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All results from a given calculation for CH3CH(NH2)COOH (Alanine)

using model chemistry: B3PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-323.516855
Energy at 298.15K-323.526368
Nuclear repulsion energy248.660900
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B3PW91/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3671 3516 13.66      
2 A 3553 3402 3.05      
3 A 3177 3043 16.80      
4 A 3156 3023 281.71      
5 A 3145 3012 27.14      
6 A 3076 2946 9.72      
7 A 3060 2931 16.36      
8 A 1800 1724 258.73      
9 A 1708 1636 54.44      
10 A 1543 1477 12.62      
11 A 1533 1468 5.83      
12 A 1451 1390 21.83      
13 A 1416 1356 187.95      
14 A 1400 1341 224.57      
15 A 1330 1274 17.14      
16 A 1259 1205 12.38      
17 A 1222 1170 24.25      
18 A 1167 1117 11.65      
19 A 1095 1049 44.20      
20 A 1038 994 1.80      
21 A 991 949 134.54      
22 A 952 912 23.06      
23 A 814 780 154.16      
24 A 799 766 43.31      
25 A 725 694 9.39      
26 A 578 553 2.92      
27 A 530 508 2.12      
28 A 408 391 3.78      
29 A 362 346 14.37      
30 A 324 311 8.99      
31 A 271 260 15.46      
32 A 241 231 0.51      
33 A 58 55 0.96      

Unscaled Zero Point Vibrational Energy (zpe) 23925.6 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 22913.6 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B3PW91/6-31G
ABC
0.15875 0.11477 0.07187

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.133 1.288 0.028
C2 1.406 -1.209 -0.266
C3 0.645 -0.057 0.392
C4 -0.861 -0.131 0.062
O5 -1.392 1.078 -0.241
O6 -1.509 -1.175 0.097
H7 1.599 1.329 -0.873
H8 1.670 1.762 0.743
H9 0.919 -2.158 -0.025
H10 1.403 -1.103 -1.357
H11 0.717 -0.157 1.483
H12 2.444 -1.241 0.080
H13 -0.609 1.714 -0.218

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.52911.47622.44782.54823.61321.01511.01233.45272.77582.09222.84851.8105
C22.52911.52902.53193.61442.93792.61703.14901.09281.09682.15411.09473.5508
C31.47621.52901.54402.41702.44552.10482.11742.15902.17371.09832.17542.2543
C42.44782.53191.54401.35521.22973.01013.23352.69952.84342.12393.48661.8828
O52.54823.61442.41701.35522.28213.06793.28853.98313.71682.99134.49411.0085
O63.61322.93792.44551.22972.28214.10814.37692.62303.25582.81383.95403.0425
H71.01512.61702.10483.01013.06794.10811.67413.65222.48702.92142.86762.3359
H81.01233.14902.11743.23353.28854.37691.67414.06433.56202.26673.17072.4741
H93.45271.09282.15902.69953.98312.62303.65224.06431.76722.51371.78224.1671
H102.77581.09682.17372.84343.71683.25582.48703.56201.76723.07111.78033.6441
H112.09222.15411.09832.12392.99132.81382.92142.26672.51373.07112.47472.8549
H122.84851.09472.17543.48664.49413.95402.86763.17071.78221.78032.47474.2591
H131.81053.55082.25431.88281.00853.04252.33592.47414.16713.64412.85494.2591

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 114.604 N1 C3 C4 108.261
N1 C3 H11 107.806 C2 C3 C4 110.957
C2 C3 H11 109.047 C3 N1 H7 114.030
C3 N1 H8 115.352 C3 C2 H9 109.750
C3 C2 H10 110.673 C3 C2 H12 110.936
C3 C4 O5 112.791 C3 C4 O6 123.290
C4 C3 H11 105.751 C4 O5 H13 104.651
O5 C4 O6 123.907 H7 N1 H8 111.339
H9 C2 H10 107.620 H9 C2 H12 109.123
H10 C2 H12 108.661
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.792      
2 C -0.478      
3 C -0.134      
4 C 0.561      
5 O -0.575      
6 O -0.433      
7 H 0.332      
8 H 0.333      
9 H 0.214      
10 H 0.169      
11 H 0.217      
12 H 0.165      
13 H 0.422      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  5.988 2.189 0.517 6.396
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.538 0.522 -0.444
y 0.522 -36.446 0.684
z -0.444 0.684 -33.234
Traceless
 xyz
x -5.697 0.522 -0.444
y 0.522 0.440 0.684
z -0.444 0.684 5.258
Polar
3z2-r210.515
x2-y2-4.091
xy0.522
xz-0.444
yz0.684


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.475 0.428 0.090
y 0.428 7.201 -0.180
z 0.090 -0.180 4.880


<r2> (average value of r2) Å2
<r2> 163.875
(<r2>)1/2 12.801