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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: CCSD(T)/6-311+G(3df,2p)

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)/6-311+G(3df,2p)
 hartrees
Energy at 0K-132.455968
Energy at 298.15K-132.458077
HF Energy-131.899847
Nuclear repulsion energy59.175607
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)/6-311+G(3df,2p)
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' 3553 3506        
2 A' 3467 3421        
3 A' 2198 2169        
4 A' 1649 1627        
5 A' 1056 1042        
6 A' 689 680        
7 A' 500 493        
8 A' 394 388        
9 A" 3645 3597        
10 A" 1211 1195        
11 A" 659 650        
12 A" 339 335        

Unscaled Zero Point Vibrational Energy (zpe) 9679.8 cm-1
Scaled (by 0.9869) Zero Point Vibrational Energy (zpe) 9552.9 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)/6-311+G(3df,2p)
ABC
10.07964 0.30848 0.30232

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.022 1.372 0.000
C2 0.000 0.162 0.000
N3 0.106 -1.199 0.000
H4 -0.046 2.436 0.000
H5 -0.280 -1.626 0.831
H6 -0.280 -1.626 -0.831

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21062.57431.06363.12253.1225
C21.21061.36482.27421.99181.9918
N32.57431.36483.63761.01111.0111
H41.06362.27423.63764.15294.1529
H53.12251.99181.01114.15291.6624
H63.12251.99181.01114.15291.6624

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.617 C2 C1 H4 179.802
C2 N3 H5 113.086 C2 N3 H6 113.086
H5 N3 H6 110.586
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability