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: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-282.775292
Energy at 298.15K-282.782136
Nuclear repulsion energy177.995498
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 mPW1PW91/3-21G*
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' 3549 3370 16.96      
2 A' 3470 3295 0.51      
3 A' 3097 2941 9.94      
4 A' 1818 1727 180.60      
5 A' 1747 1659 21.85      
6 A' 1501 1425 26.99      
7 A' 1410 1339 35.48      
8 A' 1345 1277 1.55      
9 A' 1153 1095 23.81      
10 A' 1111 1055 224.11      
11 A' 857 814 22.74      
12 A' 751 713 297.23      
13 A' 634 602 2.82      
14 A' 461 438 39.53      
15 A' 238 226 13.82      
16 A" 3563 3384 1.89      
17 A" 3139 2980 4.13      
18 A" 1401 1331 0.50      
19 A" 1221 1159 0.80      
20 A" 930 884 5.45      
21 A" 670 636 128.34      
22 A" 516 490 52.96      
23 A" 230 219 56.94      
24 A" 69 65 9.97      

Unscaled Zero Point Vibrational Energy (zpe) 17439.9 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 16560.9 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 mPW1PW91/3-21G*
ABC
0.33537 0.12968 0.09667

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.542 0.000
O2 1.187 0.834 0.000
O3 -1.005 1.475 0.000
C4 -0.580 -0.859 0.000
N5 0.433 -1.905 0.000
H6 -0.603 2.383 0.000
H7 -1.228 -0.958 0.877
H8 -1.228 -0.958 -0.877
H9 1.024 -1.852 0.831
H10 1.024 -1.852 -0.831

Atom - Atom Distances (Å)
  C1 O2 O3 C4 N5 H6 H7 H8 H9 H10
C11.22231.37151.51612.48521.93762.12772.12772.73302.7330
O21.22232.28382.44672.84092.36753.13233.13232.81612.8161
O31.37152.28382.37263.67360.99312.59642.59643.98453.9845
C41.51612.44672.37261.45613.24241.09481.09482.06092.0609
N52.48522.84093.67361.45614.41202.10312.10311.02081.0208
H61.93762.36750.99313.24244.41203.51103.51104.61244.6124
H72.12773.13232.59641.09482.10313.51101.75372.42262.9636
H82.12773.13232.59641.09482.10313.51101.75372.96362.4226
H92.73302.81613.98452.06091.02084.61242.42262.96361.6617
H102.73302.81613.98452.06091.02084.61242.96362.42261.6617

picture of Glycine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O3 H6 109.006 C1 C4 N5 113.459
C1 C4 H7 108.077 C1 C4 H8 108.077
O2 C1 O3 123.304 O2 C1 C4 126.291
O3 C1 C4 110.405 C4 N5 H9 111.402
C4 N5 H10 111.402 N5 C4 H7 110.261
N5 C4 H8 110.261 H7 C4 H8 106.429
H9 N5 H10 108.964
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.614      
2 O -0.497      
3 O -0.580      
4 C -0.370      
5 N -0.681      
6 H 0.380      
7 H 0.271      
8 H 0.271      
9 H 0.295      
10 H 0.295      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.495 1.167 0.000 1.268
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.985 -2.735 0.000
y -2.735 -29.016 0.000
z 0.000 0.000 -26.618
Traceless
 xyz
x -4.167 -2.735 0.000
y -2.735 0.285 0.000
z 0.000 0.000 3.882
Polar
3z2-r27.764
x2-y2-2.968
xy-2.735
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.843 -0.416 0.000
y -0.416 4.871 0.000
z 0.000 0.000 3.177


<r2> (average value of r2) Å2
<r2> 118.278
(<r2>)1/2 10.876