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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: CCSD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD/6-31G*
 hartrees
Energy at 0K-132.274942
Energy at 298.15K-132.276957
HF Energy-131.842916
Nuclear repulsion energy58.943658
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 CCSD/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' 3535 3338 9.79      
2 A' 3509 3314 63.48      
3 A' 2266 2140 53.56      
4 A' 1705 1610 32.34      
5 A' 1073 1013 6.88      
6 A' 764 721 260.36      
7 A' 494 467 64.37      
8 A' 355 335 21.06      
9 A" 3626 3424 18.04      
10 A" 1248 1179 0.02      
11 A" 607 573 36.84      
12 A" 309 291 1.40      

Unscaled Zero Point Vibrational Energy (zpe) 9745.0 cm-1
Scaled (by 0.9443) Zero Point Vibrational Energy (zpe) 9202.2 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 CCSD/6-31G*
ABC
9.86945 0.30620 0.30033

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.071 1.375 0.000
C2 0.000 0.164 0.000
N3 0.043 -1.209 0.000
H4 0.036 2.442 0.000
H5 -0.384 -1.609 0.831
H6 -0.384 -1.609 -0.831

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21262.58381.06713.13093.1309
C21.21261.37382.27741.99591.9959
N32.58381.37383.65021.01671.0167
H41.06712.27743.65024.15634.1563
H53.13091.99591.01674.15631.6621
H63.13091.99591.01674.15631.6621

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 174.818 C2 C1 H4 174.743
C2 N3 H5 112.353 C2 N3 H6 112.353
H5 N3 H6 109.655
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability