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

using model chemistry: B1B95/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-31+G**
 hartrees
Energy at 0K-323.642019
Energy at 298.15K-323.651487
Nuclear repulsion energy250.556976
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 B1B95/6-31+G**
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 3648 3490 14.59      
2 A 3550 3396 0.32      
3 A 3478 3327 309.21      
4 A 3175 3037 5.23      
5 A 3142 3006 23.96      
6 A 3076 2942 11.61      
7 A 3062 2930 15.15      
8 A 1873 1792 340.14      
9 A 1660 1588 41.79      
10 A 1500 1435 17.72      
11 A 1491 1426 2.26      
12 A 1424 1362 422.04      
13 A 1408 1347 6.46      
14 A 1386 1326 7.69      
15 A 1308 1251 16.16      
16 A 1244 1190 17.10      
17 A 1221 1168 5.54      
18 A 1162 1111 10.81      
19 A 1095 1048 37.66      
20 A 1016 972 0.80      
21 A 942 902 25.49      
22 A 897 858 83.80      
23 A 857 820 127.77      
24 A 811 776 6.52      
25 A 737 705 8.25      
26 A 566 541 4.43      
27 A 531 508 1.76      
28 A 403 386 5.04      
29 A 350 335 11.44      
30 A 295 282 13.79      
31 A 282 270 15.24      
32 A 235 224 1.49      
33 A 65 63 1.03      

Unscaled Zero Point Vibrational Energy (zpe) 23945.5 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 22906.3 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 B1B95/6-31+G**
ABC
0.16280 0.11559 0.07241

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.106 1.318 -0.004
C2 1.427 -1.174 -0.231
C3 0.643 -0.019 0.376
C4 -0.856 -0.144 0.056
O5 -1.453 1.022 -0.194
O6 -1.443 -1.198 0.064
H7 1.525 1.314 -0.928
H8 1.795 1.682 0.642
H9 0.972 -2.125 0.049
H10 1.421 -1.111 -1.323
H11 0.696 -0.086 1.468
H12 2.464 -1.158 0.113
H13 -0.730 1.689 -0.157

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.52341.46552.44782.58333.58241.01481.01193.44622.78262.07542.82641.8793
C22.52341.52162.52123.62212.88482.58553.00941.09041.09432.14581.09243.5856
C31.46551.52161.53812.40912.41602.06232.07202.15592.16391.09602.16332.2557
C42.44782.52121.53811.33351.20662.95973.27222.69542.83242.09943.47191.8496
O52.58333.62212.40911.33352.23543.08063.41843.98013.75312.93444.49320.9845
O63.58242.88482.41601.20662.23544.01244.37192.58603.18332.78943.90702.9823
H71.01482.58552.06232.95973.08064.01241.63543.61702.45882.89632.84122.4123
H81.01193.00942.07203.27223.41844.37191.63543.94013.43582.24012.96542.6484
H93.44621.09042.15592.69543.98012.58603.61703.94011.76392.49951.77934.1814
H102.78261.09432.16392.83243.75313.18332.45883.43581.76393.06071.77503.7187
H112.07542.14581.09602.09942.93442.78942.89632.24012.49953.06072.47232.7975
H122.82641.09242.16333.47194.49323.90702.84122.96541.77931.77502.47234.2870
H131.87933.58562.25571.84960.98452.98232.41232.64844.18143.71872.79754.2870

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.281 N1 C3 C4 109.142
N1 C3 H11 107.362 C2 C3 C4 110.968
C2 C3 H11 109.035 C3 N1 H7 111.201
C3 N1 H8 112.222 C3 C2 H9 110.154
C3 C2 H10 110.560 C3 C2 H12 110.631
C3 C4 O5 113.868 C3 C4 O6 122.885
C4 C3 H11 104.434 C4 O5 H13 104.862
O5 C4 O6 123.222 H7 N1 H8 107.584
H9 C2 H10 107.684 H9 C2 H12 109.206
H10 C2 H12 108.535
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.708      
2 C -0.541      
3 C -0.061      
4 C 0.459      
5 O -0.436      
6 O -0.460      
7 H 0.315      
8 H 0.313      
9 H 0.203      
10 H 0.165      
11 H 0.194      
12 H 0.162      
13 H 0.396      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  5.225 2.110 0.371 5.647
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.974 -0.313 -0.224
y -0.313 -37.869 0.224
z -0.224 0.224 -33.885
Traceless
 xyz
x -4.096 -0.313 -0.224
y -0.313 -0.940 0.224
z -0.224 0.224 5.037
Polar
3z2-r210.073
x2-y2-2.104
xy-0.313
xz-0.224
yz0.224


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.078 0.234 0.080
y 0.234 8.441 -0.081
z 0.080 -0.081 6.039


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