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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: CCSD(T)/cc-pVTZ

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)/cc-pVTZ
 hartrees
Energy at 0K-132.458315
Energy at 298.15K-132.460437
HF Energy-131.900940
Nuclear repulsion energy59.166958
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)/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3543 3453        
2 A' 3481 3394        
3 A' 2207 2151        
4 A' 1648 1606        
5 A' 1056 1029        
6 A' 720 701        
7 A' 497 485        
8 A' 388 379        
9 A" 3632 3541        
10 A" 1223 1192        
11 A" 651 635        
12 A" 345 336        

Unscaled Zero Point Vibrational Energy (zpe) 9695.2 cm-1
Scaled (by 0.9748) Zero Point Vibrational Energy (zpe) 9450.9 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)/cc-pVTZ
ABC
10.00202 0.30826 0.30231

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.032 1.372 0.000
C2 0.000 0.162 0.000
N3 0.118 -1.200 0.000
H4 -0.067 2.433 0.000
H5 -0.282 -1.619 0.828
H6 -0.282 -1.619 -0.828

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21092.57691.06163.11433.1143
C21.21091.36712.27251.98441.9844
N32.57691.36713.63821.01041.0104
H41.06162.27253.63824.14214.1421
H53.11431.98441.01044.14211.6554
H63.11431.98441.01044.14211.6554

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.578 C2 C1 H4 179.639
C2 N3 H5 112.294 C2 N3 H6 112.294
H5 N3 H6 110.009
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability