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

using model chemistry: TPSSh/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 TPSSh/6-31G*
 hartrees
Energy at 0K-323.746679
Energy at 298.15K-323.756491
HF Energy-323.746679
Nuclear repulsion energy246.670186
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 TPSSh/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 3555 3411 2.91      
2 A 3466 3326 0.50      
3 A 3139 3011 11.83      
4 A 3104 2978 241.10      
5 A 3101 2975 465.34      
6 A 3040 2916 13.22      
7 A 3024 2901 106.55      
8 A 1850 1775 361.21      
9 A 1695 1626 28.21      
10 A 1547 1484 5.04      
11 A 1512 1451 262.97      
12 A 1501 1440 6.24      
13 A 1430 1372 11.92      
14 A 1377 1321 7.66      
15 A 1328 1274 2.01      
16 A 1303 1250 16.16      
17 A 1250 1199 82.07      
18 A 1152 1106 6.21      
19 A 1075 1031 5.35      
20 A 1036 994 9.66      
21 A 1011 970 104.88      
22 A 956 917 7.49      
23 A 923 885 27.15      
24 A 870 834 43.03      
25 A 808 776 13.90      
26 A 685 657 9.84      
27 A 568 545 2.88      
28 A 482 463 10.71      
29 A 405 389 14.17      
30 A 332 319 6.34      
31 A 299 287 9.58      
32 A 199 191 3.47      
33 A 89 86 0.33      

Unscaled Zero Point Vibrational Energy (zpe) 24056.8 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 23080.1 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 TPSSh/6-31G*
ABC
0.23798 0.08349 0.06600

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.841 -0.580 0.129
C2 -1.338 0.715 -0.368
C3 0.002 1.020 0.311
C4 1.070 -0.042 0.029
O5 0.588 -1.296 -0.032
O6 2.243 0.217 -0.115
H7 -2.603 -0.927 -0.449
H8 -2.198 -0.486 1.079
H9 -2.033 1.556 -0.223
H10 -1.185 0.604 -1.447
H11 0.394 1.993 0.008
H12 -0.149 1.054 1.400
H13 -0.395 -1.260 0.076

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.47502.44702.96162.53754.16791.01811.01922.17312.07703.41042.67351.5979
C21.47501.53322.55552.80493.62462.07412.06741.10071.09532.18582.15762.2326
C32.44701.53321.53222.41322.41833.34002.77422.17132.16121.09241.10002.3256
C42.96162.55551.53221.34451.20993.80863.46093.49962.77102.14442.13731.9058
O52.53752.80492.41321.34452.24343.23993.10713.87832.95833.29482.84950.9905
O64.16793.62462.41831.20992.24344.99074.65204.48233.69752.56642.95293.0296
H71.01812.07413.34003.80863.23994.99071.64152.55752.31304.20973.65632.2938
H81.01922.06742.77423.46093.10714.65201.64152.42692.93133.74332.58312.2028
H92.17311.10072.17133.49963.87834.48232.55752.42691.76792.47752.53653.2708
H102.07701.09532.16122.77102.95833.69752.31302.93131.76792.55723.06252.5325
H113.41042.18581.09242.14443.29482.56644.20973.74332.47752.55721.76493.3479
H122.67352.15761.10002.13732.84952.95293.65632.58312.53653.06251.76492.6774
H131.59792.23262.32561.90580.99053.02962.29382.20283.27082.53253.34792.6774

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 108.851 N1 C2 H9 114.282
N1 C2 H10 106.891 C2 N1 H7 111.280
C2 N1 H8 110.637 C2 C3 C4 112.957
C2 C3 H11 111.613 C2 C3 H12 108.938
C3 C2 H9 109.962 C3 C2 H10 109.492
C3 C4 O5 113.891 C3 C4 O6 123.323
C4 C3 H11 108.417 C4 C3 H12 107.450
C4 O5 H13 108.464 O5 C4 O6 122.784
H7 N1 H8 107.361 H9 C2 H10 107.237
H11 C3 H12 107.227
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.785      
2 C -0.201      
3 C -0.418      
4 C 0.603      
5 O -0.598      
6 O -0.469      
7 H 0.339      
8 H 0.333      
9 H 0.167      
10 H 0.191      
11 H 0.201      
12 H 0.184      
13 H 0.452      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  6.559 -1.249 0.590 6.703
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.061 0.465 0.131
y 0.465 6.462 -0.020
z 0.131 -0.020 5.198


<r2> (average value of r2) Å2
<r2> 171.979
(<r2>)1/2 13.114