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 HCCNH2 (Ethynamine)

using model chemistry: B97D3/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B97D3/STO-3G
 hartrees
Energy at 0K-130.928381
Energy at 298.15K-130.930323
HF Energy-130.928381
Nuclear repulsion energy57.682022
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 B97D3/STO-3G
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' 3622 3622 147.02      
2 A' 3383 3383 3.21      
3 A' 2367 2367 5.81      
4 A' 1766 1766 7.37      
5 A' 1066 1066 15.79      
6 A' 760 760 126.05      
7 A' 542 542 33.18      
8 A' 361 361 8.98      
9 A" 3564 3564 0.55      
10 A" 1315 1315 0.73      
11 A" 701 701 14.43      
12 A" 336 336 1.95      

Unscaled Zero Point Vibrational Energy (zpe) 9891.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9891.4 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 B97D3/STO-3G
ABC
8.56386 0.29485 0.29033

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.132 1.387 0.000
C2 0.000 0.179 0.000
N3 0.014 -1.246 0.000
H4 0.218 2.466 0.000
H5 -0.555 -1.571 0.842
H6 -0.555 -1.571 -0.842

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21522.63581.08273.15183.1518
C21.21521.42522.29772.02022.0202
N32.63581.42523.71811.06701.0670
H41.08272.29773.71814.19654.1965
H53.15182.02021.06704.19651.6842
H63.15182.02021.06704.19651.6842

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 173.195 C2 C1 H4 178.330
C2 N3 H5 107.440 C2 N3 H6 107.440
H5 N3 H6 104.229
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.153      
2 C 0.003      
3 N -0.342      
4 H 0.105      
5 H 0.193      
6 H 0.193      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.658 -0.651 0.000 1.781
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.012 2.972 0.000
y 2.972 -13.109 0.000
z 0.000 0.000 -15.641
Traceless
 xyz
x -2.637 2.972 0.000
y 2.972 3.218 0.000
z 0.000 0.000 -0.581
Polar
3z2-r2-1.161
x2-y2-3.903
xy2.972
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.650 0.566 0.000
y 0.566 4.319 0.000
z 0.000 0.000 1.144


<r2> (average value of r2) Å2
<r2> 45.341
(<r2>)1/2 6.734