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All results from a given calculation for CH3CH(NH2)COOH (Alanine)

using model chemistry: B3LYP/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 B3LYP/6-31G*
 hartrees
Energy at 0K-323.740156
Energy at 298.15K-323.749637
Nuclear repulsion energy249.347954
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 B3LYP/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 3570 3429 3.55      
2 A 3480 3342 0.38      
3 A 3399 3264 245.48      
4 A 3157 3032 7.52      
5 A 3117 2994 30.30      
6 A 3055 2934 28.13      
7 A 3050 2929 2.38      
8 A 1874 1800 268.09      
9 A 1696 1628 32.98      
10 A 1528 1467 11.40      
11 A 1520 1459 3.21      
12 A 1460 1402 427.18      
13 A 1433 1376 4.79      
14 A 1409 1353 5.86      
15 A 1337 1283 12.22      
16 A 1248 1198 10.55      
17 A 1230 1181 12.88      
18 A 1156 1110 9.73      
19 A 1102 1059 50.68      
20 A 1028 988 1.15      
21 A 955 917 68.42      
22 A 900 865 62.37      
23 A 873 838 101.07      
24 A 805 773 9.62      
25 A 734 705 9.11      
26 A 562 539 5.44      
27 A 531 510 0.84      
28 A 410 394 5.50      
29 A 366 351 17.24      
30 A 303 291 17.05      
31 A 277 266 13.72      
32 A 224 215 0.32      
33 A 76 73 1.31      

Unscaled Zero Point Vibrational Energy (zpe) 23931.3 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 22981.2 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 B3LYP/6-31G*
ABC
0.16108 0.11484 0.07148

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.069 1.357 -0.035
C2 1.472 -1.151 -0.198
C3 0.647 0.002 0.376
C4 -0.857 -0.167 0.053
O5 -1.496 0.995 -0.150
O6 -1.409 -1.242 0.022
H7 1.403 1.344 -0.999
H8 1.837 1.695 0.539
H9 1.048 -2.109 0.112
H10 1.465 -1.123 -1.295
H11 0.707 -0.026 1.473
H12 2.512 -1.093 0.142
H13 -0.787 1.684 -0.097

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.54521.47752.45752.59273.59111.01971.01703.46882.80982.07782.84881.8853
C22.54521.52972.54093.66302.89092.62122.96171.09261.09702.15481.09543.6267
C31.47751.52971.54772.41992.42892.06492.07552.16472.17451.09842.17512.2607
C42.45752.54091.54771.34181.20862.91543.31082.72072.85012.11673.49481.8591
O52.59273.66302.41991.34182.24533.04093.47504.02173.81642.92044.52850.9905
O63.59112.89092.42891.20862.24533.95454.40772.60683.16332.83893.92532.9942
H71.01972.62122.06492.91543.04093.95451.63523.64452.48622.91022.91042.3927
H81.01702.96172.07553.31083.47504.40771.63523.90763.38242.26062.89502.7002
H93.46881.09262.16472.72074.02172.60683.64453.90761.76742.51121.78204.2188
H102.80981.09702.17452.85013.81643.16332.48623.38241.76743.07221.77833.7933
H112.07782.15481.09842.11672.92042.83892.91022.26062.51123.07222.48322.7605
H122.84881.09542.17513.49484.52853.92532.91042.89501.78201.77832.48324.3188
H131.88533.62672.26071.85910.99052.99422.39272.70024.21883.79332.76054.3188

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.625 N1 C3 C4 108.633
N1 C3 H11 106.609 C2 C3 C4 111.312
C2 C3 H11 109.048 C3 N1 H7 110.208
C3 N1 H8 111.278 C3 C2 H9 110.161
C3 C2 H10 110.669 C3 C2 H12 110.815
C3 C4 O5 113.563 C3 C4 O6 123.116
C4 C3 H11 104.983 C4 O5 H13 104.703
O5 C4 O6 123.294 H7 N1 H8 106.814
H9 C2 H10 107.642 H9 C2 H12 109.063
H10 C2 H12 108.407
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.765      
2 C -0.448      
3 C -0.088      
4 C 0.610      
5 O -0.581      
6 O -0.465      
7 H 0.321      
8 H 0.324      
9 H 0.190      
10 H 0.150      
11 H 0.178      
12 H 0.142      
13 H 0.432      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  4.893 2.156 0.277 5.354
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.589 -0.134 -0.398
y -0.134 -37.165 -0.182
z -0.398 -0.182 -33.263
Traceless
 xyz
x -3.375 -0.134 -0.398
y -0.134 -1.239 -0.182
z -0.398 -0.182 4.614
Polar
3z2-r29.228
x2-y2-1.424
xy-0.134
xz-0.398
yz-0.182


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.808 0.298 0.122
y 0.298 7.266 -0.086
z 0.122 -0.086 5.115


<r2> (average value of r2) Å2
<r2> 163.511
(<r2>)1/2 12.787