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

using model chemistry: B3LYP/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-62.945100
Energy at 298.15K-62.954419
Nuclear repulsion energy137.806358
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/CEP-121G
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 3615 3523 5.68      
2 A 3498 3408 0.20      
3 A 3228 3146 240.18      
4 A 3117 3037 11.93      
5 A 3083 3005 41.99      
6 A 3028 2951 14.88      
7 A 2997 2921 25.98      
8 A 1716 1673 249.08      
9 A 1691 1648 74.31      
10 A 1523 1484 8.79      
11 A 1514 1475 7.67      
12 A 1430 1394 12.10      
13 A 1369 1334 66.42      
14 A 1340 1306 316.86      
15 A 1317 1283 19.29      
16 A 1260 1228 9.83      
17 A 1183 1153 27.86      
18 A 1122 1093 15.43      
19 A 1053 1026 41.10      
20 A 1007 981 0.73      
21 A 940 916 102.74      
22 A 925 901 60.49      
23 A 798 777 109.69      
24 A 766 746 48.22      
25 A 695 677 14.26      
26 A 596 581 3.39      
27 A 508 495 2.02      
28 A 383 373 0.77      
29 A 336 327 14.90      
30 A 290 282 7.88      
31 A 257 250 10.21      
32 A 239 233 1.59      
33 A 33 32 0.34      

Unscaled Zero Point Vibrational Energy (zpe) 23426.8 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 22829.5 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/CEP-121G
ABC
0.15729 0.10732 0.07245

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.265 -1.180 0.194
C2 -1.300 1.270 -0.426
C3 -0.638 0.159 0.429
C4 0.883 0.066 0.084
O5 1.239 -1.148 -0.471
O6 1.687 0.995 0.275
H7 -2.060 -1.164 -0.440
H8 -1.476 -1.705 1.039
H9 -0.758 2.211 -0.297
H10 -1.275 1.007 -1.492
H11 -0.702 0.438 1.489
H12 -2.344 1.417 -0.121
H13 0.393 -1.690 -0.486

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.52691.49682.48512.59163.66801.01701.01703.46382.76132.14772.82931.8631
C22.52691.55002.54433.50633.08092.54983.32051.09421.09862.17151.09733.4105
C31.49681.55001.56192.45772.47582.12782.13282.18022.19421.09842.18992.3059
C42.48512.54431.56191.38091.24443.23203.10002.72772.83282.15023.50411.9098
O52.59163.50632.45771.38092.31283.29973.15663.91173.46503.18194.42031.0058
O63.66803.08092.47581.24442.31284.38384.22852.79033.44962.73684.07283.0768
H71.01702.54982.12783.23203.29974.38381.67983.62082.53712.85212.61582.5091
H81.01703.32052.13283.10003.15664.22851.67984.19973.71512.32293.44172.4116
H93.46381.09422.18022.72773.91172.79033.62084.19971.77392.51701.78284.0722
H102.76131.09862.19422.83283.46503.44962.53713.71511.77393.08851.78603.3272
H112.14772.17151.09842.15023.18192.73682.85212.32292.51703.08852.49953.1028
H122.82931.09732.18993.50414.42034.07282.61583.44171.78281.78602.49954.1564
H131.86313.41052.30591.90981.00583.07682.50912.41164.07223.32723.10284.1564

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 112.059 N1 C3 C4 108.662
N1 C3 H11 110.765 C2 C3 C4 109.694
C2 C3 H11 108.959 C3 N1 H7 114.304
C3 N1 H8 114.741 C3 C2 H9 109.883
C3 C2 H10 110.721 C3 C2 H12 110.458
C3 C4 O5 113.124 C3 C4 O6 123.436
C4 C3 H11 106.549 C4 O5 H13 105.206
O5 C4 O6 123.435 H7 N1 H8 111.349
H9 C2 H10 107.997 H9 C2 H12 108.877
H10 C2 H12 108.845
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.689      
2 C -0.556      
3 C -0.051      
4 C 0.113      
5 O -0.335      
6 O -0.159      
7 H 0.302      
8 H 0.300      
9 H 0.201      
10 H 0.160      
11 H 0.175      
12 H 0.160      
13 H 0.377      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -6.349 -1.564 0.757 6.583
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.877 0.283 0.021
y 0.283 -36.642 -2.368
z 0.021 -2.368 -34.644
Traceless
 xyz
x -6.234 0.283 0.021
y 0.283 1.619 -2.368
z 0.021 -2.368 4.615
Polar
3z2-r29.230
x2-y2-5.235
xy0.283
xz0.021
yz-2.368


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.545 0.431 0.035
y 0.431 7.712 0.357
z 0.035 0.357 5.808


<r2> (average value of r2) Å2
<r2> 138.372
(<r2>)1/2 11.763