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

using model chemistry: MP2=FULL/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 MP2=FULL/3-21G*
 hartrees
Energy at 0K-320.703030
Energy at 298.15K-320.712625
Nuclear repulsion energy246.998656
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=FULL/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3541 3357 4.31      
2 A 3435 3257 0.65      
3 A 3190 3024 6.32      
4 A 3161 2997 21.83      
5 A 3111 2949 194.66      
6 A 3109 2947 89.43      
7 A 3089 2928 10.68      
8 A 1763 1671 172.49      
9 A 1747 1656 29.51      
10 A 1600 1517 7.60      
11 A 1594 1511 7.53      
12 A 1486 1409 15.83      
13 A 1441 1366 317.51      
14 A 1422 1348 78.15      
15 A 1369 1298 23.60      
16 A 1270 1204 2.56      
17 A 1214 1151 15.98      
18 A 1157 1097 29.81      
19 A 1090 1033 39.68      
20 A 1060 1005 1.75      
21 A 998 946 117.18      
22 A 970 920 99.66      
23 A 852 807 83.07      
24 A 782 741 6.19      
25 A 718 681 5.90      
26 A 562 533 3.54      
27 A 531 503 0.12      
28 A 413 392 8.69      
29 A 377 357 19.82      
30 A 324 308 14.41      
31 A 281 266 13.51      
32 A 236 224 0.45      
33 A 85 80 2.18      

Unscaled Zero Point Vibrational Energy (zpe) 23988.0 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 22740.7 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=FULL/3-21G*
ABC
0.15468 0.11557 0.07068

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.078 1.357 -0.051
C2 1.447 -1.191 -0.202
C3 0.659 -0.016 0.402
C4 -0.855 -0.162 0.062
O5 -1.463 1.052 -0.143
O6 -1.437 -1.253 0.011
H7 1.403 1.331 -1.023
H8 1.810 1.753 0.542
H9 0.959 -2.125 0.087
H10 1.433 -1.123 -1.296
H11 0.741 -0.033 1.496
H12 2.486 -1.191 0.144
H13 -0.686 1.711 -0.108

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.57851.50482.46142.56133.62521.02521.02213.48612.79732.10612.91701.8010
C22.57851.53862.53593.67472.89282.65253.05841.09251.09622.17281.09423.6034
C31.50481.53861.55902.43712.46512.09722.11532.15342.16991.09682.18752.2479
C42.46142.53591.55901.37271.23762.91663.31732.67302.82912.15003.49691.8885
O52.56133.67472.43711.37272.31043.01123.41704.00113.80082.95324.55021.0195
O63.62522.89282.46511.23762.31043.97664.45702.55063.15632.90493.92533.0605
H71.02522.65252.09722.91663.01123.97661.67163.65652.46932.93952.98212.3125
H81.02213.05842.11533.31733.41704.45701.67163.99633.43442.28933.04712.5802
H93.48611.09252.15342.67304.00112.55063.65653.99631.77182.53151.79034.1785
H102.79731.09622.16992.82913.80083.15632.46933.43441.77183.07571.78443.7332
H112.10612.17281.09682.15002.95322.90492.93952.28932.53153.07572.49242.7663
H122.91701.09422.18753.49694.55023.92532.98213.04711.79031.78442.49244.3068
H131.80103.60342.24791.88851.01953.06052.31252.58024.17853.73322.76634.3068

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.820 N1 C3 C4 106.893
N1 C3 H11 107.053 C2 C3 C4 109.902
C2 C3 H11 109.939 C3 N1 H7 110.537
C3 N1 H8 112.259 C3 C2 H9 108.666
C3 C2 H10 109.747 C3 C2 H12 111.251
C3 C4 O5 112.311 C3 C4 O6 123.232
C4 C3 H11 106.814 C4 O5 H13 103.277
O5 C4 O6 124.444 H7 N1 H8 109.468
H9 C2 H10 108.100 H9 C2 H12 109.909
H10 C2 H12 109.111
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability