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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: CISD/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CISD/Def2TZVPP
 hartrees
Energy at 0K-132.377569
Energy at 298.15K-132.379906
HF Energy-131.908223
Nuclear repulsion energy59.783735
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 CISD/Def2TZVPP
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' 3678 3678 27.46      
2 A' 3574 3574 91.51      
3 A' 2323 2323 107.27      
4 A' 1703 1703 28.68      
5 A' 1104 1104 15.33      
6 A' 693 693 199.14      
7 A' 582 582 98.78      
8 A' 467 467 25.10      
9 A" 3769 3769 43.66      
10 A" 1256 1256 0.34      
11 A" 755 755 42.18      
12 A" 391 391 8.00      

Unscaled Zero Point Vibrational Energy (zpe) 10147.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10147.1 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 CISD/Def2TZVPP
ABC
10.33222 0.31481 0.30836

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.069 1.356 0.000
C2 0.000 0.164 0.000
N3 0.139 -1.183 0.000
H4 -0.130 2.409 0.000
H5 -0.215 -1.622 0.826
H6 -0.215 -1.622 -0.826

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.19432.54741.05523.09393.0939
C21.19431.35382.24941.97941.9794
N32.54741.35383.60241.00071.0007
H41.05522.24943.60244.11604.1160
H53.09391.97941.00074.11601.6524
H63.09391.97941.00074.11601.6524

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 177.405 C2 C1 H4 179.973
C2 N3 H5 113.578 C2 N3 H6 113.578
H5 N3 H6 111.307
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability