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

using model chemistry: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-323.679243
Energy at 298.15K-323.688796
Nuclear repulsion energy250.810366
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 mPW1PW91/6-31G**
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 3657 3480 9.38      
2 A 3559 3386 0.54      
3 A 3473 3305 296.86      
4 A 3190 3035 5.03      
5 A 3154 3001 24.13      
6 A 3082 2933 15.21      
7 A 3074 2925 11.47      
8 A 1908 1815 288.70      
9 A 1675 1594 38.96      
10 A 1514 1441 20.03      
11 A 1505 1432 3.50      
12 A 1467 1396 439.84      
13 A 1421 1352 12.19      
14 A 1402 1334 3.48      
15 A 1329 1264 11.71      
16 A 1266 1205 11.91      
17 A 1235 1175 7.03      
18 A 1171 1115 9.67      
19 A 1113 1059 41.46      
20 A 1027 977 1.34      
21 A 951 905 47.24      
22 A 923 878 65.32      
23 A 882 840 120.87      
24 A 819 779 7.70      
25 A 745 709 7.96      
26 A 572 544 4.59      
27 A 539 512 1.13      
28 A 411 391 5.24      
29 A 364 347 16.63      
30 A 314 298 16.29      
31 A 275 262 14.50      
32 A 228 217 0.30      
33 A 78 74 1.27      

Unscaled Zero Point Vibrational Energy (zpe) 24160.9 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 22989.1 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 mPW1PW91/6-31G**
ABC
0.16256 0.11645 0.07244

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.073 1.338 -0.026
C2 1.449 -1.158 -0.206
C3 0.643 -0.005 0.374
C4 -0.855 -0.157 0.053
O5 -1.467 1.005 -0.162
O6 -1.418 -1.223 0.034
H7 1.437 1.327 -0.974
H8 1.808 1.691 0.573
H9 1.003 -2.108 0.088
H10 1.449 -1.117 -1.300
H11 0.697 -0.047 1.469
H12 2.485 -1.125 0.141
H13 -0.741 1.671 -0.116

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.53051.46622.44162.56603.57301.01471.01183.44892.79062.07282.84411.8473
C22.53051.52172.52563.63162.87772.60052.97471.09021.09442.14601.09253.5788
C31.46621.52171.53992.40072.41762.05452.06692.15272.16491.09672.16802.2284
C42.44162.52561.53991.33151.20502.91733.28312.69432.83892.10373.47831.8390
O52.56603.63162.40071.33152.23733.03283.42643.98223.78182.90724.50010.9855
O63.57302.87772.41761.20502.23733.95804.37992.57793.16382.81263.90492.9749
H71.01472.60052.05452.91733.03283.95801.63173.62132.46502.89852.89032.3665
H81.01182.97472.06693.28313.42644.37991.63173.91333.39342.24882.92802.6415
H93.44891.09022.15272.69433.98222.57793.62133.91331.76272.49991.77884.1669
H102.79061.09442.16492.83893.78183.16382.46503.39341.76273.06171.77443.7374
H112.07282.14601.09672.10372.90722.81262.89852.24882.49993.06172.47412.7443
H122.84411.09252.16803.47834.50013.90492.89032.92801.77881.77442.47414.2769
H131.84733.57882.22841.83900.98552.97492.36652.64154.16693.73742.74434.2769

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.746 N1 C3 C4 108.596
N1 C3 H11 107.066 C2 C3 C4 111.161
C2 C3 H11 109.010 C3 N1 H7 110.490
C3 N1 H8 111.728 C3 C2 H9 109.916
C3 C2 H10 110.638 C3 C2 H12 110.993
C3 C4 O5 113.258 C3 C4 O6 123.007
C4 C3 H11 104.603 C4 O5 H13 104.071
O5 C4 O6 123.708 H7 N1 H8 107.248
H9 C2 H10 107.582 H9 C2 H12 109.163
H10 C2 H12 108.465
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.687      
2 C -0.395      
3 C -0.117      
4 C 0.635      
5 O -0.510      
6 O -0.478      
7 H 0.284      
8 H 0.286      
9 H 0.178      
10 H 0.138      
11 H 0.178      
12 H 0.130      
13 H 0.358      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  4.999 2.175 0.295 5.460
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.385 -0.052 -0.356
y -0.052 -36.751 -0.046
z -0.356 -0.046 -33.011
Traceless
 xyz
x -3.505 -0.052 -0.356
y -0.052 -1.053 -0.046
z -0.356 -0.046 4.557
Polar
3z2-r29.114
x2-y2-1.635
xy-0.052
xz-0.356
yz-0.046


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.774 0.294 0.103
y 0.294 7.228 -0.087
z 0.103 -0.087 5.136


<r2> (average value of r2) Å2
<r2> 161.599
(<r2>)1/2 12.712