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

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-321.881357
Energy at 298.15K-321.891040
Nuclear repulsion energy249.729963
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 mPW1PW91/3-21G
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 3574 3411 12.33      
2 A 3471 3313 3.00      
3 A 3180 3035 3.79      
4 A 3154 3011 19.19      
5 A 3106 2965 6.74      
6 A 3078 2939 12.83      
7 A 2807 2680 377.64      
8 A 1839 1755 298.36      
9 A 1714 1636 47.46      
10 A 1567 1496 14.23      
11 A 1555 1485 11.80      
12 A 1502 1434 451.87      
13 A 1457 1391 16.36      
14 A 1399 1335 17.37      
15 A 1336 1275 5.15      
16 A 1259 1201 3.61      
17 A 1217 1162 31.96      
18 A 1164 1111 24.07      
19 A 1122 1072 94.67      
20 A 1092 1042 44.40      
21 A 1042 995 2.52      
22 A 960 917 46.16      
23 A 850 812 122.04      
24 A 796 760 8.84      
25 A 737 703 3.38      
26 A 590 563 1.27      
27 A 532 507 0.45      
28 A 429 409 20.58      
29 A 383 365 9.49      
30 A 333 318 14.01      
31 A 277 265 12.60      
32 A 244 233 0.93      
33 A 80 76 2.41      

Unscaled Zero Point Vibrational Energy (zpe) 23922.5 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 22836.4 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 mPW1PW91/3-21G
ABC
0.15740 0.11849 0.07273

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.115 1.294 -0.010
C2 1.371 -1.236 -0.239
C3 0.648 -0.058 0.404
C4 -0.865 -0.124 0.063
O5 -1.355 1.102 -0.201
O6 -1.501 -1.167 0.058
H7 1.536 1.279 -0.942
H8 1.752 1.729 0.658
H9 0.818 -2.147 0.001
H10 1.376 -1.128 -1.329
H11 0.726 -0.121 1.496
H12 2.401 -1.325 0.118
H13 -0.493 1.688 -0.165

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.55321.48892.43592.48473.59271.02271.01983.45362.77012.10202.91991.6637
C22.55321.52502.51573.59192.88892.61713.12141.09261.09582.16091.09343.4694
C31.48891.52501.55162.39202.44312.09502.11592.13432.16351.09602.18202.1624
C42.43592.51571.55161.34631.22262.95663.26052.63222.82302.14053.48001.8636
O52.48473.59192.39201.34632.28882.98973.28313.91393.70222.94994.48301.0424
O63.59272.88892.44311.22262.28884.02654.39662.51833.19522.84973.90613.0364
H71.02272.61712.09502.95662.98974.02651.67513.62582.44342.92532.94132.2115
H81.01983.12142.11593.26053.28314.39661.67514.04083.50022.27553.16862.3914
H93.45361.09262.13432.63223.91392.51833.62584.04081.76712.51901.78794.0568
H102.77011.09582.16352.82303.70223.19522.44343.50021.76713.06881.78403.5755
H112.10202.16091.09602.14052.94992.84972.92532.27552.51903.06882.48072.7418
H122.91991.09342.18203.48004.48303.90612.94133.16861.78791.78402.48074.1878
H131.66373.46942.16241.86361.04243.03642.21152.39144.05683.57552.74184.1878

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.797 N1 C3 C4 106.458
N1 C3 H11 107.852 C2 C3 C4 109.698
C2 C3 H11 109.984 C3 N1 H7 111.706
C3 N1 H8 113.695 C3 C2 H9 108.106
C3 C2 H10 110.207 C3 C2 H12 111.824
C3 C4 O5 111.064 C3 C4 O6 123.000
C4 C3 H11 106.619 C4 O5 H13 101.800
O5 C4 O6 125.931 H7 N1 H8 110.201
H9 C2 H10 107.700 H9 C2 H12 109.747
H10 C2 H12 109.164
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.742      
2 C -0.622      
3 C -0.263      
4 C 0.720      
5 O -0.601      
6 O -0.508      
7 H 0.321      
8 H 0.322      
9 H 0.262      
10 H 0.220      
11 H 0.277      
12 H 0.216      
13 H 0.398      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  5.898 1.975 0.465 6.237
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.221 1.234 -0.503
y 1.234 -36.486 0.401
z -0.503 0.401 -32.952
Traceless
 xyz
x -4.502 1.234 -0.503
y 1.234 -0.400 0.401
z -0.503 0.401 4.902
Polar
3z2-r29.803
x2-y2-2.735
xy1.234
xz-0.503
yz0.401


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.001 0.438 0.113
y 0.438 6.622 -0.104
z 0.113 -0.104 4.499


<r2> (average value of r2) Å2
<r2> 162.396
(<r2>)1/2 12.743