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All results from a given calculation for NH2CH2CH2COOH (β–alanine)

using model chemistry: HF/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 HF/6-31G
 hartrees
Energy at 0K-321.715309
Energy at 298.15K-321.725399
Nuclear repulsion energy247.669617
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/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 3866 3491 14.54      
2 A 3758 3393 0.60      
3 A 3696 3337 492.73      
4 A 3294 2974 7.49      
5 A 3258 2942 27.98      
6 A 3197 2886 16.34      
7 A 3189 2880 48.76      
8 A 1951 1761 410.37      
9 A 1847 1667 67.38      
10 A 1677 1514 3.29      
11 A 1628 1470 10.91      
12 A 1563 1412 18.73      
13 A 1520 1372 204.16      
14 A 1514 1367 214.51      
15 A 1446 1305 6.47      
16 A 1430 1291 1.96      
17 A 1358 1226 84.28      
18 A 1273 1149 13.63      
19 A 1170 1057 17.95      
20 A 1091 985 12.96      
21 A 1055 953 27.78      
22 A 984 888 94.94      
23 A 958 865 166.56      
24 A 912 823 130.68      
25 A 876 791 52.38      
26 A 753 680 15.38      
27 A 613 554 7.26      
28 A 531 479 9.72      
29 A 422 381 16.06      
30 A 347 313 5.94      
31 A 292 264 4.67      
32 A 212 192 7.22      
33 A 87 78 0.84      

Unscaled Zero Point Vibrational Energy (zpe) 25883.1 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 23369.9 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/6-31G
ABC
0.23936 0.08369 0.06631

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.937 0.547 0.120
C2 1.345 -0.706 -0.368
C3 0.006 -0.984 0.324
C4 -1.077 0.034 0.029
O5 -0.682 1.316 -0.026
O6 -2.235 -0.276 -0.121
H7 2.608 0.959 -0.492
H8 2.283 0.505 1.057
H9 2.002 -1.557 -0.219
H10 1.192 -0.605 -1.435
H11 -0.376 -1.951 0.034
H12 0.155 -1.010 1.401
H13 0.272 1.438 0.071

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.46932.47213.05872.73394.25930.99780.99922.13162.07353.40552.69081.8891
C21.46931.53222.56302.88363.61382.09362.09211.08551.08242.16172.15382.4370
C32.47211.53221.51512.42612.39233.34822.81692.14612.15521.08011.08742.4490
C43.05872.56301.51511.34291.20833.83533.54473.47432.77502.10522.11841.9474
O52.73392.88362.42611.34292.22613.34293.25903.93653.03153.28242.85420.9668
O64.25933.61382.39231.20832.22615.01214.73384.42743.68492.50752.92713.0429
H70.99782.09363.34823.83533.34295.01211.64672.60182.31054.20133.67162.4508
H80.99922.09212.81693.54473.25904.73381.64672.44052.93763.76132.63472.4259
H92.13161.08552.14613.47433.93654.42742.60182.44051.74392.42362.51713.4704
H102.07351.08242.15522.77503.03153.68492.31052.93761.74392.53573.04702.6994
H113.40552.16171.08012.10523.28242.50754.20133.76132.42362.53571.74283.4506
H122.69082.15381.08742.11842.85422.92713.67162.63472.51713.04701.74282.7880
H131.88912.43702.44901.94740.96683.04292.45082.42593.47042.69943.45062.7880

picture of β–alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 110.883 N1 C2 H9 112.229
N1 C2 H10 107.741 C2 N1 H7 114.774
C2 N1 H8 114.546 C2 C3 C4 114.506
C2 C3 H11 110.486 C2 C3 H12 109.435
C3 C2 H9 108.944 C3 C2 H10 109.837
C3 C4 O5 116.050 C3 C4 O6 122.508
C4 C3 H11 107.235 C4 C3 H12 107.844
C4 O5 H13 113.951 O5 C4 O6 121.425
H7 N1 H8 111.093 H9 C2 H10 107.116
H11 C3 H12 107.036
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.909      
2 C -0.130      
3 C -0.420      
4 C 0.775      
5 O -0.756      
6 O -0.545      
7 H 0.352      
8 H 0.344      
9 H 0.177      
10 H 0.196      
11 H 0.221      
12 H 0.202      
13 H 0.493      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  7.368 -1.701 0.721 7.596
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.106 2.311 -0.928
y 2.311 -37.967 0.034
z -0.928 0.034 -33.554
Traceless
 xyz
x -6.346 2.311 -0.928
y 2.311 -0.137 0.034
z -0.928 0.034 6.483
Polar
3z2-r212.965
x2-y2-4.140
xy2.311
xz-0.928
yz0.034


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.053 0.664 0.204
y 0.664 5.651 0.009
z 0.204 0.009 4.691


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