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

using model chemistry: B1B95/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-31G
 hartrees
Energy at 0K-323.506897
Energy at 298.15K-323.516846
Nuclear repulsion energy247.181832
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 B1B95/6-31G
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 3656 3487 10.63      
2 A 3542 3378 3.21      
3 A 3165 3018 5.55      
4 A 3130 2985 18.70      
5 A 3063 2921 7.50      
6 A 3054 2912 36.43      
7 A 2877 2743 863.58      
8 A 1807 1723 371.67      
9 A 1708 1629 59.36      
10 A 1553 1481 11.54      
11 A 1507 1437 56.54      
12 A 1505 1435 198.85      
13 A 1435 1369 17.66      
14 A 1387 1322 7.25      
15 A 1330 1269 4.16      
16 A 1313 1252 33.27      
17 A 1259 1201 94.18      
18 A 1170 1116 10.29      
19 A 1113 1061 119.15      
20 A 1101 1050 35.32      
21 A 1010 964 31.22      
22 A 974 929 3.42      
23 A 922 879 30.83      
24 A 865 825 108.45      
25 A 822 784 26.78      
26 A 688 657 10.07      
27 A 572 546 2.75      
28 A 495 472 9.35      
29 A 430 410 11.00      
30 A 350 334 2.98      
31 A 314 299 12.57      
32 A 205 196 6.93      
33 A 92 87 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 24205.5 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 23084.8 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 B1B95/6-31G
ABC
0.23794 0.08473 0.06673

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.892 0.555 0.142
C2 1.342 -0.720 -0.364
C3 -0.009 -1.013 0.294
C4 -1.072 0.045 0.024
O5 -0.608 1.315 -0.047
O6 -2.264 -0.229 -0.092
H7 2.599 0.968 -0.453
H8 2.214 0.508 1.104
H9 2.024 -1.564 -0.205
H10 1.207 -0.610 -1.443
H11 -0.403 -1.970 -0.052
H12 0.121 -1.099 1.382
H13 0.406 1.323 0.059

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.47812.46863.00992.61954.23541.01311.01492.15172.08353.41742.72181.6750
C21.47811.53072.56212.83643.64932.10722.10301.09691.09352.16892.16392.2871
C32.46861.53071.52442.42842.41883.35962.81242.16462.15861.09111.09862.3844
C43.00992.56211.52441.35441.22823.81593.49003.49712.78882.12422.13891.9543
O52.61952.83642.42841.35442.26473.25143.15273.90442.99153.29132.89841.0191
O64.23543.64932.41881.22822.26475.02154.69314.49273.74422.54842.93503.0916
H71.01312.10723.35963.81593.25145.02151.66862.60892.32594.22003.71282.2805
H81.01492.10302.81243.49003.15274.69311.66862.45822.95833.78482.65372.2420
H92.15171.09692.16463.49713.90444.49272.60892.45821.76412.46582.52153.3207
H102.08351.09352.15862.78882.99153.74422.32592.95831.76412.52543.06612.5761
H113.41742.16891.09112.12423.29132.54844.22003.78482.46582.52541.75743.3925
H122.72182.16391.09862.13892.89842.93503.71282.65372.52153.06611.75742.7744
H131.67502.28712.38441.95431.01913.09162.28052.24203.32072.57613.39252.7744

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 110.244 N1 C2 H9 112.516
N1 C2 H10 107.282 C2 N1 H7 114.221
C2 N1 H8 113.740 C2 C3 C4 113.990
C2 C3 H11 110.513 C2 C3 H12 109.678
C3 C2 H9 109.833 C3 C2 H10 109.562
C3 C4 O5 114.906 C3 C4 O6 122.610
C4 C3 H11 107.454 C4 C3 H12 108.162
C4 O5 H13 110.049 O5 C4 O6 122.467
H7 N1 H8 110.726 H9 C2 H10 107.297
H11 C3 H12 106.758
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.789      
2 C -0.193      
3 C -0.391      
4 C 0.520      
5 O -0.590      
6 O -0.423      
7 H 0.333      
8 H 0.327      
9 H 0.173      
10 H 0.198      
11 H 0.204      
12 H 0.193      
13 H 0.438      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  7.344 -1.657 0.663 7.557
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.377 2.783 -0.439
y 2.783 -37.467 0.183
z -0.439 0.183 -33.124
Traceless
 xyz
x -4.082 2.783 -0.439
y 2.783 -1.216 0.183
z -0.439 0.183 5.298
Polar
3z2-r210.596
x2-y2-1.910
xy2.783
xz-0.439
yz0.183


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.746 0.591 0.154
y 0.591 6.167 -0.028
z 0.154 -0.028 4.879


<r2> (average value of r2) Å2
<r2> 170.722
(<r2>)1/2 13.066