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

using model chemistry: BLYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at BLYP/3-21G*
 hartrees
Energy at 0K-321.851679
Energy at 298.15K-321.861512
Nuclear repulsion energy243.749546
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 BLYP/3-21G*
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 3372 3350 1.99      
2 A 3278 3256 0.12      
3 A 3060 3040 8.81      
4 A 3035 3015 17.57      
5 A 2966 2946 16.65      
6 A 2958 2939 35.09      
7 A 2242 2227 921.31      
8 A 1726 1715 457.48      
9 A 1656 1645 13.07      
10 A 1565 1555 160.20      
11 A 1520 1510 10.48      
12 A 1487 1477 6.64      
13 A 1380 1371 9.33      
14 A 1333 1324 4.31      
15 A 1301 1293 6.47      
16 A 1253 1245 7.08      
17 A 1218 1210 83.98      
18 A 1150 1142 74.84      
19 A 1123 1116 57.92      
20 A 1022 1016 8.63      
21 A 970 964 4.75      
22 A 919 913 10.24      
23 A 886 881 25.45      
24 A 810 805 40.63      
25 A 751 746 9.99      
26 A 664 659 15.95      
27 A 546 542 5.91      
28 A 479 476 11.38      
29 A 417 415 8.63      
30 A 373 371 13.76      
31 A 337 335 8.53      
32 A 201 200 3.87      
33 A 89 88 0.51      

Unscaled Zero Point Vibrational Energy (zpe) 23042.5 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 22892.7 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 BLYP/3-21G*
ABC
0.22826 0.08346 0.06518

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.875 0.597 0.147
C2 1.370 -0.750 -0.362
C3 -0.008 -1.051 0.288
C4 -1.090 0.056 0.017
O5 -0.597 1.332 -0.055
O6 -2.294 -0.222 -0.083
H7 2.636 0.970 -0.446
H8 2.207 0.524 1.125
H9 2.089 -1.563 -0.156
H10 1.253 -0.650 -1.452
H11 -0.411 -1.999 -0.093
H12 0.117 -1.156 1.383
H13 0.481 1.279 0.057

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.52602.50553.01682.58624.25441.03451.03622.19152.12073.46762.77341.5547
C21.52601.55202.61612.88043.71182.13792.12991.10461.10102.19182.18572.2547
C32.50551.55201.57142.47842.46003.40742.84362.20372.18571.09921.10702.3915
C43.01682.61611.57141.37071.23913.86453.51013.57192.85482.16692.18871.9915
O52.58622.88042.47841.37072.30143.27593.14763.95033.05053.33682.96101.0842
O64.25443.71182.46001.23912.30145.08454.71974.58423.82632.58902.97213.1574
H71.03452.13793.40743.86453.27595.08451.68912.60762.35554.26943.76992.2344
H81.03622.12992.84363.51013.14764.71971.68912.45182.98853.83532.69422.1665
H92.19151.10462.20373.57193.95034.58422.60762.45181.79152.53922.53473.2725
H102.12071.10102.18572.85483.05053.82632.35552.98851.79152.53723.09572.5683
H113.46762.19181.09922.16693.33682.58904.26943.83532.53922.53721.78023.4008
H122.77342.18571.10702.18872.96102.97213.76992.69422.53473.09571.78022.7967
H131.55472.25472.39151.99151.08423.15742.23442.16653.27252.56833.40082.7967

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 108.978 N1 C2 H9 111.832
N1 C2 H10 106.540 C2 N1 H7 111.790
C2 N1 H8 111.017 C2 C3 C4 113.767
C2 C3 H11 110.359 C2 C3 H12 109.431
C3 C2 H9 110.971 C3 C2 H10 109.781
C3 C4 O5 114.615 C3 C4 O6 121.709
C4 C3 H11 107.132 C4 C3 H12 108.358
C4 O5 H13 107.868 O5 C4 O6 123.647
H7 N1 H8 109.320 H9 C2 H10 108.630
H11 C3 H12 107.584
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.632      
2 C -0.248      
3 C -0.459      
4 C 0.582      
5 O -0.540      
6 O -0.458      
7 H 0.291      
8 H 0.286      
9 H 0.190      
10 H 0.217      
11 H 0.212      
12 H 0.200      
13 H 0.359      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  7.171 -1.379 0.578 7.325
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.005 2.668 -0.147
y 2.668 -37.366 0.302
z -0.147 0.302 -33.195
Traceless
 xyz
x -1.725 2.668 -0.147
y 2.668 -2.265 0.302
z -0.147 0.302 3.990
Polar
3z2-r27.981
x2-y20.360
xy2.668
xz-0.147
yz0.302


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.821 0.583 0.120
y 0.583 6.017 -0.056
z 0.120 -0.056 4.690


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