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

using model chemistry: CID/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 CID/6-31G
 hartrees
Energy at 0K-322.262941
Energy at 298.15K-322.272512
Nuclear repulsion energy248.039947
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 CID/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 3759 3515 12.07      
2 A 3653 3417 130.38      
3 A 3644 3408 55.69      
4 A 3237 3027 7.28      
5 A 3197 2990 29.53      
6 A 3132 2929 10.98      
7 A 3124 2921 15.55      
8 A 1862 1741 238.46      
9 A 1792 1676 54.07      
10 A 1601 1497 10.41      
11 A 1593 1490 3.41      
12 A 1520 1421 10.43      
13 A 1474 1378 9.07      
14 A 1423 1331 246.07      
15 A 1389 1299 222.84      
16 A 1312 1227 13.47      
17 A 1277 1194 8.21      
18 A 1218 1139 17.89      
19 A 1130 1057 49.05      
20 A 1081 1011 0.62      
21 A 990 926 44.30      
22 A 868 812 171.97      
23 A 831 778 7.16      
24 A 830 776 219.82      
25 A 748 700 12.69      
26 A 571 534 8.48      
27 A 555 519 2.23      
28 A 425 398 3.83      
29 A 369 345 9.56      
30 A 293 274 11.48      
31 A 290 271 16.15      
32 A 241 225 0.38      
33 A 54 51 0.97      

Unscaled Zero Point Vibrational Energy (zpe) 24741.3 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 23138.1 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 CID/6-31G
ABC
0.15925 0.11346 0.07095

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.099 1.340 -0.012
C2 1.467 -1.156 -0.232
C3 0.651 -0.009 0.385
C4 -0.847 -0.163 0.060
O5 -1.504 1.003 -0.188
O6 -1.417 -1.247 0.058
H7 1.486 1.386 -0.944
H8 1.699 1.799 0.655
H9 1.056 -2.120 0.068
H10 1.435 -1.100 -1.324
H11 0.721 -0.069 1.477
H12 2.509 -1.091 0.091
H13 -0.860 1.739 -0.179

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.53241.47602.45942.63023.60901.01021.00733.46072.79012.08412.81232.0067
C22.53241.53692.53473.67292.90042.64063.09351.08961.09442.15801.09243.7154
C31.47601.53691.53992.44832.43182.10052.10702.17242.17371.09552.17042.3788
C42.45942.53471.53991.36121.22452.97463.26812.72952.82822.11513.48171.9172
O52.63023.67292.44831.36122.26463.10733.40544.04623.78812.97794.53490.9776
O63.60902.90042.43181.22452.26464.04514.39742.62333.17302.82343.92943.0464
H71.01022.64062.10052.97463.10734.04511.66483.67462.51532.92632.87372.4929
H81.00733.09352.10703.26813.40544.39741.66484.01383.51912.26253.05392.6921
H93.46071.08962.17242.72954.04622.62333.67464.01381.76712.51061.77994.3159
H102.79011.09442.17372.82823.78813.17302.51533.51911.76713.06861.77633.8262
H112.08412.15801.09552.11512.97792.82342.92632.26252.51063.06862.48242.9174
H122.81231.09242.17043.48174.53493.92942.87373.05391.77991.77632.48244.4088
H132.00673.71542.37881.91720.97763.04642.49292.69214.31593.82622.91744.4088

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 114.372 N1 C3 C4 109.255
N1 C3 H11 107.354 C2 C3 C4 110.938
C2 C3 H11 108.971 C3 N1 H7 114.000
C3 N1 H8 114.781 C3 C2 H9 110.441
C3 C2 H10 110.266 C3 C2 H12 110.117
C3 C4 O5 114.976 C3 C4 O6 122.806
C4 C3 H11 105.514 C4 O5 H13 109.017
O5 C4 O6 122.190 H7 N1 H8 111.214
H9 C2 H10 108.011 H9 C2 H12 109.317
H10 C2 H12 108.639
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability