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

using model chemistry: CISD/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 CISD/6-31G*
 hartrees
Energy at 0K-322.635495
Energy at 298.15K-322.645215
Nuclear repulsion energy251.302781
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 CISD/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 3758 3479 210.30      
2 A 3737 3459 12.79      
3 A 3643 3372 5.83      
4 A 3288 3044 7.45      
5 A 3246 3005 28.37      
6 A 3180 2944 14.70      
7 A 3174 2939 13.23      
8 A 1990 1843 301.31      
9 A 1779 1647 44.35      
10 A 1598 1480 16.32      
11 A 1591 1473 2.39      
12 A 1524 1411 416.15      
13 A 1517 1404 4.77      
14 A 1487 1377 50.02      
15 A 1421 1316 58.65      
16 A 1326 1227 5.75      
17 A 1302 1205 7.10      
18 A 1234 1143 9.36      
19 A 1177 1090 61.09      
20 A 1081 1001 0.39      
21 A 1006 932 63.78      
22 A 962 890 85.70      
23 A 864 800 6.13      
24 A 834 772 127.14      
25 A 779 722 18.32      
26 A 585 542 10.87      
27 A 562 520 1.32      
28 A 434 401 6.90      
29 A 386 358 18.13      
30 A 307 285 17.82      
31 A 298 276 13.26      
32 A 246 228 1.03      
33 A 74 68 1.35      

Unscaled Zero Point Vibrational Energy (zpe) 25194.8 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 23325.3 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 CISD/6-31G*
ABC
0.16439 0.11636 0.07246

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.045 1.364 -0.066
C2 1.484 -1.115 -0.167
C3 0.640 0.029 0.372
C4 -0.842 -0.178 0.050
O5 -1.533 0.948 -0.111
O6 -1.348 -1.261 -0.012
H7 1.329 1.347 -1.036
H8 1.836 1.696 0.465
H9 1.109 -2.068 0.192
H10 1.451 -1.132 -1.256
H11 0.689 0.027 1.462
H12 2.520 -1.000 0.145
H13 -0.895 1.678 -0.060

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.52001.46272.43942.61173.55281.01111.00853.44242.79532.06162.79411.9651
C22.52001.52032.51653.65512.83952.61532.90261.08481.08922.14231.08823.6706
C31.46271.52031.53022.40822.40072.04802.05372.15602.15781.09112.15472.2942
C42.43942.51651.53021.33071.19762.86583.29412.72002.80572.09293.46161.8602
O52.61173.65512.40821.33072.21923.03373.49854.02093.81352.87424.50360.9714
O63.55282.83952.40071.19762.21923.87474.37132.59413.06552.82553.87962.9749
H71.01112.61532.04802.86583.03373.87471.62253.63522.49162.89692.88422.4509
H81.00852.90262.05373.29413.49854.37131.62253.84283.33262.25712.79912.7806
H93.44241.08482.15602.72004.02092.59413.63523.84281.75722.48541.77004.2561
H102.79531.08922.15782.80573.81353.06552.49163.33261.75723.05131.76683.8515
H112.06162.14231.09112.09292.87422.82552.89692.25712.48543.05132.47762.7483
H122.79411.08822.15473.46164.50363.87962.88422.79911.77001.76682.47764.3443
H131.96513.67062.29421.86020.97142.97492.45092.78064.25613.85152.74834.3443

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.283 N1 C3 C4 109.165
N1 C3 H11 106.750 C2 C3 C4 111.167
C2 C3 H11 109.139 C3 N1 H7 110.432
C3 N1 H8 111.085 C3 C2 H9 110.599
C3 C2 H10 110.473 C3 C2 H12 110.286
C3 C4 O5 114.472 C3 C4 O6 122.842
C4 C3 H11 104.719 C4 O5 H13 106.770
O5 C4 O6 122.648 H7 N1 H8 106.909
H9 C2 H10 107.858 H9 C2 H12 109.086
H10 C2 H12 108.470
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability