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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: MP2=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 MP2=FULL/6-31G
 hartrees
Energy at 0K-132.088423
Energy at 298.15K-132.090201
HF Energy-131.795198
Nuclear repulsion energy58.599296
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 MP2=FULL/6-31G
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' 3654 3472 46.11      
2 A' 3506 3331 57.40      
3 A' 2206 2095 83.08      
4 A' 1744 1657 49.91      
5 A' 1079 1025 17.18      
6 A' 561 533 117.43      
7 A' 417 396 6.08      
8 A' 240 228 452.19      
9 A" 3780 3592 43.93      
10 A" 1214 1153 7.93      
11 A" 658 626 45.84      
12 A" 338 321 8.34      

Unscaled Zero Point Vibrational Energy (zpe) 9698.1 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 9214.2 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 MP2=FULL/6-31G
ABC
10.79938 0.30162 0.29409

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.382 1.343 0.000
C2 0.000 0.170 0.000
N3 -0.267 -1.169 0.000
H4 0.517 2.402 0.000
H5 -0.472 -1.649 0.861
H6 -0.472 -1.649 -0.861

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.23392.59511.06713.22913.2291
C21.23391.36582.29082.06762.0676
N32.59511.36583.65621.00731.0073
H41.06712.29083.65624.25814.2581
H53.22912.06761.00734.25811.7230
H63.22912.06761.00734.25811.7230

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 173.204 C2 C1 H4 169.187
C2 N3 H5 120.461 C2 N3 H6 120.461
H5 N3 H6 117.579
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability