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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: CCSD(T)/6-31G(2df,p)

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)/6-31G(2df,p)
 hartrees
Energy at 0K-132.397033
Energy at 298.15K-132.399130
HF Energy-131.864666
Nuclear repulsion energy59.164347
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)/6-31G(2df,p)
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' 3566 3566        
2 A' 3531 3531        
3 A' 2237 2237        
4 A' 1660 1660        
5 A' 1061 1061        
6 A' 741 741        
7 A' 499 499        
8 A' 371 371        
9 A" 3656 3656        
10 A" 1223 1223        
11 A" 651 651        
12 A" 338 338        

Unscaled Zero Point Vibrational Energy (zpe) 9766.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9766.7 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)/6-31G(2df,p)
ABC
9.95621 0.30836 0.30250

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31G(2df,p)

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 0.121 -1.200 0.000
H4 -0.079 2.432 0.000
H5 -0.287 -1.619 0.826
H6 -0.287 -1.619 -0.826

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21062.57641.06153.11323.1132
C21.21061.36702.27201.98381.9838
N32.57641.36703.63771.01221.0122
H41.06152.27203.63774.13984.1398
H53.11321.98381.01224.13981.6525
H63.11321.98381.01224.13981.6525

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.456 C2 C1 H4 179.034
C2 N3 H5 112.123 C2 N3 H6 112.123
H5 N3 H6 109.427
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability