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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: QCISD(T)/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD(T)/cc-pVDZ
 hartrees
Energy at 0K-132.322885
Energy at 298.15K-132.324912
HF Energy-131.858183
Nuclear repulsion energy58.447660
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 QCISD(T)/cc-pVDZ
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 3342        
2 A' 3474 3311        
3 A' 2191 2089        
4 A' 1635 1558        
5 A' 1044 995        
6 A' 801 763        
7 A' 486 463        
8 A' 327 311        
9 A" 3596 3428        
10 A" 1229 1172        
11 A" 625 596        
12 A" 318 303        

Unscaled Zero Point Vibrational Energy (zpe) 9616.3 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 9165.3 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 QCISD(T)/cc-pVDZ
ABC
9.56177 0.30090 0.29567

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.032 1.389 0.000
C2 0.000 0.160 0.000
N3 0.130 -1.217 0.000
H4 -0.078 2.465 0.000
H5 -0.322 -1.617 0.827
H6 -0.322 -1.617 -0.827

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.22962.61101.07693.13033.1303
C21.22961.38292.30641.98521.9852
N32.61101.38293.68781.02321.0232
H41.07692.30643.68784.17124.1712
H53.13031.98521.02324.17121.6532
H63.13031.98521.02324.17121.6532

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.076 C2 C1 H4 179.030
C2 N3 H5 110.296 C2 N3 H6 110.296
H5 N3 H6 107.780
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability