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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: B3PW91/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/TZVP
 hartrees
Energy at 0K-132.681639
Energy at 298.15K-132.683739
HF Energy-132.681639
Nuclear repulsion energy59.627215
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 B3PW91/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' 3564 3437 20.01      
2 A' 3494 3369 100.51      
3 A' 2257 2177 128.89      
4 A' 1642 1583 36.70      
5 A' 1102 1062 18.72      
6 A' 556 536 167.85      
7 A' 488 470 183.30      
8 A' 418 403 15.82      
9 A" 3654 3523 40.77      
10 A" 1190 1148 0.23      
11 A" 699 674 44.45      
12 A" 365 352 10.46      

Unscaled Zero Point Vibrational Energy (zpe) 9713.7 cm-1
Scaled (by 0.9643) Zero Point Vibrational Energy (zpe) 9367.0 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 B3PW91/TZVP
ABC
10.45448 0.31395 0.30689

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.020 1.363 0.000
C2 0.000 0.159 0.000
N3 0.089 -1.181 0.000
H4 -0.048 2.425 0.000
H5 -0.227 -1.643 0.840
H6 -0.227 -1.643 -0.840

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20372.54651.06223.12763.1276
C21.20371.34362.26592.00122.0012
N32.54651.34363.60861.00921.0092
H41.06222.26593.60864.15714.1571
H53.12762.00121.00924.15711.6807
H63.12762.00121.00924.15711.6807

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 177.170 C2 C1 H4 179.482
C2 N3 H5 115.817 C2 N3 H6 115.817
H5 N3 H6 112.753
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.500      
2 C 0.185      
3 N -0.340      
4 H 0.153      
5 H 0.251      
6 H 0.251      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.042 -1.594 0.000 1.904
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.598 1.818 0.000
y 1.818 -12.040 0.000
z 0.000 0.000 -16.994
Traceless
 xyz
x -6.081 1.818 0.000
y 1.818 6.756 0.000
z 0.000 0.000 -0.674
Polar
3z2-r2-1.349
x2-y2-8.558
xy1.818
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.587 -0.044 0.000
y -0.044 6.967 0.000
z 0.000 0.000 2.713


<r2> (average value of r2) Å2
<r2> 44.249
(<r2>)1/2 6.652