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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: mPW1PW91/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/TZVP
 hartrees
Energy at 0K-189.317635
Energy at 298.15K 
HF Energy-189.317635
Nuclear repulsion energy117.984833
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/TZVP
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 3654 3486 2.10      
2 A 3556 3393 1.89      
3 A 3163 3017 0.05      
4 A 1775 1694 1.19      
5 A 1656 1580 24.29      
6 A 1345 1283 0.34      
7 A 1292 1232 0.06      
8 A 1042 994 0.15      
9 A 940 897 71.66      
10 A 779 744 170.45      
11 A 559 533 2.62      
12 A 332 317 3.66      
13 A 248 237 18.87      
14 B 3654 3485 6.18      
15 B 3554 3391 3.02      
16 B 3167 3021 47.68      
17 B 1664 1587 65.49      
18 B 1401 1336 7.67      
19 B 1193 1138 126.44      
20 B 1133 1081 1.38      
21 B 820 782 54.50      
22 B 719 686 349.59      
23 B 344 329 36.09      
24 B 246 235 113.86      

Unscaled Zero Point Vibrational Energy (zpe) 19117.7 cm-1
Scaled (by 0.954) Zero Point Vibrational Energy (zpe) 18238.3 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/TZVP
ABC
1.45739 0.13342 0.12401

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.311 0.589 0.039
C2 -0.311 -0.589 0.039
N3 -0.311 1.842 -0.107
N4 0.311 -1.842 -0.107
H5 1.396 0.633 0.041
H6 -1.396 -0.633 0.041
H7 -1.318 1.791 -0.080
H8 1.318 -1.791 -0.080
H9 0.014 2.527 0.559
H10 -0.014 -2.527 0.559

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.33241.40572.43561.08662.09922.02742.58712.02833.1763
C21.33242.43561.40572.09921.08662.58712.02743.17632.0283
N31.40572.43563.73572.09722.70621.00943.98101.00964.4295
N42.43561.40573.73572.70622.09723.98101.00944.42951.0096
H51.08662.09922.09722.70623.06592.95382.42732.40193.4989
H62.09921.08662.70622.09723.06592.42732.95383.49892.4019
H72.02742.58711.00943.98102.95382.42734.44701.65104.5554
H82.58712.02743.98101.00942.42732.95384.44704.55541.6510
H92.02833.17631.00964.42952.40193.49891.65104.55545.0545
H103.17632.02834.42951.00963.49892.40194.55541.65105.0545

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.604 C1 C2 H6 120.071
C1 N3 H7 113.142 C1 N3 H9 113.207
C2 C1 N3 125.604 C2 C1 H5 120.071
C2 N4 H8 113.142 C2 N4 H10 113.207
N3 C1 H5 113.974 N4 C2 H6 113.974
H7 N3 H9 109.715 H8 N4 H10 109.715
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.119      
2 C -0.119      
3 N -0.396      
4 N -0.396      
5 H 0.100      
6 H 0.100      
7 H 0.201      
8 H 0.201      
9 H 0.214      
10 H 0.214      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 2.119 2.119
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.530 -1.690 0.000
y -1.690 -22.611 0.000
z 0.000 0.000 -28.671
Traceless
 xyz
x 5.110 -1.690 0.000
y -1.690 1.990 0.000
z 0.000 0.000 -7.100
Polar
3z2-r2-14.200
x2-y22.080
xy-1.690
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.567 0.210 0.000
y 0.210 9.123 0.000
z 0.000 0.000 4.163


<r2> (average value of r2) Å2
<r2> 97.304
(<r2>)1/2 9.864