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

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-323.621205
Energy at 298.15K-323.631074
Nuclear repulsion energy247.491103
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 B3PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3604 3448 6.74      
2 A 3512 3360 1.56      
3 A 3168 3031 740.56      
4 A 3150 3013 6.31      
5 A 3108 2974 21.28      
6 A 3050 2918 8.04      
7 A 3032 2901 80.24      
8 A 1882 1800 377.55      
9 A 1690 1617 34.99      
10 A 1538 1472 83.84      
11 A 1526 1460 205.38      
12 A 1486 1422 8.20      
13 A 1432 1370 11.20      
14 A 1380 1321 10.63      
15 A 1329 1271 3.49      
16 A 1311 1255 26.47      
17 A 1266 1211 64.71      
18 A 1158 1108 5.76      
19 A 1096 1048 5.50      
20 A 1038 993 10.45      
21 A 1018 974 110.27      
22 A 967 925 8.68      
23 A 927 887 27.97      
24 A 879 841 41.41      
25 A 820 784 20.77      
26 A 697 667 10.75      
27 A 578 553 2.82      
28 A 493 471 10.10      
29 A 413 395 14.01      
30 A 337 323 7.71      
31 A 297 284 9.20      
32 A 204 195 3.95      
33 A 90 87 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 24238.2 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 23188.7 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 B3PW91/6-31G*
ABC
0.24015 0.08394 0.06635

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.898 0.578 0.143
C2 1.366 -0.697 -0.361
C3 0.013 -0.997 0.289
C4 -1.083 0.040 0.022
O5 -0.674 1.312 -0.051
O6 -2.246 -0.270 -0.087
H7 2.675 0.905 -0.424
H8 2.242 0.474 1.095
H9 2.051 -1.542 -0.199
H10 1.237 -0.592 -1.445
H11 -0.369 -1.963 -0.050
H12 0.139 -1.075 1.379
H13 0.321 1.333 0.053

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.47142.46033.03112.68104.23531.01641.01782.15372.08033.41072.71191.7495
C21.47141.53022.58572.87963.64672.07022.06401.10001.09602.16962.16262.3199
C32.46031.53021.53222.43242.40233.34822.78882.16542.16011.09301.10032.3613
C43.03112.58571.53221.33791.20823.88203.52023.51772.81622.12792.13971.9088
O52.68102.87962.43241.33792.23023.39413.24283.94873.03583.28912.89891.0009
O64.23533.64672.40231.20822.23025.07034.69934.48243.75162.52792.91243.0294
H71.01642.07023.34823.88203.39415.07031.63782.53552.31334.19893.68842.4393
H81.01782.06402.78883.52023.24284.69931.63782.40342.93193.75002.62672.3475
H92.15371.10002.16543.51773.94874.48242.53552.40341.76552.46072.52323.3644
H102.08031.09602.16012.81623.03583.75162.31332.93191.76552.53043.06802.6045
H113.41072.16961.09302.12793.28912.52794.19893.75002.46072.53041.75753.3687
H122.71192.16261.10032.13972.89892.91243.68842.62672.52323.06801.75752.7547
H131.74952.31992.36131.90881.00093.02942.43932.34753.36442.60453.36872.7547

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 110.087 N1 C2 H9 112.969
N1 C2 H10 107.339 C2 N1 H7 111.332
C2 N1 H8 110.712 C2 C3 C4 115.207
C2 C3 H11 110.495 C2 C3 H12 109.514
C3 C2 H9 109.747 C3 C2 H10 109.566
C3 C4 O5 115.718 C3 C4 O6 122.033
C4 C3 H11 107.113 C4 C3 H12 107.612
C4 O5 H13 108.543 O5 C4 O6 122.230
H7 N1 H8 107.256 H9 C2 H10 107.020
H11 C3 H12 106.505
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.800      
2 C -0.219      
3 C -0.443      
4 C 0.604      
5 O -0.603      
6 O -0.468      
7 H 0.348      
8 H 0.342      
9 H 0.175      
10 H 0.198      
11 H 0.211      
12 H 0.194      
13 H 0.461      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  6.620 -1.230 0.600 6.760
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.012 1.776 -0.227
y 1.776 -36.822 0.088
z -0.227 0.088 -33.015
Traceless
 xyz
x -3.093 1.776 -0.227
y 1.776 -1.309 0.088
z -0.227 0.088 4.402
Polar
3z2-r28.804
x2-y2-1.189
xy1.776
xz-0.227
yz0.088


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.887 0.448 0.118
y 0.448 6.354 -0.017
z 0.118 -0.017 5.144


<r2> (average value of r2) Å2
<r2> 171.093
(<r2>)1/2 13.080