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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: CCSD(T)=FULL/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(T)=FULL/6-31G*
 hartrees
Energy at 0K-132.303709
Energy at 298.15K-132.305707
HF Energy-131.842036
Nuclear repulsion energy58.841133
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(T)=FULL/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' 3506 3403        
2 A' 3490 3388        
3 A' 2227 2162        
4 A' 1695 1646        
5 A' 1063 1032        
6 A' 761 739        
7 A' 487 473        
8 A' 358 348        
9 A" 3599 3493        
10 A" 1240 1203        
11 A" 593 575        
12 A" 305 296        

Unscaled Zero Point Vibrational Energy (zpe) 9662.4 cm-1
Scaled (by 0.9707) Zero Point Vibrational Energy (zpe) 9379.3 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(T)=FULL/6-31G*
ABC
9.79926 0.30524 0.29945

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.123 1.375 0.000
C2 0.000 0.163 0.000
N3 0.005 -1.211 0.000
H4 0.101 2.443 0.000
H5 -0.437 -1.598 0.832
H6 -0.437 -1.598 -0.832

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21752.58791.06833.13713.1371
C21.21751.37402.28151.99621.9962
N32.58791.37403.65451.01831.0183
H41.06832.28153.65454.16024.1602
H53.13711.99621.01834.16021.6634
H63.13711.99621.01834.16021.6634

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 173.988 C2 C1 H4 172.984
C2 N3 H5 112.258 C2 N3 H6 112.258
H5 N3 H6 109.520
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability