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All results from a given calculation for CH3CH(NH2)COOH (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-323.505949
Energy at 298.15K-323.515477
Nuclear repulsion energy249.246316
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 3683 3513 13.27      
2 A 3562 3397 2.95      
3 A 3246 3095 266.31      
4 A 3186 3038 3.85      
5 A 3156 3010 25.21      
6 A 3085 2942 10.03      
7 A 3070 2928 15.03      
8 A 1810 1726 252.02      
9 A 1708 1629 52.36      
10 A 1541 1470 13.80      
11 A 1532 1461 4.78      
12 A 1451 1384 19.81      
13 A 1410 1345 35.25      
14 A 1393 1329 376.83      
15 A 1329 1267 28.22      
16 A 1256 1198 15.62      
17 A 1227 1170 15.40      
18 A 1174 1120 9.61      
19 A 1102 1051 44.27      
20 A 1036 988 0.74      
21 A 961 916 112.89      
22 A 953 909 44.26      
23 A 812 774 97.93      
24 A 800 763 110.10      
25 A 726 692 9.67      
26 A 569 542 4.17      
27 A 534 509 1.92      
28 A 407 388 5.26      
29 A 370 353 13.27      
30 A 322 307 8.61      
31 A 279 267 14.09      
32 A 239 228 0.55      
33 A 64 61 1.04      

Unscaled Zero Point Vibrational Energy (zpe) 23995.1 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 22884.1 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
0.15925 0.11590 0.07206

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 1.116 1.301 0.002
C2 1.415 -1.195 -0.243
C3 0.646 -0.038 0.388
C4 -0.853 -0.140 0.061
O5 -1.420 1.059 -0.208
O6 -1.472 -1.200 0.070
H7 1.532 1.341 -0.921
H8 1.690 1.773 0.686
H9 0.931 -2.139 0.010
H10 1.417 -1.105 -1.334
H11 0.717 -0.113 1.480
H12 2.450 -1.215 0.109
H13 -0.666 1.719 -0.184

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.52551.47112.44122.55613.60011.01361.01053.44522.76822.08372.84921.8395
C22.52551.52502.51963.62142.90442.62773.12201.09111.09492.15051.09263.5808
C31.47111.52501.53812.41402.43712.09842.11212.15322.16701.09652.17082.2665
C42.44122.51961.53811.35321.22722.97513.24372.67932.83352.11643.47311.8849
O52.55613.62142.41401.35322.27613.05033.31403.97453.74092.96414.49871.0028
O63.60012.90442.43711.22722.27614.05824.38432.58083.21382.82203.92213.0390
H71.01362.62772.09842.97513.05034.05821.67233.65272.48322.92292.90412.3490
H81.01053.12202.11213.24373.31404.38431.67234.04233.52692.26553.13652.5121
H93.44521.09112.15322.67933.97452.58083.65274.04231.76432.51221.78074.1797
H102.76821.09492.16702.83353.74093.21382.48323.52691.76433.06431.77733.6922
H112.08372.15051.09652.11642.96412.82202.92292.26552.51223.06432.46882.8346
H122.84921.09262.17083.47314.49873.92212.90413.13651.78071.77732.46884.2890
H131.83953.58082.26651.88491.00283.03902.34902.51214.17973.69222.83464.2890

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 114.889 N1 C3 C4 108.415
N1 C3 H11 107.595 C2 C3 C4 110.685
C2 C3 H11 109.144 C3 N1 H7 113.967
C3 N1 H8 115.410 C3 C2 H9 109.668
C3 C2 H10 110.537 C3 C2 H12 110.985
C3 C4 O5 113.063 C3 C4 O6 123.211
C4 C3 H11 105.671 C4 O5 H13 105.303
O5 C4 O6 123.711 H7 N1 H8 111.421
H9 C2 H10 107.623 H9 C2 H12 109.267
H10 C2 H12 108.686
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 -0.776      
2 C -0.452      
3 C -0.142      
4 C 0.551      
5 O -0.571      
6 O -0.424      
7 H 0.326      
8 H 0.327      
9 H 0.207      
10 H 0.162      
11 H 0.214      
12 H 0.158      
13 H 0.420      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  5.833 2.289 0.485 6.285
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.486 0.412 -0.474
y 0.412 -36.468 0.436
z -0.474 0.436 -33.196
Traceless
 xyz
x -5.654 0.412 -0.474
y 0.412 0.373 0.436
z -0.474 0.436 5.281
Polar
3z2-r210.562
x2-y2-4.018
xy0.412
xz-0.474
yz0.436


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.407 0.401 0.101
y 0.401 7.206 -0.146
z 0.101 -0.146 4.854


<r2> (average value of r2) Å2
<r2> 162.930
(<r2>)1/2 12.764