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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: mPW1PW91/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-311+G(3df,2p)
 hartrees
Energy at 0K-132.698466
Energy at 298.15K-132.700644
HF Energy-132.698466
Nuclear repulsion energy59.738848
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 mPW1PW91/6-311+G(3df,2p)
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' 3585 3585 18.75      
2 A' 3496 3496 97.73      
3 A' 2262 2262 138.58      
4 A' 1641 1641 29.63      
5 A' 1104 1104 18.09      
6 A' 592 592 163.78      
7 A' 502 502 137.68      
8 A' 445 445 10.28      
9 A" 3672 3672 44.95      
10 A" 1195 1195 0.18      
11 A" 711 711 41.23      
12 A" 378 378 10.17      

Unscaled Zero Point Vibrational Energy (zpe) 9791.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9791.6 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 mPW1PW91/6-311+G(3df,2p)
ABC
10.41168 0.31511 0.30823

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.026 1.359 0.000
C2 0.000 0.160 0.000
N3 0.097 -1.180 0.000
H4 -0.055 2.419 0.000
H5 -0.236 -1.634 0.835
H6 -0.236 -1.634 -0.835

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.19992.54251.06073.11513.1151
C21.19991.34342.26061.99291.9929
N32.54251.34343.60301.00751.0075
H41.06072.26063.60304.14304.1430
H53.11511.99291.00754.14301.6709
H63.11511.99291.00754.14301.6709

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 177.072 C2 C1 H4 179.629
C2 N3 H5 115.186 C2 N3 H6 115.186
H5 N3 H6 112.032
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.058      
2 C 0.222      
3 N -0.871      
4 H 0.199      
5 H 0.196      
6 H 0.196      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.971 -1.517 0.000 1.801
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.663 1.773 0.000
y 1.773 -12.265 0.000
z 0.000 0.000 -17.172
Traceless
 xyz
x -5.944 1.773 0.000
y 1.773 6.652 0.000
z 0.000 0.000 -0.708
Polar
3z2-r2-1.416
x2-y2-8.398
xy1.773
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.742 -0.062 0.000
y -0.062 7.256 0.000
z 0.000 0.000 3.703


<r2> (average value of r2) Å2
<r2> 44.196
(<r2>)1/2 6.648