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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: MP2/6-311+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 MP2/6-311+G(3df,2p)
 hartrees
Energy at 0K-132.416485
Energy at 298.15K-132.418614
HF Energy-131.899916
Nuclear repulsion energy59.291653
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 MP2/6-311+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' 3580 3377 24.87      
2 A' 3502 3303 88.12      
3 A' 2197 2073 107.84      
4 A' 1644 1551 27.69      
5 A' 1071 1010 14.52      
6 A' 665 627 188.56      
7 A' 514 485 95.86      
8 A' 403 380 6.40      
9 A" 3682 3473 49.42      
10 A" 1204 1135 0.44      
11 A" 654 617 42.49      
12 A" 351 331 6.25      

Unscaled Zero Point Vibrational Energy (zpe) 9732.5 cm-1
Scaled (by 0.9434) Zero Point Vibrational Energy (zpe) 9181.7 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 MP2/6-311+G(3df,2p)
ABC
10.19297 0.30979 0.30346

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.007 1.372 0.000
C2 0.000 0.159 0.000
N3 0.090 -1.195 0.000
H4 -0.021 2.432 0.000
H5 -0.285 -1.627 0.832
H6 -0.285 -1.627 -0.832

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21232.56811.06113.12403.1240
C21.21231.35692.27341.99071.9907
N32.56811.35693.62891.00951.0095
H41.06112.27343.62894.15204.1520
H53.12401.99071.00954.15201.6636
H63.12401.99071.00954.15201.6636

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.509 C2 C1 H4 179.536
C2 N3 H5 113.729 C2 N3 H6 113.729
H5 N3 H6 110.977
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability