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

using model chemistry: HF/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 HF/6-31G*
 hartrees
Energy at 0K-321.863898
Energy at 298.15K-321.873949
HF Energy-321.863898
Nuclear repulsion energy248.525829
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/6-31G*
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 3849 3459 460.13      
2 A 3819 3431 9.18      
3 A 3734 3355 9.27      
4 A 3303 2968 12.39      
5 A 3261 2930 36.40      
6 A 3205 2879 20.07      
7 A 3197 2873 57.08      
8 A 2053 1844 471.79      
9 A 1832 1646 44.40      
10 A 1664 1495 1.76      
11 A 1613 1449 21.18      
12 A 1589 1428 440.79      
13 A 1564 1405 10.46      
14 A 1511 1358 5.91      
15 A 1446 1299 4.24      
16 A 1427 1282 6.73      
17 A 1369 1230 54.91      
18 A 1257 1130 6.51      
19 A 1172 1053 14.35      
20 A 1125 1011 24.25      
21 A 1061 953 25.14      
22 A 1003 901 67.61      
23 A 954 858 49.61      
24 A 903 811 46.05      
25 A 870 782 73.78      
26 A 765 687 21.81      
27 A 624 560 8.50      
28 A 525 472 11.61      
29 A 418 375 18.95      
30 A 344 309 11.55      
31 A 282 253 3.22      
32 A 208 187 4.16      
33 A 86 77 1.30      

Unscaled Zero Point Vibrational Energy (zpe) 26013.5 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 23373.1 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/6-31G*
ABC
0.24393 0.08304 0.06624

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.943 0.566 0.130
C2 1.359 -0.677 -0.375
C3 0.025 -0.964 0.319
C4 -1.089 0.032 0.027
O5 -0.738 1.306 -0.037
O6 -2.216 -0.309 -0.109
H7 2.701 0.874 -0.448
H8 2.308 0.440 1.056
H9 2.017 -1.532 -0.244
H10 1.199 -0.559 -1.440
H11 -0.346 -1.939 0.037
H12 0.175 -0.979 1.397
H13 0.211 1.408 0.070

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.46282.46003.08052.78614.25691.00161.00282.13242.06983.39472.66811.9270
C21.46281.53012.58022.90553.60382.05192.04811.08741.08422.16122.15262.4214
C32.46001.53011.52332.42102.37443.33492.77942.14642.15371.08141.08872.3924
C43.08052.58021.52331.32271.18543.91123.57323.48892.78232.10732.12101.8936
O52.78612.90552.42101.32272.19083.48993.34973.96103.03333.26992.84780.9602
O64.25693.60382.37441.18542.19085.06864.73174.40883.67452.48542.90442.9788
H71.00162.05193.33493.91123.48995.06861.61312.50952.30014.17523.63572.5987
H81.00282.04812.77943.57323.34974.73171.61312.38012.90823.70752.58522.5112
H92.13241.08742.14643.48893.96104.40882.50952.38011.74612.41462.52893.4654
H102.06981.08422.15372.78233.03333.67452.30012.90821.74612.54553.04642.6699
H113.39472.16121.08142.10733.26992.48544.17523.70752.41462.54551.74453.3940
H122.66812.15261.08872.12102.84782.90443.63572.58522.52893.04641.74452.7317
H131.92702.42142.39241.89360.96022.97882.59872.51123.46542.66993.39402.7317

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 110.537 N1 C2 H9 112.645
N1 C2 H10 107.778 C2 N1 H7 111.353
C2 N1 H8 110.961 C2 C3 C4 115.348
C2 C3 H11 110.522 C2 C3 H12 109.406
C3 C2 H9 108.999 C3 C2 H10 109.757
C3 C4 O5 116.386 C3 C4 O6 121.965
C4 C3 H11 106.775 C4 C3 H12 107.415
C4 O5 H13 111.090 O5 C4 O6 121.632
H7 N1 H8 107.183 H9 C2 H10 107.034
H11 C3 H12 107.008
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.898      
2 C -0.166      
3 C -0.449      
4 C 0.769      
5 O -0.729      
6 O -0.549      
7 H 0.365      
8 H 0.356      
9 H 0.175      
10 H 0.193      
11 H 0.220      
12 H 0.195      
13 H 0.519      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  6.628 -1.278 0.643 6.781
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.960 1.190 -0.615
y 1.190 -37.407 -0.005
z -0.615 -0.005 -33.400
Traceless
 xyz
x -4.556 1.190 -0.615
y 1.190 -0.727 -0.005
z -0.615 -0.005 5.283
Polar
3z2-r210.565
x2-y2-2.553
xy1.190
xz-0.615
yz-0.005


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.117 0.501 0.150
y 0.501 5.811 0.010
z 0.150 0.010 4.945


<r2> (average value of r2) Å2
<r2> 172.017
(<r2>)1/2 13.116