atoms of glutamate conformers.
NUMBER OF 1 EXAMPLES MOLECULAR BOND ANGLE EQUIVALENT SHAPE BOND 2 [CO.sub.2] linear 180 [degrees] = [cos.sub.-1] (-1/1) 3 [NO.sup.3], trigonal 120 [degrees] = [cos.sub.-1] [BF.sup.3] planar (-1/2) 4 [CH.sup.4], tetrahedral 109.471 = [cos.sub.-1] [NH.sup.4+] [degrees] (-1/3) 5 [PF.sup.5] trigonal 90[degrees] = [cos.sub.-1] bipyramidal and 120 (-1/4) [degrees] 6 [SF.sup.6] octahedral 90 [degrees] = [cos.sub.-1] (-1/5) Table 1: the idealized equilibrium bond angles in molecules with a central atom surrounded by 2, 3, 4, 5, and 6 equivalent bonds.
In these polymers, the deformation modes of a molecular chain are both bond stretching and bond angle bending which have high force constants.
It comprises only a single band because all of the bonds in the crystal have the same bond angle and bond strength-resulting in a single vibrational frequency.