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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: PBEPBEultrafine/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at PBEPBEultrafine/3-21G
 hartrees
Energy at 0K-188.002910
Energy at 298.15K 
HF Energy-188.002910
Nuclear repulsion energy116.285068
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 PBEPBEultrafine/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 3470 3438 0.32      
2 A 3355 3324 0.21      
3 A 3072 3044 0.16      
4 A 1689 1674 0.23      
5 A 1655 1639 15.35      
6 A 1313 1301 1.94      
7 A 1260 1248 0.02      
8 A 1003 994 0.98      
9 A 902 894 80.62      
10 A 604 598 275.16      
11 A 547 542 9.52      
12 A 360 357 0.85      
13 A 245 243 26.76      
14 B 3469 3437 1.73      
15 B 3351 3321 0.28      
16 B 3078 3050 54.28      
17 B 1657 1642 52.61      
18 B 1366 1354 3.17      
19 B 1166 1155 80.12      
20 B 1110 1100 3.46      
21 B 758 751 16.61      
22 B 531 526 389.68      
23 B 345 342 57.29      
24 B 222 220 186.36      

Unscaled Zero Point Vibrational Energy (zpe) 18262.6 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 18096.4 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 PBEPBEultrafine/3-21G
ABC
1.42063 0.12969 0.12053

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.315 0.600 0.053
C2 -0.315 -0.600 0.053
N3 -0.315 1.863 -0.106
N4 0.315 -1.863 -0.106
H5 1.411 0.640 0.064
H6 -1.411 -0.640 0.064
H7 -1.340 1.830 -0.168
H8 1.340 -1.830 -0.168
H9 0.017 2.603 0.528
H10 -0.017 -2.603 0.528

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.35531.41992.46821.09752.12552.07382.64692.07963.2549
C21.35532.46821.41992.12551.09752.64692.07383.25492.0796
N31.41992.46823.77882.12222.73801.02824.04741.02884.5203
N42.46821.41993.77882.73802.12224.04741.02824.52031.0288
H51.09752.12552.12222.73803.09953.00702.48192.45203.5738
H62.12551.09752.73802.12223.09952.48193.00703.57382.4520
H72.07382.64691.02824.04743.00702.48194.53681.70984.6781
H82.64692.07384.04741.02822.48193.00704.53684.67811.7098
H92.07963.25491.02884.52032.45203.57381.70984.67815.2057
H103.25492.07964.52031.02883.57382.45204.67811.70985.2057

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.575 C1 C2 H6 119.759
C1 N3 H7 114.860 C1 N3 H9 115.337
C2 C1 N3 125.575 C2 C1 H5 119.759
C2 N4 H8 114.860 C2 N4 H10 115.337
N3 C1 H5 114.313 N4 C2 H6 114.313
H7 N3 H9 112.444 H8 N4 H10 112.444
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.045      
2 C -0.045      
3 N -0.699      
4 N -0.699      
5 H 0.180      
6 H 0.180      
7 H 0.283      
8 H 0.283      
9 H 0.282      
10 H 0.282      


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 2.088 2.088
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.165 -2.482 0.000
y -2.482 -20.092 0.000
z 0.000 0.000 -28.156
Traceless
 xyz
x 3.959 -2.482 0.000
y -2.482 4.069 0.000
z 0.000 0.000 -8.028
Polar
3z2-r2-16.056
x2-y2-0.073
xy-2.482
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.836 0.011 0.000
y 0.011 8.629 0.000
z 0.000 0.000 1.876


<r2> (average value of r2) Å2
<r2> 99.187
(<r2>)1/2 9.959