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

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-323.760965
Energy at 298.15K-323.770544
Nuclear repulsion energy251.093785
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 mPW1PW91/6-311G**
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 3639 3482 9.47      
2 A 3549 3396 0.97      
3 A 3495 3343 301.47      
4 A 3164 3027 6.34      
5 A 3130 2995 26.97      
6 A 3065 2932 16.11      
7 A 3056 2924 10.75      
8 A 1890 1808 313.81      
9 A 1668 1596 40.61      
10 A 1501 1436 20.33      
11 A 1491 1427 4.84      
12 A 1455 1392 417.27      
13 A 1409 1348 13.32      
14 A 1396 1336 2.50      
15 A 1321 1264 7.06      
16 A 1252 1197 14.88      
17 A 1227 1174 10.31      
18 A 1166 1116 10.30      
19 A 1106 1059 44.26      
20 A 1022 978 1.07      
21 A 945 904 34.76      
22 A 911 871 68.56      
23 A 874 836 116.34      
24 A 818 783 8.84      
25 A 749 717 8.09      
26 A 572 547 4.64      
27 A 540 516 1.16      
28 A 409 391 5.12      
29 A 367 351 14.79      
30 A 313 300 13.53      
31 A 278 266 13.41      
32 A 231 221 0.31      
33 A 76 73 1.10      

Unscaled Zero Point Vibrational Energy (zpe) 24042.5 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 23001.5 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 mPW1PW91/6-311G**
ABC
0.16322 0.11638 0.07252

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.077 1.337 -0.026
C2 1.450 -1.157 -0.205
C3 0.641 -0.005 0.372
C4 -0.856 -0.159 0.053
O5 -1.469 1.002 -0.163
O6 -1.416 -1.218 0.035
H7 1.453 1.327 -0.968
H8 1.797 1.695 0.585
H9 1.008 -2.108 0.089
H10 1.450 -1.116 -1.298
H11 0.690 -0.048 1.465
H12 2.483 -1.119 0.143
H13 -0.750 1.668 -0.122

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.52731.46602.44482.57153.56971.01341.01043.44702.78832.07162.83461.8586
C22.52731.52032.52543.63042.87612.59832.97981.08931.09362.14391.09173.5806
C31.46601.52031.53842.39882.41142.05612.06732.15262.16261.09562.16432.2311
C42.44482.52541.53841.33021.19832.92893.27992.69692.83922.09713.47561.8379
O52.57153.63042.39881.33022.22933.04783.42173.98353.78132.90124.49580.9814
O63.56972.87612.41141.19832.22933.96384.37172.58223.16262.80163.90192.9659
H71.01342.59832.05612.92893.04783.96381.63203.62142.46622.89672.87742.3833
H81.01042.97982.06733.27993.42174.37171.63203.91573.40192.24482.92992.6429
H93.44701.08932.15262.69693.98352.58223.62143.91571.76162.49751.77734.1699
H102.78831.09362.16262.83923.78133.16262.46623.40191.76163.05881.77373.7383
H112.07162.14391.09562.09712.90122.80162.89672.24482.49753.05882.47152.7453
H122.83461.09172.16433.47564.49583.90192.87742.92991.77731.77372.47154.2763
H131.85863.58062.23111.83790.98142.96592.38332.64294.16993.73832.74534.2763

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.609 N1 C3 C4 108.909
N1 C3 H11 107.053 C2 C3 C4 111.308
C2 C3 H11 109.003 C3 N1 H7 110.730
C3 N1 H8 111.880 C3 C2 H9 110.057
C3 C2 H10 110.591 C3 C2 H12 110.844
C3 C4 O5 113.293 C3 C4 O6 123.077
C4 C3 H11 104.269 C4 O5 H13 104.314
O5 C4 O6 123.604 H7 N1 H8 107.497
H9 C2 H10 107.601 H9 C2 H12 109.158
H10 C2 H12 108.511
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.527      
2 C -0.306      
3 C -0.215      
4 C 0.420      
5 O -0.306      
6 O -0.352      
7 H 0.226      
8 H 0.231      
9 H 0.157      
10 H 0.122      
11 H 0.176      
12 H 0.119      
13 H 0.256      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  4.931 2.170 0.329 5.397
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.992 -0.087 -0.299
y -0.087 -37.290 0.004
z -0.299 0.004 -33.367
Traceless
 xyz
x -3.664 -0.087 -0.299
y -0.087 -1.110 0.004
z -0.299 0.004 4.774
Polar
3z2-r29.548
x2-y2-1.702
xy-0.087
xz-0.299
yz0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.200 0.182 0.069
y 0.182 7.656 -0.051
z 0.069 -0.051 5.492


<r2> (average value of r2) Å2
<r2> 160.800
(<r2>)1/2 12.681