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

using model chemistry: HF/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-321.906570
Energy at 298.15K-321.916588
Nuclear repulsion energy248.667479
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(2df,p)
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 3926 3555 428.11      
2 A 3820 3459 9.80      
3 A 3736 3383 7.96      
4 A 3270 2961 12.91      
5 A 3218 2914 34.88      
6 A 3171 2871 9.49      
7 A 3157 2859 61.15      
8 A 2037 1844 458.75      
9 A 1791 1622 35.90      
10 A 1638 1483 2.23      
11 A 1587 1437 19.61      
12 A 1565 1417 371.46      
13 A 1547 1401 20.52      
14 A 1491 1350 7.11      
15 A 1429 1294 3.86      
16 A 1407 1274 6.97      
17 A 1352 1224 50.94      
18 A 1243 1125 6.80      
19 A 1164 1054 12.49      
20 A 1108 1003 15.65      
21 A 1048 949 16.41      
22 A 988 895 50.83      
23 A 942 853 60.17      
24 A 892 808 25.87      
25 A 849 769 68.50      
26 A 767 695 21.11      
27 A 623 564 7.14      
28 A 522 472 10.39      
29 A 414 375 15.85      
30 A 337 305 10.91      
31 A 269 244 3.12      
32 A 201 182 4.81      
33 A 85 77 1.44      

Unscaled Zero Point Vibrational Energy (zpe) 25796.2 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 23358.5 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(2df,p)
ABC
0.24484 0.08276 0.06615

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.952 0.566 0.124
C2 1.359 -0.674 -0.373
C3 0.027 -0.958 0.324
C4 -1.093 0.031 0.028
O5 -0.748 1.304 -0.032
O6 -2.212 -0.314 -0.116
H7 2.711 0.862 -0.454
H8 2.311 0.444 1.050
H9 2.013 -1.533 -0.242
H10 1.195 -0.560 -1.440
H11 -0.342 -1.938 0.052
H12 0.178 -0.961 1.403
H13 0.193 1.407 0.074

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.46122.46343.09352.80354.26290.99891.00032.13172.07043.39632.66721.9502
C21.46121.53002.58252.90943.59832.04732.04471.08841.08552.16122.15202.4260
C32.46341.53001.52342.41762.37133.33482.77652.14362.15331.08161.08922.3838
C43.09352.58251.52341.32071.17953.92363.57823.48832.78252.10712.11901.8843
O52.80352.90942.41761.32072.18363.51233.35663.96443.03833.26812.83690.9526
O64.26293.59832.37131.17952.18365.07274.73204.39953.66412.48272.90492.9634
H70.99892.04733.33483.92363.51235.07271.61152.50372.29984.17273.63142.6295
H81.00032.04472.77653.57823.35664.73201.61152.38092.90743.70232.57852.5226
H92.13171.08842.14363.48833.96444.39952.50372.38091.74712.40722.52983.4720
H102.07041.08552.15332.78253.03833.66412.29982.90741.74712.54703.04622.6765
H113.39632.16121.08162.10713.26812.48274.17273.70232.40722.54701.74643.3870
H122.66722.15201.08922.11902.83692.90493.63142.57852.52983.04621.74642.7152
H131.95022.42602.38381.88430.95262.96342.62952.52263.47202.67653.38702.7152

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 110.863 N1 C2 H9 112.643
N1 C2 H10 107.867 C2 N1 H7 111.262
C2 N1 H8 110.950 C2 C3 C4 115.515
C2 C3 H11 110.517 C2 C3 H12 109.345
C3 C2 H9 108.739 C3 C2 H10 109.662
C3 C4 O5 116.255 C3 C4 O6 122.127
C4 C3 H11 106.743 C4 C3 H12 107.231
C4 O5 H13 110.928 O5 C4 O6 121.604
H7 N1 H8 107.429 H9 C2 H10 106.964
H11 C3 H12 107.119
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.671      
2 C -0.152      
3 C -0.351      
4 C 0.581      
5 O -0.522      
6 O -0.439      
7 H 0.284      
8 H 0.278      
9 H 0.135      
10 H 0.153      
11 H 0.174      
12 H 0.152      
13 H 0.378      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  6.289 -1.080 0.629 6.411
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.577 1.017 -0.569
y 1.017 -36.865 -0.030
z -0.569 -0.030 -33.167
Traceless
 xyz
x -4.560 1.017 -0.569
y 1.017 -0.493 -0.030
z -0.569 -0.030 5.054
Polar
3z2-r210.107
x2-y2-2.711
xy1.017
xz-0.569
yz-0.030


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.506 0.419 0.119
y 0.419 6.195 0.013
z 0.119 0.013 5.310


<r2> (average value of r2) Å2
<r2> 171.969
(<r2>)1/2 13.114