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: B1B95/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/CEP-31G
 hartrees
Energy at 0K-56.015536
Energy at 298.15K-56.022177
Nuclear repulsion energy98.485058
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/CEP-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' 3709 3552 33.73      
2 A' 3620 3466 3.97      
3 A' 3101 2969 21.07      
4 A' 1734 1660 253.37      
5 A' 1696 1624 39.46      
6 A' 1463 1401 32.41      
7 A' 1395 1336 18.43      
8 A' 1292 1237 24.19      
9 A' 1187 1137 3.32      
10 A' 1092 1046 288.13      
11 A' 854 817 16.57      
12 A' 647 619 248.08      
13 A' 588 563 127.61      
14 A' 444 425 55.58      
15 A' 235 225 19.77      
16 A" 3750 3590 7.97      
17 A" 3154 3020 13.94      
18 A" 1346 1289 0.03      
19 A" 1168 1118 0.24      
20 A" 904 865 9.51      
21 A" 644 616 165.55      
22 A" 502 481 44.24      
23 A" 196 188 52.60      
24 A" 62 60 7.51      

Unscaled Zero Point Vibrational Energy (zpe) 17391.8 cm-1
Scaled (by 0.9575) Zero Point Vibrational Energy (zpe) 16652.7 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 B1B95/CEP-31G
ABC
0.32886 0.12435 0.09322

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.556 0.000
O2 1.200 0.882 0.000
O3 -1.024 1.495 0.000
C4 -0.563 -0.880 0.000
N5 0.441 -1.930 0.000
H6 -0.668 2.412 0.000
H7 -1.221 -0.974 0.878
H8 -1.221 -0.974 -0.878
H9 0.996 -2.011 0.846
H10 0.996 -2.011 -0.846

Atom - Atom Distances (Å)
  C1 O2 O3 C4 N5 H6 H7 H8 H9 H10
C11.24371.38941.54162.52411.97272.14572.14572.87982.8798
O21.24372.30712.49202.91222.41473.17503.17503.02033.0203
O31.38942.30712.41863.72440.98412.62792.62794.13324.1332
C41.54162.49202.41861.45243.29321.10181.10182.10362.1036
N52.52412.91223.72441.45244.48092.10872.10871.01521.0152
H61.97272.41470.98413.29324.48093.54183.54184.80034.8003
H72.14573.17502.62791.10182.10873.54181.75622.44812.9940
H82.14573.17502.62791.10182.10873.54181.75622.99402.4481
H92.87983.02034.13322.10361.01524.80032.44812.99401.6917
H102.87983.02034.13322.10361.01524.80032.99402.44811.6917

picture of Glycine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O3 H6 111.293 C1 C4 N5 114.895
C1 C4 H7 107.356 C1 C4 H8 107.356
O2 C1 O3 122.281 O2 C1 C4 126.609
O3 C1 C4 111.109 C4 N5 H9 115.827
C4 N5 H10 115.827 N5 C4 H7 110.541
N5 C4 H8 110.541 H7 C4 H8 105.677
H9 N5 H10 112.848
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.203      
2 O -0.098      
3 O -0.324      
4 C -0.182      
5 N -0.479      
6 H 0.389      
7 H 0.178      
8 H 0.178      
9 H 0.270      
10 H 0.270      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.738 0.600 0.000 0.951
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.787 -3.944 0.000
y -3.944 -28.594 0.000
z 0.000 0.000 -26.821
Traceless
 xyz
x -6.080 -3.944 0.000
y -3.944 1.711 0.000
z 0.000 0.000 4.369
Polar
3z2-r28.738
x2-y2-5.194
xy-3.944
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.441 -0.343 0.000
y -0.343 5.445 0.000
z 0.000 0.000 3.624


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000