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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CBS-Q
 hartrees
Energy at 0K-132.458288
Energy at 298.15K-132.453475
HF Energy-131.843320
Nuclear repulsion energy59.810254
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 CBS-Q
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' 3782 3782 22.95      
2 A' 3660 3660 82.77      
3 A' 2427 2427 83.21      
4 A' 1822 1822 35.39      
5 A' 1133 1133 13.30      
6 A' 741 741 268.85      
7 A' 605 605 104.34      
8 A' 498 498 30.92      
9 A" 3878 3878 34.46      
10 A" 1328 1328 0.00      
11 A" 807 807 36.01      
12 A" 418 418 5.27      

Unscaled Zero Point Vibrational Energy (zpe) 10548.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10548.8 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 CBS-Q
ABC
9.93468 0.30476 0.29885

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.209 1.335 0.000
C2 0.000 0.169 0.000
N3 0.258 -1.166 0.000
H4 -0.419 2.371 0.000
H5 -0.067 -1.615 0.828
H6 -0.067 -1.615 -0.828

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.18462.54371.05723.06713.0671
C21.18461.35912.24171.96771.9677
N32.54371.35913.60080.99670.9967
H41.05722.24173.60084.08614.0861
H53.06711.96770.99674.08611.6561
H63.06711.96770.99674.08611.6561

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 179.207 C2 C1 H4 178.668
C2 N3 H5 112.374 C2 N3 H6 112.374
H5 N3 H6 112.367
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability