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: M06-2X/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 M06-2X/3-21G*
 hartrees
Energy at 0K-131.895420
Energy at 298.15K-131.897833
HF Energy-131.895420
Nuclear repulsion energy59.530030
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 M06-2X/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' 3600 3410 12.75      
2 A' 3587 3398 125.67      
3 A' 2330 2207 108.27      
4 A' 1683 1594 63.32      
5 A' 1147 1087 21.38      
6 A' 782 740 134.19      
7 A' 604 572 1.15      
8 A' 355 336 426.50      
9 A" 3705 3509 59.87      
10 A" 1183 1121 10.85      
11 A" 941 891 29.26      
12 A" 491 465 18.32      

Unscaled Zero Point Vibrational Energy (zpe) 10203.7 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 9664.9 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 M06-2X/3-21G*
ABC
11.10067 0.31298 0.30440

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.002 1.369 0.000
C2 0.000 0.162 0.000
N3 0.003 -1.175 0.000
H4 -0.004 2.429 0.000
H5 -0.000 -1.696 0.868
H6 -0.000 -1.696 -0.868

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20702.54401.05973.18583.1858
C21.20701.33702.26672.05102.0510
N32.54401.33703.60371.01251.0125
H41.05972.26673.60374.21524.2152
H53.18582.05101.01254.21521.7360
H63.18582.05101.01254.21521.7360

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 179.999 C2 C1 H4 179.972
C2 N3 H5 120.984 C2 N3 H6 120.984
H5 N3 H6 118.031
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.048      
2 C 0.121      
3 N -0.986      
4 H 0.252      
5 H 0.330      
6 H 0.330      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.012 -1.920 0.000 1.920
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.309 0.013 0.000
y 0.013 -11.060 0.000
z 0.000 0.000 -16.478
Traceless
 xyz
x -6.540 0.013 0.000
y 0.013 7.333 0.000
z 0.000 0.000 -0.794
Polar
3z2-r2-1.588
x2-y2-9.249
xy0.013
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.997 -0.008 0.000
y -0.008 5.920 0.000
z 0.000 0.000 1.706


<r2> (average value of r2) Å2
<r2> 44.189
(<r2>)1/2 6.647