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: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-284.442288
Energy at 298.15K-284.449232
Nuclear repulsion energy179.939298
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' 3817 3651 59.27      
2 A' 3545 3391 1.23      
3 A' 3069 2936 17.38      
4 A' 1867 1786 296.69      
5 A' 1687 1614 22.23      
6 A' 1459 1395 16.03      
7 A' 1421 1359 33.58      
8 A' 1321 1264 8.92      
9 A' 1190 1139 132.07      
10 A' 1159 1109 162.40      
11 A' 941 901 132.84      
12 A' 842 805 98.21      
13 A' 649 620 8.20      
14 A' 471 450 32.65      
15 A' 258 247 10.25      
16 A" 3617 3461 3.22      
17 A" 3107 2972 8.34      
18 A" 1394 1334 0.44      
19 A" 1189 1138 1.31      
20 A" 928 888 4.35      
21 A" 671 642 99.87      
22 A" 513 490 34.77      
23 A" 227 218 47.94      
24 A" 61 58 6.37      

Unscaled Zero Point Vibrational Energy (zpe) 17700.0 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 16933.6 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
0.34881 0.13030 0.09799

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.550 0.000
O2 1.170 0.821 0.000
O3 -0.969 1.482 0.000
C4 -0.572 -0.853 0.000
N5 0.400 -1.917 0.000
H6 -0.528 2.340 0.000
H7 -1.230 -0.941 0.869
H8 -1.230 -0.941 -0.869
H9 1.006 -1.823 0.806
H10 1.006 -1.823 -0.806

Atom - Atom Distances (Å)
  C1 O2 O3 C4 N5 H6 H7 H8 H9 H10
C11.20071.34461.51522.49911.86652.11962.11962.70022.7002
O21.20072.23842.41612.84442.27773.10193.10192.76902.7690
O31.34462.23842.36873.66440.96512.58772.58773.93353.9335
C41.51522.41612.36871.44113.19371.09401.09402.02002.0200
N52.49912.84443.66441.44114.35712.08942.08941.01281.0128
H61.86652.27770.96513.19374.35713.46663.46664.50914.5091
H72.11963.10192.58771.09402.08943.46661.73892.40472.9300
H82.11963.10192.58771.09402.08943.46661.73892.93002.4047
H92.70022.76903.93352.02001.01284.50912.40472.93001.6118
H102.70022.76903.93352.02001.01284.50912.93002.40471.6118

picture of Glycine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O3 H6 106.673 C1 C4 N5 115.398
C1 C4 H7 107.558 C1 C4 H8 107.558
O2 C1 O3 123.043 O2 C1 C4 125.249
O3 C1 C4 111.707 C4 N5 H9 109.571
C4 N5 H10 109.571 N5 C4 H7 110.266
N5 C4 H8 110.266 H7 C4 H8 105.260
H9 N5 H10 105.449
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 C 0.317      
2 O -0.351      
3 O -0.330      
4 C -0.172      
5 N -0.450      
6 H 0.258      
7 H 0.163      
8 H 0.163      
9 H 0.202      
10 H 0.202      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.741 0.974 0.000 1.224
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.144 -2.555 0.000
y -2.555 -29.540 0.000
z 0.000 0.000 -26.974
Traceless
 xyz
x -3.887 -2.555 0.000
y -2.555 0.019 0.000
z 0.000 0.000 3.868
Polar
3z2-r27.736
x2-y2-2.604
xy-2.555
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.624 -0.297 0.000
y -0.297 5.822 0.000
z 0.000 0.000 3.971


<r2> (average value of r2) Å2
<r2> 116.906
(<r2>)1/2 10.812