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

using model chemistry: mPW1PW91/6-31+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 mPW1PW91/6-31+G**
 hartrees
Energy at 0K-323.694097
Energy at 298.15K-323.703574
Nuclear repulsion energy250.513559
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 mPW1PW91/6-31+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 3668 3491 16.69      
2 A 3569 3397 0.56      
3 A 3476 3308 330.08      
4 A 3185 3031 4.63      
5 A 3151 2999 23.22      
6 A 3087 2938 10.47      
7 A 3071 2923 15.69      
8 A 1880 1790 349.73      
9 A 1671 1590 43.45      
10 A 1508 1435 17.45      
11 A 1498 1426 3.66      
12 A 1442 1372 423.78      
13 A 1416 1348 10.82      
14 A 1396 1328 5.88      
15 A 1317 1253 11.94      
16 A 1255 1194 19.13      
17 A 1232 1173 6.50      
18 A 1167 1111 11.16      
19 A 1098 1045 38.46      
20 A 1024 975 1.05      
21 A 947 902 31.80      
22 A 918 874 78.27      
23 A 866 824 128.16      
24 A 817 777 6.26      
25 A 744 708 7.98      
26 A 577 549 3.73      
27 A 535 509 1.83      
28 A 409 390 4.45      
29 A 356 338 12.01      
30 A 289 275 15.19      
31 A 271 258 14.71      
32 A 234 223 0.30      
33 A 60 57 1.00      

Unscaled Zero Point Vibrational Energy (zpe) 24065.7 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 22905.7 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 mPW1PW91/6-31+G**
ABC
0.16283 0.11520 0.07250

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.114 1.308 0.014
C2 1.420 -1.182 -0.248
C3 0.642 -0.032 0.378
C4 -0.860 -0.138 0.057
O5 -1.433 1.033 -0.218
O6 -1.465 -1.182 0.084
H7 1.566 1.308 -0.894
H8 1.772 1.680 0.686
H9 0.966 -2.136 0.022
H10 1.409 -1.106 -1.340
H11 0.696 -0.117 1.470
H12 2.459 -1.172 0.090
H13 -0.695 1.685 -0.184

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.52241.46642.44802.57313.58541.01421.01143.44722.78402.07912.82201.8594
C22.52241.52322.52633.61202.90362.57643.03151.09061.09462.14661.09283.5636
C31.46641.52321.53992.40732.41792.06532.07472.15842.16671.09632.16432.2477
C42.44802.52631.53991.33231.20632.98033.26112.70672.83532.10233.47661.8465
O52.57313.61202.40731.33232.23543.08693.39333.98163.73012.95064.48390.9855
O63.58542.90362.41791.20632.23544.04244.36262.61143.20832.77883.92352.9805
H71.01422.57642.06532.98033.08694.04241.63623.61382.46022.89332.81332.4002
H81.01143.03152.07473.26113.39334.36261.63623.95673.46462.23652.99362.6170
H93.44721.09062.15842.70673.98162.61143.61383.95671.76432.49861.77884.1716
H102.78401.09462.16672.83533.73013.20832.46023.46461.76433.06271.77553.6821
H112.07912.14661.09632.10232.95062.77882.89332.23652.49863.06272.47412.8142
H122.82201.09282.16433.47664.48393.92352.81332.99361.77881.77552.47414.2648
H131.85943.56362.24771.84650.98552.98052.40022.61704.17163.68212.81424.2648

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.056 N1 C3 C4 109.011
N1 C3 H11 107.573 C2 C3 C4 111.122
C2 C3 H11 108.971 C3 N1 H7 111.431
C3 N1 H8 112.412 C3 C2 H9 110.235
C3 C2 H10 110.654 C3 C2 H12 110.570
C3 C4 O5 113.698 C3 C4 O6 122.931
C4 C3 H11 104.521 C4 O5 H13 104.636
O5 C4 O6 123.347 H7 N1 H8 107.751
H9 C2 H10 107.676 H9 C2 H12 109.112
H10 C2 H12 108.521
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.709      
2 C -0.578      
3 C -0.053      
4 C 0.425      
5 O -0.434      
6 O -0.452      
7 H 0.322      
8 H 0.319      
9 H 0.212      
10 H 0.175      
11 H 0.202      
12 H 0.172      
13 H 0.399      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  5.352 2.080 0.385 5.755
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.052 -0.255 -0.186
y -0.255 -37.765 0.381
z -0.186 0.381 -33.851
Traceless
 xyz
x -4.244 -0.255 -0.186
y -0.255 -0.814 0.381
z -0.186 0.381 5.057
Polar
3z2-r210.114
x2-y2-2.287
xy-0.255
xz-0.186
yz0.381


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.026 0.249 0.082
y 0.249 8.344 -0.103
z 0.082 -0.103 6.004


<r2> (average value of r2) Å2
<r2> 162.804
(<r2>)1/2 12.759