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

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-323.703145
Energy at 298.15K-323.713034
Nuclear repulsion energy247.873062
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 B3PW91/6-311G*
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 3610 3475 4.80      
2 A 3527 3395 0.81      
3 A 3204 3085 638.14      
4 A 3130 3014 9.26      
5 A 3090 2975 25.09      
6 A 3035 2922 9.58      
7 A 3020 2907 72.65      
8 A 1865 1796 405.65      
9 A 1703 1639 43.75      
10 A 1525 1468 81.29      
11 A 1510 1453 208.77      
12 A 1472 1417 8.31      
13 A 1426 1373 8.50      
14 A 1373 1322 9.04      
15 A 1326 1276 4.35      
16 A 1303 1254 14.96      
17 A 1252 1206 87.46      
18 A 1159 1116 8.79      
19 A 1088 1048 6.00      
20 A 1032 993 12.38      
21 A 1013 976 110.70      
22 A 964 928 7.72      
23 A 922 888 27.01      
24 A 874 841 44.46      
25 A 818 787 22.91      
26 A 701 674 10.84      
27 A 579 558 2.57      
28 A 492 473 8.88      
29 A 413 398 14.09      
30 A 338 325 6.58      
31 A 297 286 6.96      
32 A 204 196 4.10      
33 A 88 85 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 24175.8 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 23274.0 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 B3PW91/6-311G*
ABC
0.24114 0.08403 0.06648

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.901 0.575 0.143
C2 1.362 -0.697 -0.362
C3 0.012 -0.994 0.289
C4 -1.085 0.039 0.023
O5 -0.673 1.309 -0.050
O6 -2.241 -0.268 -0.088
H7 2.667 0.907 -0.431
H8 2.252 0.472 1.089
H9 2.045 -1.541 -0.203
H10 1.232 -0.590 -1.443
H11 -0.370 -1.961 -0.043
H12 0.137 -1.069 1.378
H13 0.314 1.340 0.056

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.47092.46063.03692.68384.23381.01291.01442.14942.07843.40972.70951.7643
C21.47091.52802.58432.87403.63892.06932.06431.09771.09412.16792.15992.3284
C32.46061.52801.53022.42622.39693.34442.79402.16252.15661.09111.09862.3651
C43.03692.58431.53021.33711.20093.87863.53013.51402.81312.12472.13461.9110
O52.68382.87402.42621.33712.22393.38583.24893.94133.02853.28352.88940.9931
O64.23383.63892.39691.20092.22395.05884.70334.47293.74182.52372.90623.0222
H71.01292.06933.34443.87863.38585.05881.63462.53662.30794.19563.68492.4418
H81.01442.06432.79403.53013.24894.70331.63462.40072.92863.75132.63232.3620
H92.14941.09772.16253.51403.94134.47292.53662.40071.76152.45672.52283.3714
H102.07841.09412.15662.81313.02853.74182.30792.92861.76152.53103.06342.6100
H113.40972.16791.09112.12473.28352.52374.19563.75132.45672.53101.75243.3724
H122.70952.15991.09862.13462.88942.90623.68492.63232.52283.06341.75242.7535
H131.76432.32842.36511.91100.99313.02222.44182.36203.37142.61003.37242.7535

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 110.257 N1 C2 H9 112.803
N1 C2 H10 107.334 C2 N1 H7 111.510
C2 N1 H8 110.986 C2 C3 C4 115.359
C2 C3 H11 110.621 C2 C3 H12 109.550
C3 C2 H9 109.807 C3 C2 H10 109.555
C3 C4 O5 115.435 C3 C4 O6 122.263
C4 C3 H11 107.114 C4 C3 H12 107.449
C4 O5 H13 109.304 O5 C4 O6 122.290
H7 N1 H8 107.475 H9 C2 H10 106.966
H11 C3 H12 106.317
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.823      
2 C -0.324      
3 C -0.585      
4 C 0.470      
5 O -0.503      
6 O -0.345      
7 H 0.358      
8 H 0.348      
9 H 0.231      
10 H 0.249      
11 H 0.260      
12 H 0.244      
13 H 0.420      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  6.609 -1.306 0.582 6.762
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.736 1.870 -0.287
y 1.870 -37.439 0.074
z -0.287 0.074 -33.432
Traceless
 xyz
x -3.301 1.870 -0.287
y 1.870 -1.355 0.074
z -0.287 0.074 4.656
Polar
3z2-r29.311
x2-y2-1.297
xy1.870
xz-0.287
yz0.074


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.227 0.424 0.089
y 0.424 6.712 -0.025
z 0.089 -0.025 5.445


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