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

using model chemistry: HF/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/cc-pVTZ
 hartrees
Energy at 0K-321.996027
Energy at 298.15K-322.005799
Nuclear repulsion energy252.205095
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 HF/cc-pVTZ
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 4025 3663 196.15      
2 A 3814 3471 11.12      
3 A 3727 3392 5.12      
4 A 3268 2975 13.73      
5 A 3218 2929 43.93      
6 A 3175 2890 16.37      
7 A 3162 2878 20.29      
8 A 2019 1837 380.22      
9 A 1797 1636 36.81      
10 A 1617 1472 14.12      
11 A 1607 1462 2.37      
12 A 1542 1404 150.97      
13 A 1537 1399 133.42      
14 A 1509 1373 164.84      
15 A 1443 1313 79.68      
16 A 1336 1216 10.67      
17 A 1321 1202 4.86      
18 A 1248 1136 14.22      
19 A 1180 1074 59.83      
20 A 1098 999 0.88      
21 A 1012 921 36.49      
22 A 950 864 104.82      
23 A 881 802 5.19      
24 A 812 739 9.40      
25 A 788 717 120.98      
26 A 601 547 10.39      
27 A 571 520 1.98      
28 A 440 400 6.46      
29 A 382 347 10.27      
30 A 301 274 17.63      
31 A 289 263 13.67      
32 A 247 225 0.98      
33 A 64 59 1.44      

Unscaled Zero Point Vibrational Energy (zpe) 25490.9 cm-1
Scaled (by 0.9101) Zero Point Vibrational Energy (zpe) 23199.3 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 HF/cc-pVTZ
ABC
0.16680 0.11561 0.07259

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.062 1.359 -0.056
C2 1.484 -1.116 -0.174
C3 0.637 0.029 0.366
C4 -0.846 -0.176 0.048
O5 -1.539 0.932 -0.122
O6 -1.347 -1.243 0.001
H7 1.366 1.360 -1.008
H8 1.817 1.696 0.501
H9 1.116 -2.066 0.180
H10 1.460 -1.132 -1.259
H11 0.678 0.014 1.450
H12 2.513 -0.995 0.142
H13 -0.944 1.670 -0.085

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.51291.45782.45152.63723.54650.99910.99643.43352.79412.05552.77222.0305
C22.51291.52332.52283.65232.83992.61512.91061.07941.08482.13661.08353.6963
C31.45781.52331.53122.40652.38552.04652.04592.15782.15971.08552.14942.3224
C42.45152.52281.53121.31831.17942.89303.28652.72782.81812.08003.45961.8531
O52.63723.65232.40651.31832.18713.06703.49774.01673.81422.86964.49560.9484
O63.54652.83992.38551.17942.18713.89294.34702.60343.07912.78973.87132.9415
H70.99912.61512.04652.89303.06703.89291.61013.63522.50632.88582.86122.5065
H80.99642.91062.04593.28653.49774.34701.61013.84033.34952.24202.80282.8222
H93.43351.07942.15782.72784.01672.60343.63523.84031.74992.47631.76144.2744
H102.79411.08482.15972.81813.81423.07912.50633.34951.74993.04351.75803.8736
H112.05552.13661.08552.08002.86962.78972.88582.24202.47633.04352.46942.7803
H122.77221.08352.14943.45964.49563.87132.86122.80281.76141.75802.46944.3711
H132.03053.69632.32241.85310.94842.94152.50652.82224.27443.87362.78034.3711

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 114.882 N1 C3 C4 110.179
N1 C3 H11 106.931 C2 C3 C4 111.366
C2 C3 H11 108.811 C3 N1 H7 111.439
C3 N1 H8 111.564 C3 C2 H9 110.847
C3 C2 H10 110.680 C3 C2 H12 109.933
C3 C4 O5 115.040 C3 C4 O6 122.768
C4 C3 H11 103.991 C4 O5 H13 108.580
O5 C4 O6 122.149 H7 N1 H8 107.585
H9 C2 H10 107.919 H9 C2 H12 109.048
H10 C2 H12 108.346
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.416      
2 C -0.281      
3 C -0.017      
4 C 0.386      
5 O -0.297      
6 O -0.374      
7 H 0.158      
8 H 0.162      
9 H 0.128      
10 H 0.091      
11 H 0.121      
12 H 0.095      
13 H 0.243      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  4.733 2.469 0.319 5.348
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.512 -1.098 -0.346
y -1.098 -37.878 -0.297
z -0.346 -0.297 -33.466
Traceless
 xyz
x -3.840 -1.098 -0.346
y -1.098 -1.388 -0.297
z -0.346 -0.297 5.229
Polar
3z2-r210.457
x2-y2-1.634
xy-1.098
xz-0.346
yz-0.297


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.074 0.196 0.046
y 0.196 7.495 -0.012
z 0.046 -0.012 5.620


<r2> (average value of r2) Å2
<r2> 156.642
(<r2>)1/2 12.516