return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for H2NCH2COOH (Glycine)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/6-311G**
 hartrees
Energy at 0K-284.195299
Energy at 298.15K-284.202079
Nuclear repulsion energy178.107875
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 PBEPBE/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' 3629 3596 29.42      
2 A' 3408 3377 0.09      
3 A' 2974 2947 17.99      
4 A' 1774 1758 249.95      
5 A' 1630 1615 19.06      
6 A' 1404 1392 14.81      
7 A' 1347 1335 19.26      
8 A' 1267 1256 5.70      
9 A' 1140 1130 43.82      
10 A' 1094 1084 226.28      
11 A' 907 899 144.15      
12 A' 803 796 74.82      
13 A' 618 613 6.93      
14 A' 450 446 31.73      
15 A' 249 247 9.73      
16 A" 3478 3446 0.75      
17 A" 3009 2982 8.52      
18 A" 1348 1335 0.79      
19 A" 1145 1135 0.73      
20 A" 892 884 2.88      
21 A" 658 652 88.06      
22 A" 493 489 32.95      
23 A" 217 215 44.54      
24 A" 49 48 6.27      

Unscaled Zero Point Vibrational Energy (zpe) 16992.0 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 16837.4 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 PBEPBE/6-311G**
ABC
0.34065 0.12793 0.09605

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.554 0.000
O2 1.183 0.832 0.000
O3 -0.987 1.494 0.000
C4 -0.574 -0.862 0.000
N5 0.406 -1.936 0.000
H6 -0.528 2.358 0.000
H7 -1.238 -0.954 0.876
H8 -1.238 -0.954 -0.876
H9 1.021 -1.822 0.810
H10 1.021 -1.822 -0.810

Atom - Atom Distances (Å)
  C1 O2 O3 C4 N5 H6 H7 H8 H9 H10
C11.21501.36331.52782.52261.88012.13862.13862.70972.7097
O21.21502.26892.44012.87462.29293.13303.13302.77912.7791
O31.36332.26892.39213.70190.97862.61212.61213.96033.9603
C41.52782.44012.39211.45333.22061.10331.10332.03002.0300
N52.52262.87463.70191.45334.39442.10542.10541.02401.0240
H61.88012.29290.97863.22064.39443.49893.49894.53094.5309
H72.13863.13302.61211.10332.10543.49891.75252.42082.9497
H82.13863.13302.61211.10332.10543.49891.75252.94972.4208
H92.70972.77913.96032.03001.02404.53092.42082.94971.6208
H102.70972.77913.96032.03001.02404.53092.94972.42081.6208

picture of Glycine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O3 H6 105.615 C1 C4 N5 115.579
C1 C4 H7 107.653 C1 C4 H8 107.653
O2 C1 O3 123.185 O2 C1 C4 125.277
O3 C1 C4 111.538 C4 N5 H9 108.823
C4 N5 H10 108.823 N5 C4 H7 110.123
N5 C4 H8 110.123 H7 C4 H8 105.159
H9 N5 H10 104.627
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.250      
2 O -0.304      
3 O -0.290      
4 C -0.192      
5 N -0.418      
6 H 0.242      
7 H 0.161      
8 H 0.161      
9 H 0.195      
10 H 0.195      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.664 0.983 0.000 1.186
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.189 -2.473 0.000
y -2.473 -29.885 0.000
z 0.000 0.000 -27.353
Traceless
 xyz
x -3.570 -2.473 0.000
y -2.473 -0.113 0.000
z 0.000 0.000 3.684
Polar
3z2-r27.367
x2-y2-2.305
xy-2.473
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.940 -0.382 0.000
y -0.382 6.440 0.000
z 0.000 0.000 4.140


<r2> (average value of r2) Å2
<r2> 118.954
(<r2>)1/2 10.907