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

using model chemistry: B3LYP/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 B3LYP/6-31G**
 hartrees
Energy at 0K-323.757700
Energy at 298.15K-323.767537
Nuclear repulsion energy246.836618
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 B3LYP/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 3592 3451 4.89      
2 A 3503 3366 0.59      
3 A 3238 3111 709.06      
4 A 3133 3010 7.69      
5 A 3090 2969 23.21      
6 A 3035 2916 8.61      
7 A 3018 2900 67.74      
8 A 1864 1791 363.95      
9 A 1662 1596 29.18      
10 A 1527 1467 15.38      
11 A 1506 1447 255.96      
12 A 1477 1419 6.47      
13 A 1424 1368 12.76      
14 A 1371 1317 7.95      
15 A 1319 1267 2.76      
16 A 1299 1248 24.88      
17 A 1252 1203 72.56      
18 A 1149 1104 5.42      
19 A 1075 1033 5.50      
20 A 1028 988 8.31      
21 A 999 960 100.27      
22 A 954 917 10.22      
23 A 917 881 23.53      
24 A 867 833 46.27      
25 A 813 781 18.48      
26 A 693 666 10.66      
27 A 573 550 3.05      
28 A 492 472 10.06      
29 A 410 394 12.63      
30 A 334 321 7.58      
31 A 287 275 8.82      
32 A 203 195 4.58      
33 A 89 86 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 24094.3 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 23149.8 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 B3LYP/6-31G**
ABC
0.23865 0.08341 0.06591

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.907 0.582 0.140
C2 1.369 -0.701 -0.361
C3 0.013 -0.998 0.293
C4 -1.087 0.039 0.023
O5 -0.680 1.317 -0.049
O6 -2.250 -0.273 -0.091
H7 2.683 0.903 -0.432
H8 2.255 0.478 1.090
H9 2.053 -1.545 -0.195
H10 1.241 -0.600 -1.444
H11 -0.369 -1.965 -0.042
H12 0.140 -1.071 1.382
H13 0.310 1.344 0.055

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.47782.47083.04462.69584.24981.01611.01772.15802.08553.42022.71931.7711
C21.47781.53472.59372.89263.65432.07442.06891.09901.09522.17312.16502.3397
C32.47081.53471.53592.44042.40703.35682.80032.16712.16411.09201.09942.3727
C43.04462.59371.53591.34251.20953.89433.53583.52322.82492.12962.14161.9117
O52.69582.89262.44041.34252.23453.41023.25843.95963.05183.29622.90170.9961
O64.24983.65432.40701.20952.23455.08274.71744.48773.75852.53002.91863.0314
H71.01612.07443.35683.89433.41025.08271.63692.53922.31644.20643.69482.4620
H81.01772.06892.80033.53583.25844.71741.63692.40542.93503.75982.63752.3675
H92.15801.09902.16713.52323.95964.48772.53922.40541.76392.46262.52403.3829
H102.08551.09522.16412.82493.05183.75852.31642.93501.76392.53413.06972.6255
H113.42022.17311.09202.12963.29622.53004.20643.75982.46262.53411.75723.3790
H122.71932.16501.09942.14162.90172.91863.69482.63752.52403.06971.75722.7605
H131.77112.33972.37271.91170.99613.03142.46202.36753.38292.62553.37902.7605

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 110.192 N1 C2 H9 112.926
N1 C2 H10 107.357 C2 N1 H7 111.210
C2 N1 H8 110.645 C2 C3 C4 115.274
C2 C3 H11 110.513 C2 C3 H12 109.443
C3 C2 H9 109.631 C3 C2 H10 109.616
C3 C4 O5 115.789 C3 C4 O6 122.052
C4 C3 H11 107.053 C4 C3 H12 107.556
C4 O5 H13 108.759 O5 C4 O6 122.141
H7 N1 H8 107.190 H9 C2 H10 107.009
H11 C3 H12 106.611
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.641      
2 C -0.083      
3 C -0.277      
4 C 0.576      
5 O -0.502      
6 O -0.461      
7 H 0.267      
8 H 0.263      
9 H 0.108      
10 H 0.132      
11 H 0.139      
12 H 0.128      
13 H 0.351      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  6.508 -1.179 0.594 6.640
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.278 1.712 -0.271
y 1.712 -36.921 0.094
z -0.271 0.094 -33.201
Traceless
 xyz
x -3.218 1.712 -0.271
y 1.712 -1.181 0.094
z -0.271 0.094 4.399
Polar
3z2-r28.798
x2-y2-1.358
xy1.712
xz-0.271
yz0.094


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.996 0.480 0.122
y 0.480 6.428 -0.014
z 0.122 -0.014 5.212


<r2> (average value of r2) Å2
<r2> 172.146
(<r2>)1/2 13.120