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

using model chemistry: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-323.692326
Energy at 298.15K-323.701879
Nuclear repulsion energy251.188991
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 B1B95/6-311G*
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 3624 3474 4.45      
2 A 3534 3387 0.40      
3 A 3475 3331 216.07      
4 A 3161 3030 9.28      
5 A 3127 2997 32.45      
6 A 3061 2934 21.33      
7 A 3054 2928 10.13      
8 A 1885 1807 299.50      
9 A 1709 1638 45.47      
10 A 1512 1449 18.38      
11 A 1503 1441 3.48      
12 A 1449 1389 451.98      
13 A 1417 1358 11.43      
14 A 1401 1343 3.03      
15 A 1321 1267 13.92      
16 A 1247 1195 8.47      
17 A 1225 1174 9.23      
18 A 1167 1118 9.88      
19 A 1111 1065 47.62      
20 A 1022 980 0.82      
21 A 947 908 48.57      
22 A 904 866 80.26      
23 A 872 836 115.05      
24 A 814 780 11.05      
25 A 742 712 9.07      
26 A 563 539 6.27      
27 A 536 514 0.84      
28 A 404 388 5.70      
29 A 370 355 16.76      
30 A 312 299 12.09      
31 A 287 275 12.36      
32 A 230 221 1.08      
33 A 77 74 1.29      

Unscaled Zero Point Vibrational Energy (zpe) 24030.9 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 23036.0 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 B1B95/6-311G*
ABC
0.16314 0.11692 0.07255

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.058 1.351 -0.048
C2 1.462 -1.141 -0.185
C3 0.643 0.010 0.371
C4 -0.850 -0.169 0.053
O5 -1.491 0.983 -0.136
O6 -1.386 -1.240 0.010
H7 1.387 1.336 -1.006
H8 1.813 1.703 0.524
H9 1.038 -2.092 0.132
H10 1.454 -1.128 -1.277
H11 0.694 -0.009 1.465
H12 2.498 -1.083 0.154
H13 -0.801 1.677 -0.084

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.52771.46512.44132.57693.56191.01351.01043.44762.79482.06642.83441.8878
C22.52771.51792.51903.63742.85652.61112.95221.08861.09292.14311.09113.6154
C31.46511.51791.53662.39912.40982.05242.06452.15212.16111.09532.16372.2520
C42.44132.51901.53661.33151.19812.89703.28932.69622.82792.09873.47151.8518
O52.57693.63742.39911.33152.22953.02753.44533.99033.79872.88464.50090.9802
O63.56192.85652.40981.19812.22953.91944.37732.57293.12082.82113.88972.9762
H71.01352.61112.05242.89703.02753.91941.62983.62962.47992.89802.90352.3988
H81.01042.95222.06453.28933.44534.37731.62983.89373.37462.25192.89282.6838
H93.44761.08862.15212.69623.99032.57293.62963.89371.75802.49701.77484.1996
H102.79481.09292.16112.82793.79873.12082.47993.37461.75803.05801.77163.7916
H112.06642.14311.09532.09872.88462.82112.89802.25192.49703.05802.47522.7346
H122.83441.09112.16373.47154.50093.88972.90352.89281.77481.77162.47524.3073
H131.88783.61542.25201.85180.98022.97622.39882.68384.19963.79162.73464.3073

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.847 N1 C3 C4 108.822
N1 C3 H11 106.730 C2 C3 C4 111.113
C2 C3 H11 109.121 C3 N1 H7 110.474
C3 N1 H8 111.705 C3 C2 H9 110.223
C3 C2 H10 110.684 C3 C2 H12 111.003
C3 C4 O5 113.351 C3 C4 O6 123.098
C4 C3 H11 104.519 C4 O5 H13 105.452
O5 C4 O6 123.529 H7 N1 H8 107.280
H9 C2 H10 107.392 H9 C2 H12 109.023
H10 C2 H12 108.418
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.810      
2 C -0.639      
3 C -0.274      
4 C 0.490      
5 O -0.496      
6 O -0.337      
7 H 0.343      
8 H 0.351      
9 H 0.256      
10 H 0.219      
11 H 0.260      
12 H 0.216      
13 H 0.421      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  4.899 2.245 0.329 5.399
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.171 -0.028 -0.375
y -0.028 -37.394 -0.188
z -0.375 -0.188 -33.464
Traceless
 xyz
x -3.742 -0.028 -0.375
y -0.028 -1.077 -0.188
z -0.375 -0.188 4.819
Polar
3z2-r29.638
x2-y2-1.777
xy-0.028
xz-0.375
yz-0.188


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.104 0.162 0.080
y 0.162 7.625 -0.032
z 0.080 -0.032 5.430


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