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

using model chemistry: MP3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP3/6-31+G**
 hartrees
Energy at 0K-322.858601
Energy at 298.15K-322.868226
HF Energy-321.882043
Nuclear repulsion energy250.371355
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 MP3/6-31+G**
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 3738 3479 200.71      
2 A 3704 3447 7.60      
3 A 3608 3358 3.30      
4 A 3257 3030 7.66      
5 A 3221 2997 26.11      
6 A 3142 2924 21.12      
7 A 3139 2921 5.29      
8 A 1948 1812 261.58      
9 A 1717 1598 36.48      
10 A 1564 1455 12.85      
11 A 1557 1448 1.80      
12 A 1481 1378 405.43      
13 A 1473 1371 2.55      
14 A 1446 1345 28.22      
15 A 1381 1285 47.32      
16 A 1292 1202 6.00      
17 A 1266 1178 9.30      
18 A 1201 1117 6.21      
19 A 1146 1066 53.52      
20 A 1054 980 0.46      
21 A 982 914 56.78      
22 A 931 866 77.18      
23 A 846 787 40.95      
24 A 824 767 76.30      
25 A 751 699 13.21      
26 A 568 528 9.59      
27 A 548 510 0.94      
28 A 420 391 6.87      
29 A 370 344 17.93      
30 A 303 282 15.23      
31 A 288 268 14.51      
32 A 241 224 0.98      
33 A 75 70 1.34      

Unscaled Zero Point Vibrational Energy (zpe) 24740.0 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 23020.6 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 MP3/6-31+G**
ABC
0.16276 0.11577 0.07195

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.049 1.365 -0.064
C2 1.483 -1.125 -0.170
C3 0.643 0.025 0.374
C4 -0.846 -0.177 0.052
O5 -1.524 0.965 -0.112
O6 -1.362 -1.264 -0.012
H7 1.325 1.344 -1.038
H8 1.847 1.689 0.464
H9 1.107 -2.077 0.193
H10 1.441 -1.140 -1.259
H11 0.696 0.020 1.466
H12 2.521 -1.008 0.136
H13 -0.868 1.677 -0.062

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.53021.46742.44672.60433.56781.01281.01003.45282.80282.06782.80021.9417
C22.53021.52492.52453.66222.85252.62252.90791.08611.09002.14641.08903.6587
C31.46741.52491.53702.41112.41452.04952.05632.16082.15891.09332.15742.2801
C42.44672.52451.53701.33811.20442.86683.30292.72882.80642.10203.46991.8578
O52.60433.66222.41111.33812.23703.01903.49574.03373.81192.88344.50760.9695
O63.56782.85252.41451.20442.23703.88264.38712.60773.07012.84073.89462.9825
H71.01282.62252.04952.86683.01903.88261.62723.64312.49642.90202.88882.4224
H81.01002.90792.05633.30293.49574.38711.62723.84823.33692.26202.79972.7652
H93.45281.08612.16082.72884.03372.60773.64313.84821.76062.48751.77384.2495
H102.80281.09002.15892.80643.81193.07012.49643.33691.76063.05371.76953.8328
H112.06782.14641.09332.10202.88342.84072.90202.26202.48753.05372.48152.7437
H122.80021.08902.15743.46994.50763.89462.88882.79971.77381.76952.48154.3282
H131.94173.65872.28011.85780.96952.98252.42242.76524.24953.83282.74374.3282

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.456 N1 C3 C4 109.035
N1 C3 H11 106.801 C2 C3 C4 111.077
C2 C3 H11 109.011 C3 N1 H7 110.103
C3 N1 H8 110.848 C3 C2 H9 110.578
C3 C2 H10 110.192 C3 C2 H12 110.132
C3 C4 O5 113.810 C3 C4 O6 123.006
C4 C3 H11 104.844 C4 O5 H13 106.128
O5 C4 O6 123.157 H7 N1 H8 107.106
H9 C2 H10 108.010 H9 C2 H12 109.279
H10 C2 H12 108.596
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability