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

using model chemistry: B3PW91/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-323.752768
Energy at 298.15K-323.762254
Nuclear repulsion energy250.752648
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/cc-pVTZ
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 3613 3475 10.38      
2 A 3525 3390 0.34      
3 A 3433 3301 296.37      
4 A 3143 3022 5.38      
5 A 3109 2989 24.03      
6 A 3048 2931 14.82      
7 A 3038 2921 10.37      
8 A 1859 1788 313.15      
9 A 1653 1589 32.92      
10 A 1493 1436 13.79      
11 A 1483 1426 3.42      
12 A 1434 1378 402.16      
13 A 1401 1347 9.01      
14 A 1386 1332 4.76      
15 A 1309 1259 6.88      
16 A 1239 1192 15.87      
17 A 1220 1173 10.89      
18 A 1152 1108 9.54      
19 A 1090 1048 40.49      
20 A 1016 977 0.70      
21 A 938 902 33.34      
22 A 905 870 61.18      
23 A 858 825 106.98      
24 A 809 777 5.92      
25 A 742 714 7.07      
26 A 573 551 3.17      
27 A 532 511 1.15      
28 A 404 388 4.49      
29 A 358 344 13.19      
30 A 286 275 13.70      
31 A 274 263 14.61      
32 A 229 220 0.25      
33 A 67 64 0.93      

Unscaled Zero Point Vibrational Energy (zpe) 23807.1 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 22893.0 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/cc-pVTZ
ABC
0.16330 0.11534 0.07245

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.110 1.315 0.005
C2 1.426 -1.177 -0.236
C3 0.640 -0.026 0.373
C4 -0.861 -0.144 0.055
O5 -1.443 1.028 -0.203
O6 -1.455 -1.187 0.071
H7 1.536 1.309 -0.914
H8 1.799 1.665 0.656
H9 0.968 -2.128 0.030
H10 1.432 -1.104 -1.326
H11 0.691 -0.100 1.464
H12 2.459 -1.168 0.116
H13 -0.703 1.676 -0.166

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.52301.46752.45292.57763.58401.01281.01023.44582.77972.07532.82811.8571
C22.52301.52082.52603.61802.89732.57843.00101.08871.09302.14231.09103.5608
C31.46751.52081.53932.40442.41462.05902.06892.15502.16271.09462.16312.2347
C42.45292.52601.53931.33341.20042.96573.27272.69812.84352.09673.47481.8407
O52.57763.61802.40441.33342.23173.07573.41413.97763.75092.93314.48860.9845
O63.58402.89732.41461.20042.23174.01834.36632.59913.20852.77953.91412.9701
H71.01282.57842.05902.96573.07574.01831.63053.60862.44972.89022.83662.3896
H81.01023.00102.06893.27273.41414.36631.63053.93263.42442.23532.95832.6344
H93.44581.08872.15502.69813.97762.59913.60863.93261.76152.49931.77524.1597
H102.77971.09302.16272.84353.75093.20852.44973.42441.76153.05671.77163.6925
H112.07532.14231.09462.09672.93312.77952.89022.23532.49933.05672.46692.7852
H122.82811.09102.16313.47484.48863.91412.83662.95831.77521.77162.46694.2629
H131.85713.56082.23471.84070.98452.97012.38962.63444.15973.69252.78524.2629

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.183 N1 C3 C4 109.308
N1 C3 H11 107.296 C2 C3 C4 111.270
C2 C3 H11 108.901 C3 N1 H7 110.888
C3 N1 H8 111.905 C3 C2 H9 110.247
C3 C2 H10 110.606 C3 C2 H12 110.752
C3 C4 O5 113.454 C3 C4 O6 123.133
C4 C3 H11 104.236 C4 O5 H13 104.130
O5 C4 O6 123.387 H7 N1 H8 107.405
H9 C2 H10 107.683 H9 C2 H12 109.058
H10 C2 H12 108.416
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.320      
2 C -0.264      
3 C -0.066      
4 C 0.295      
5 O -0.235      
6 O -0.306      
7 H 0.140      
8 H 0.143      
9 H 0.116      
10 H 0.087      
11 H 0.109      
12 H 0.090      
13 H 0.211      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  4.945 2.071 0.318 5.370
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.075 -0.211 -0.161
y -0.211 -37.244 0.213
z -0.161 0.213 -33.496
Traceless
 xyz
x -3.705 -0.211 -0.161
y -0.211 -0.959 0.213
z -0.161 0.213 4.664
Polar
3z2-r29.328
x2-y2-1.831
xy-0.211
xz-0.161
yz0.213


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.934 0.177 0.065
y 0.177 8.193 -0.078
z 0.065 -0.078 5.968


<r2> (average value of r2) Å2
<r2> 162.029
(<r2>)1/2 12.729