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

using model chemistry: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-323.609234
Energy at 298.15K-323.619058
Nuclear repulsion energy247.966733
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 B1B95/6-31G*
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 3612 3429 6.38      
2 A 3520 3342 1.36      
3 A 3244 3080 683.64      
4 A 3162 3001 6.07      
5 A 3118 2960 20.67      
6 A 3061 2906 7.05      
7 A 3042 2887 68.19      
8 A 1896 1800 374.52      
9 A 1688 1602 35.38      
10 A 1534 1457 19.05      
11 A 1512 1436 292.35      
12 A 1483 1408 9.11      
13 A 1430 1358 10.19      
14 A 1380 1310 9.14      
15 A 1327 1259 5.05      
16 A 1313 1246 23.42      
17 A 1268 1203 52.44      
18 A 1156 1097 5.84      
19 A 1101 1045 6.10      
20 A 1036 983 12.18      
21 A 996 946 83.00      
22 A 963 914 40.19      
23 A 921 874 21.98      
24 A 880 836 40.60      
25 A 821 779 23.16      
26 A 695 660 10.66      
27 A 579 549 2.89      
28 A 486 462 10.15      
29 A 408 388 15.25      
30 A 331 315 6.96      
31 A 290 275 8.11      
32 A 198 188 3.68      
33 A 88 83 0.44      

Unscaled Zero Point Vibrational Energy (zpe) 24268.7 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 23038.3 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 B1B95/6-31G*
ABC
0.24207 0.08393 0.06659

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.906 0.568 0.151
C2 1.356 -0.687 -0.374
C3 0.016 -0.988 0.292
C4 -1.082 0.039 0.025
O5 -0.679 1.310 -0.056
O6 -2.241 -0.275 -0.084
H7 2.687 0.892 -0.411
H8 2.250 0.438 1.098
H9 2.034 -1.541 -0.245
H10 1.208 -0.555 -1.450
H11 -0.366 -1.956 -0.033
H12 0.156 -1.054 1.380
H13 0.310 1.338 0.059

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.46742.45143.03672.69654.23791.01491.01642.15002.07633.40102.68411.7741
C21.46741.52602.57482.86843.63212.06512.05751.09811.09422.16632.15682.3201
C32.45141.52601.52702.42522.39703.34012.76982.15992.15511.09101.09842.3558
C43.03672.57481.52701.33561.20563.88853.52343.50402.78822.12062.13591.9044
O52.69652.86842.42521.33562.22533.40983.26633.93962.99693.28092.88870.9957
O64.23793.63212.39701.20562.22535.07444.69844.46143.72062.51902.91433.0214
H71.01492.06513.34013.88853.40985.07441.63482.52432.31494.19203.66032.4636
H81.01642.05752.76983.52343.26634.69841.63482.40192.92683.72252.58712.3779
H92.15001.09812.15993.50403.93964.46142.52432.40191.76272.44482.53083.3697
H102.07631.09422.15512.78822.99693.72062.31492.92681.76272.54013.06052.5822
H113.40102.16631.09102.12063.28092.51904.19203.72252.44482.54011.75533.3643
H122.68412.15681.09842.13592.88872.91433.66032.58712.53083.06051.75532.7371
H131.77412.32012.35581.90440.99573.02142.46362.37793.36972.58223.36432.7371

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 109.941 N1 C2 H9 113.084
N1 C2 H10 107.401 C2 N1 H7 111.283
C2 N1 H8 110.552 C2 C3 C4 114.997
C2 C3 H11 110.644 C2 C3 H12 109.455
C3 C2 H9 109.716 C3 C2 H10 109.563
C3 C4 O5 115.654 C3 C4 O6 122.168
C4 C3 H11 107.009 C4 C3 H12 107.772
C4 O5 H13 108.669 O5 C4 O6 122.167
H7 N1 H8 107.183 H9 C2 H10 107.029
H11 C3 H12 106.591
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.786      
2 C -0.210      
3 C -0.426      
4 C 0.593      
5 O -0.598      
6 O -0.461      
7 H 0.342      
8 H 0.336      
9 H 0.168      
10 H 0.192      
11 H 0.204      
12 H 0.188      
13 H 0.458      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  6.515 -1.220 0.596 6.655
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.986 1.648 -0.224
y 1.648 -36.805 0.062
z -0.224 0.062 -33.046
Traceless
 xyz
x -3.060 1.648 -0.224
y 1.648 -1.289 0.062
z -0.224 0.062 4.349
Polar
3z2-r28.698
x2-y2-1.181
xy1.648
xz-0.224
yz0.062


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.859 0.458 0.121
y 0.458 6.320 -0.019
z 0.121 -0.019 5.139


<r2> (average value of r2) Å2
<r2> 198.169
(<r2>)1/2 14.077