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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-321.883916
Energy at 298.15K-321.893970
Nuclear repulsion energy248.635140
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 3911 3531 465.41      
2 A 3834 3460 9.46      
3 A 3745 3380 8.66      
4 A 3286 2966 11.93      
5 A 3239 2924 36.65      
6 A 3187 2877 11.77      
7 A 3176 2867 64.02      
8 A 2050 1851 475.27      
9 A 1801 1626 43.95      
10 A 1649 1488 2.46      
11 A 1596 1440 33.98      
12 A 1580 1426 423.09      
13 A 1554 1403 11.09      
14 A 1501 1355 6.38      
15 A 1435 1295 4.69      
16 A 1419 1281 7.50      
17 A 1364 1231 48.57      
18 A 1249 1127 6.36      
19 A 1168 1055 14.40      
20 A 1112 1004 20.26      
21 A 1054 951 21.71      
22 A 994 898 65.32      
23 A 949 856 58.26      
24 A 903 815 48.26      
25 A 869 784 67.22      
26 A 764 690 20.73      
27 A 623 562 8.19      
28 A 525 474 11.35      
29 A 419 378 17.79      
30 A 344 310 10.84      
31 A 278 251 3.28      
32 A 207 187 4.62      
33 A 85 77 1.29      

Unscaled Zero Point Vibrational Energy (zpe) 25933.6 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 23407.7 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
0.24417 0.08312 0.06628

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 1.942 0.565 0.130
C2 1.359 -0.677 -0.373
C3 0.024 -0.965 0.317
C4 -1.089 0.033 0.027
O5 -0.734 1.305 -0.037
O6 -2.216 -0.306 -0.108
H7 2.696 0.877 -0.448
H8 2.303 0.446 1.057
H9 2.016 -1.534 -0.239
H10 1.202 -0.562 -1.440
H11 -0.349 -1.939 0.030
H12 0.169 -0.985 1.396
H13 0.211 1.406 0.069

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.46192.46083.07852.78124.25531.00021.00152.13262.07013.39572.67291.9252
C21.46191.52972.57962.90203.60412.05162.04851.08801.08492.16132.15312.4190
C32.46081.52971.52262.41932.37353.33432.78082.14522.15281.08161.08902.3909
C43.07852.57961.52261.32171.18563.90633.56833.48812.78422.10622.11941.8903
O52.78122.90202.41931.32172.19063.48073.34033.95773.03333.26732.84800.9560
O64.25533.60412.37351.18562.19065.06414.72734.40903.67712.48402.90082.9754
H71.00022.05163.33433.90633.48075.06411.61412.51342.29954.17503.63972.5927
H81.00152.04852.78083.56833.34034.72731.61412.38322.90923.71172.59082.5047
H92.13261.08802.14523.48813.95774.40902.51342.38321.74642.41512.52683.4633
H102.07011.08492.15282.78423.03333.67712.29952.90921.74642.54163.04702.6705
H113.39572.16131.08162.10623.26732.48404.17503.71172.41512.54161.74533.3913
H122.67292.15311.08902.11942.84802.90083.63972.59082.52683.04701.74532.7339
H131.92522.41902.39091.89030.95602.97542.59272.50473.46332.67053.39132.7339

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 110.668 N1 C2 H9 112.691
N1 C2 H10 107.831 C2 N1 H7 111.499
C2 N1 H8 111.144 C2 C3 C4 115.372
C2 C3 H11 110.544 C2 C3 H12 109.461
C3 C2 H9 108.902 C3 C2 H10 109.679
C3 C4 O5 116.370 C3 C4 O6 121.930
C4 C3 H11 106.727 C4 C3 H12 107.325
C4 O5 H13 111.157 O5 C4 O6 121.685
H7 N1 H8 107.491 H9 C2 H10 106.972
H11 C3 H12 107.042
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 -0.755      
2 C -0.068      
3 C -0.341      
4 C 0.765      
5 O -0.617      
6 O -0.550      
7 H 0.293      
8 H 0.286      
9 H 0.126      
10 H 0.145      
11 H 0.171      
12 H 0.148      
13 H 0.397      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  6.609 -1.238 0.641 6.754
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.002 1.223 -0.594
y 1.223 -37.242 0.007
z -0.594 0.007 -33.330
Traceless
 xyz
x -4.716 1.223 -0.594
y 1.223 -0.576 0.007
z -0.594 0.007 5.292
Polar
3z2-r210.584
x2-y2-2.760
xy1.223
xz-0.594
yz0.007


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.199 0.505 0.142
y 0.505 5.879 0.011
z 0.142 0.011 5.007


<r2> (average value of r2) Å2
<r2> 171.855
(<r2>)1/2 13.109