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

using model chemistry: B3PW91/6-31+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 B3PW91/6-31+G**
 hartrees
Energy at 0K-323.652904
Energy at 298.15K-323.662345
Nuclear repulsion energy249.980764
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 B3PW91/6-31+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 3642 3497 15.32      
2 A 3544 3402 0.55      
3 A 3427 3290 334.62      
4 A 3166 3040 4.97      
5 A 3132 3007 24.09      
6 A 3068 2946 11.09      
7 A 3054 2932 16.11      
8 A 1862 1788 345.29      
9 A 1661 1594 41.78      
10 A 1501 1441 15.62      
11 A 1491 1432 3.63      
12 A 1431 1374 416.35      
13 A 1408 1352 9.59      
14 A 1386 1331 6.42      
15 A 1308 1256 10.21      
16 A 1243 1194 19.43      
17 A 1222 1173 8.53      
18 A 1156 1110 11.04      
19 A 1088 1045 38.83      
20 A 1018 978 1.18      
21 A 941 904 38.67      
22 A 918 882 72.14      
23 A 859 825 123.24      
24 A 809 776 6.12      
25 A 737 708 7.60      
26 A 573 550 3.49      
27 A 530 509 1.69      
28 A 407 391 4.39      
29 A 353 339 12.04      
30 A 287 275 15.02      
31 A 269 258 14.67      
32 A 234 225 0.30      
33 A 58 56 1.02      

Unscaled Zero Point Vibrational Energy (zpe) 23891.3 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 22938.0 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 B3PW91/6-31+G**
ABC
0.16217 0.11463 0.07219

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.117 1.310 0.017
C2 1.423 -1.185 -0.251
C3 0.643 -0.034 0.378
C4 -0.863 -0.138 0.057
O5 -1.433 1.037 -0.222
O6 -1.472 -1.182 0.087
H7 1.576 1.310 -0.889
H8 1.772 1.683 0.694
H9 0.968 -2.141 0.018
H10 1.413 -1.108 -1.344
H11 0.698 -0.122 1.471
H12 2.463 -1.176 0.089
H13 -0.688 1.686 -0.187

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.52761.47012.45312.57553.59391.01591.01333.45382.78982.08302.82781.8549
C22.52761.52582.53293.61872.91492.58003.03991.09211.09612.14961.09443.5642
C31.47011.52581.54352.41212.42412.06982.07912.16192.17061.09772.16802.2475
C42.45312.53291.54351.33571.20882.99003.26572.71392.84312.10673.48441.8490
O52.57553.61872.41211.33572.24083.09403.39493.99043.73632.95824.49160.9888
O63.59392.91492.42411.20882.24084.05644.37022.62313.22202.78383.93542.9861
H71.01592.58002.06982.99003.09404.05641.63883.61962.46532.89702.81522.3998
H81.01333.03992.07913.26573.39494.37021.63883.96573.47432.23903.00332.6125
H93.45381.09212.16192.71393.99042.62313.61963.96571.76662.50251.78084.1752
H102.78981.09612.17062.84313.73633.22202.46533.47431.76663.06741.77783.6822
H112.08302.14961.09772.10672.95822.78382.89702.23902.50253.06742.47732.8177
H122.82781.09442.16803.48444.49163.93542.81523.00331.78081.77782.47734.2659
H131.85493.56422.24751.84900.98882.98612.39982.61254.17523.68222.81774.2659

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.050 N1 C3 C4 108.956
N1 C3 H11 107.537 C2 C3 C4 111.221
C2 C3 H11 108.949 C3 N1 H7 111.421
C3 N1 H8 112.391 C3 C2 H9 110.242
C3 C2 H10 110.696 C3 C2 H12 110.589
C3 C4 O5 113.613 C3 C4 O6 123.002
C4 C3 H11 104.540 C4 O5 H13 104.405
O5 C4 O6 123.361 H7 N1 H8 107.721
H9 C2 H10 107.667 H9 C2 H12 109.063
H10 C2 H12 108.508
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.706      
2 C -0.567      
3 C -0.032      
4 C 0.424      
5 O -0.431      
6 O -0.453      
7 H 0.318      
8 H 0.315      
9 H 0.208      
10 H 0.169      
11 H 0.194      
12 H 0.167      
13 H 0.395      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  5.355 2.061 0.386 5.751
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.039 -0.219 -0.180
y -0.219 -37.751 0.412
z -0.180 0.412 -33.857
Traceless
 xyz
x -4.235 -0.219 -0.180
y -0.219 -0.803 0.412
z -0.180 0.412 5.038
Polar
3z2-r210.077
x2-y2-2.288
xy-0.219
xz-0.180
yz0.412


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.117 0.256 0.084
y 0.256 8.424 -0.111
z 0.084 -0.111 6.045


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000