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

using model chemistry: HF/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-321.893948
Energy at 298.15K-321.903973
Nuclear repulsion energy248.364601
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/6-31+G**
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 3915 3540 487.61      
2 A 3837 3469 13.76      
3 A 3748 3389 9.37      
4 A 3284 2969 11.05      
5 A 3238 2928 33.96      
6 A 3186 2881 14.46      
7 A 3178 2874 56.52      
8 A 2020 1827 533.04      
9 A 1798 1626 48.56      
10 A 1645 1487 2.46      
11 A 1591 1439 21.07      
12 A 1563 1413 383.07      
13 A 1548 1399 41.03      
14 A 1497 1354 15.54      
15 A 1430 1293 4.34      
16 A 1413 1277 5.22      
17 A 1356 1226 48.88      
18 A 1248 1128 6.49      
19 A 1166 1054 15.61      
20 A 1103 997 20.97      
21 A 1051 950 19.56      
22 A 987 893 63.28      
23 A 945 854 71.24      
24 A 900 814 46.89      
25 A 865 782 67.66      
26 A 764 690 19.86      
27 A 621 561 7.83      
28 A 525 475 11.10      
29 A 415 375 17.29      
30 A 336 304 11.01      
31 A 273 247 3.06      
32 A 203 183 5.08      
33 A 83 75 1.84      

Unscaled Zero Point Vibrational Energy (zpe) 25865.0 cm-1
Scaled (by 0.9042) Zero Point Vibrational Energy (zpe) 23387.2 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/6-31+G**
ABC
0.24358 0.08285 0.06607

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.947 0.566 0.124
C2 1.361 -0.680 -0.369
C3 0.025 -0.963 0.321
C4 -1.089 0.032 0.027
O5 -0.743 1.307 -0.032
O6 -2.217 -0.311 -0.115
H7 2.692 0.884 -0.463
H8 2.315 0.459 1.049
H9 2.017 -1.535 -0.224
H10 1.208 -0.575 -1.438
H11 -0.346 -1.939 0.038
H12 0.168 -0.976 1.400
H13 0.201 1.418 0.073

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.46232.46413.08442.79454.26201.00021.00152.13072.07063.39732.67841.9436
C21.46231.53002.58192.91303.60592.05582.05381.08751.08482.16012.15442.4372
C32.46411.53001.52212.42202.37523.33772.79222.14252.15421.08171.08902.3999
C43.08442.58191.52211.32251.18723.90703.57943.48762.79062.10612.11691.8937
O52.79452.91302.42201.32252.18983.48763.35203.96573.05263.27062.84510.9559
O64.26203.60592.37521.18722.18985.06434.74154.40853.68042.48492.90272.9777
H71.00022.05583.33773.90703.48765.06431.61552.52302.29864.17763.64752.6036
H81.00152.05382.79223.57943.35204.74151.61552.38452.91223.72212.60622.5180
H92.13071.08752.14253.48763.96574.40852.52302.38451.74692.41142.52313.4789
H102.07061.08482.15422.79063.05263.68042.29862.91221.74692.54013.04882.6953
H113.39732.16011.08172.10613.27062.48494.17763.72212.41142.54011.74543.4010
H122.67842.15441.08902.11692.84512.90273.64752.60622.52313.04881.74542.7375
H131.94362.43722.39991.89370.95592.97772.60362.51803.47892.69533.40102.7375

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 110.847 N1 C2 H9 112.534
N1 C2 H10 107.843 C2 N1 H7 111.828
C2 N1 H8 111.573 C2 C3 C4 115.545
C2 C3 H11 110.420 C2 C3 H12 109.539
C3 C2 H9 108.695 C3 C2 H10 109.768
C3 C4 O5 116.563 C3 C4 O6 122.003
C4 C3 H11 106.746 C4 C3 H12 107.165
C4 O5 H13 111.424 O5 C4 O6 121.418
H7 N1 H8 107.619 H9 C2 H10 107.061
H11 C3 H12 107.043
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.794      
2 C -0.090      
3 C -0.211      
4 C 0.520      
5 O -0.566      
6 O -0.549      
7 H 0.311      
8 H 0.309      
9 H 0.134      
10 H 0.148      
11 H 0.181      
12 H 0.163      
13 H 0.445      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  6.759 -1.327 0.653 6.919
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.422 1.188 -0.725
y 1.188 -37.885 -0.063
z -0.725 -0.063 -33.856
Traceless
 xyz
x -5.551 1.188 -0.725
y 1.188 -0.247 -0.063
z -0.725 -0.063 5.798
Polar
3z2-r211.595
x2-y2-3.536
xy1.188
xz-0.725
yz-0.063


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.060 0.432 0.146
y 0.432 6.668 0.017
z 0.146 0.017 5.610


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