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

using model chemistry: MP2/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 MP2/cc-pVTZ
 hartrees
Energy at 0K-323.183038
Energy at 298.15K-323.192564
Nuclear repulsion energy250.811177
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 MP2/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 3634 3450 13.02      
2 A 3534 3355 2.37      
3 A 3491 3315 283.48      
4 A 3193 3032 4.03      
5 A 3163 3003 18.56      
6 A 3098 2942 7.90      
7 A 3076 2921 11.95      
8 A 1843 1750 251.61      
9 A 1654 1571 32.23      
10 A 1515 1438 13.07      
11 A 1505 1429 3.50      
12 A 1436 1363 381.61      
13 A 1411 1340 6.08      
14 A 1397 1326 4.70      
15 A 1326 1259 13.27      
16 A 1252 1189 15.10      
17 A 1226 1164 9.71      
18 A 1169 1110 6.53      
19 A 1107 1051 45.73      
20 A 1024 972 0.78      
21 A 950 902 36.78      
22 A 898 853 67.51      
23 A 870 826 96.07      
24 A 814 773 8.49      
25 A 739 702 6.97      
26 A 573 544 4.58      
27 A 535 508 0.79      
28 A 408 387 5.35      
29 A 361 343 14.17      
30 A 284 269 13.03      
31 A 280 265 15.74      
32 A 237 225 0.90      
33 A 66 63 1.17      

Unscaled Zero Point Vibrational Energy (zpe) 24032.9 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 22819.2 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 MP2/cc-pVTZ
ABC
0.16292 0.11621 0.07254

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.101 1.323 -0.017
C2 1.425 -1.169 -0.218
C3 0.641 -0.014 0.381
C4 -0.853 -0.148 0.057
O5 -1.460 1.024 -0.175
O6 -1.431 -1.207 0.045
H7 1.473 1.295 -0.959
H8 1.849 1.642 0.583
H9 0.988 -2.117 0.083
H10 1.395 -1.118 -1.307
H11 0.696 -0.063 1.470
H12 2.464 -1.133 0.103
H13 -0.727 1.677 -0.128

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.52131.46902.44672.58293.58001.01351.01073.44362.77652.07302.81171.8653
C22.52131.51922.51143.62402.86832.57412.95381.08631.09042.14551.08833.5695
C31.46901.51921.53382.40782.41402.05012.06012.15232.15291.09172.15762.2337
C42.44672.51141.53381.33991.20682.91983.28332.69582.80252.09773.46061.8386
O52.58293.62402.40781.33992.24203.04793.45033.99063.74422.92114.48640.9825
O63.58002.86832.41401.20682.24203.96284.37792.58493.13392.80373.89652.9739
H71.01352.57412.05012.91983.04793.96281.62513.60102.43952.88992.82982.3826
H81.01072.95382.06013.28333.45034.37791.62513.88893.37572.24172.88272.6728
H93.44361.08632.15232.69583.99062.58493.60103.88891.75932.49541.77444.1693
H102.77651.09042.15292.80253.74423.13392.43953.37571.75933.05131.76943.7020
H112.07302.14551.09172.09772.92112.80372.88992.24172.49543.05132.47812.7582
H122.81171.08832.15763.46064.48643.89652.82982.88271.77441.76942.47814.2586
H131.86533.56952.23371.83860.98252.97392.38262.67284.16933.70202.75824.2586

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.067 N1 C3 C4 109.112
N1 C3 H11 107.180 C2 C3 C4 110.688
C2 C3 H11 109.432 C3 N1 H7 109.981
C3 N1 H8 111.009 C3 C2 H9 110.286
C3 C2 H10 110.093 C3 C2 H12 110.589
C3 C4 O5 113.656 C3 C4 O6 123.038
C4 C3 H11 104.808 C4 O5 H13 103.613
O5 C4 O6 123.283 H7 N1 H8 106.800
H9 C2 H10 107.848 H9 C2 H12 109.361
H10 C2 H12 108.602
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability