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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: G3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at G3
 hartrees
Energy at 0K-132.592845
Energy at 298.15K-132.588028
HF Energy-131.845571
Nuclear repulsion energy59.872631
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 HF/6-31G*
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' 3771 3553 24.44      
2 A' 3673 3461 79.47      
3 A' 2431 2291 83.47      
4 A' 1815 1710 36.66      
5 A' 1138 1072 12.87      
6 A' 752 709 275.32      
7 A' 645 608 91.28      
8 A' 506 477 41.75      
9 A" 3868 3645 36.52      
10 A" 1330 1254 0.03      
11 A" 832 784 40.90      
12 A" 426 401 5.25      

Unscaled Zero Point Vibrational Energy (zpe) 10594.5 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 9982.1 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 MP2=FULL/6-31G*
ABC
9.92727 0.30658 0.30064

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.104 1.374 0.000
C2 0.000 0.161 0.000
N3 0.016 -1.206 0.000
H4 0.084 2.439 0.000
H5 -0.411 -1.604 0.831
H6 -0.411 -1.604 -0.831

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21802.58221.06433.13463.1346
C21.21801.36722.27931.99341.9934
N32.58221.36723.64551.01551.0155
H41.06432.27933.64554.15664.1566
H53.13461.99341.01554.15661.6623
H63.13461.99341.01554.15661.6623

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 179.197 C2 C1 H4 179.042
C2 N3 H5 112.353 C2 N3 H6 112.353
H5 N3 H6 111.971
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability