return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP3=FULL/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 MP3=FULL/6-31G*
 hartrees
Energy at 0K-322.816354
Energy at 298.15K-322.825977
HF Energy-321.861366
Nuclear repulsion energy250.243431
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=FULL/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 3632 3408 4.63      
2 A 3606 3384 206.49      
3 A 3539 3320 5.18      
4 A 3219 3021 5.93      
5 A 3182 2986 23.12      
6 A 3108 2917 20.30      
7 A 3104 2912 3.20      
8 A 1951 1830 263.16      
9 A 1734 1627 42.23      
10 A 1559 1462 17.30      
11 A 1551 1455 2.84      
12 A 1494 1402 437.15      
13 A 1472 1381 10.65      
14 A 1448 1359 13.98      
15 A 1385 1300 33.80      
16 A 1296 1216 7.07      
17 A 1270 1192 9.33      
18 A 1202 1128 6.74      
19 A 1149 1078 59.22      
20 A 1055 990 0.59      
21 A 987 926 77.97      
22 A 939 881 63.41      
23 A 851 798 58.16      
24 A 829 778 68.33      
25 A 756 709 13.61      
26 A 571 536 9.19      
27 A 550 516 0.96      
28 A 424 398 6.55      
29 A 380 357 19.57      
30 A 304 285 16.52      
31 A 292 274 13.55      
32 A 239 224 0.87      
33 A 75 70 1.33      

Unscaled Zero Point Vibrational Energy (zpe) 24575.5 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 23059.2 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 MP3=FULL/6-31G*
ABC
0.16271 0.11579 0.07197

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.046 1.366 -0.065
C2 1.484 -1.124 -0.169
C3 0.642 0.025 0.375
C4 -0.845 -0.178 0.051
O5 -1.524 0.962 -0.112
O6 -1.360 -1.265 -0.013
H7 1.322 1.347 -1.044
H8 1.846 1.697 0.466
H9 1.108 -2.082 0.196
H10 1.441 -1.140 -1.264
H11 0.696 0.021 1.472
H12 2.527 -1.006 0.138
H13 -0.867 1.683 -0.061

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.53101.46792.44432.60193.56551.01801.01543.45872.80652.07182.80391.9383
C22.53101.52492.52313.66112.85162.62642.91461.09141.09522.15071.09443.6631
C31.46791.52491.53552.40992.41312.05492.06212.16552.16361.09812.16142.2838
C42.44432.52311.53551.33751.20382.86773.30612.73132.80742.10483.47321.8655
O52.60193.66112.40991.33752.23503.01983.49724.03633.81332.88434.51090.9775
O63.56552.85162.41311.20382.23503.88314.39082.60873.07072.84293.89892.9895
H71.01802.62642.05492.86773.01983.88311.63613.65242.49952.91192.89552.4229
H81.01542.91462.06213.30613.49724.39081.63613.85973.34722.26802.80642.7631
H93.45871.09142.16552.73134.03632.60873.65243.85971.76852.49421.78184.2597
H102.80651.09522.16362.80743.81333.07072.49953.34721.76853.06361.77823.8400
H112.07182.15071.09812.10482.88432.84292.91192.26802.49423.06362.48732.7481
H122.80391.09442.16143.47324.51093.89892.89552.80641.78181.77822.48734.3345
H131.93833.66312.28381.86550.97752.98952.42292.76314.25973.84002.74814.3345

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.481 N1 C3 C4 108.927
N1 C3 H11 106.804 C2 C3 C4 111.056
C2 C3 H11 109.072 C3 N1 H7 110.198
C3 N1 H8 110.964 C3 C2 H9 110.633
C3 C2 H10 110.251 C3 C2 H12 110.128
C3 C4 O5 113.850 C3 C4 O6 123.048
C4 C3 H11 104.890 C4 O5 H13 106.341
O5 C4 O6 123.071 H7 N1 H8 107.150
H9 C2 H10 107.955 H9 C2 H12 109.210
H10 C2 H12 108.608
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability