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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-132.267285
Energy at 298.15K-132.269347
HF Energy-131.843684
Nuclear repulsion energy59.109136
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 MP3/6-31G*
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' 3578 3358 14.39      
2 A' 3547 3329 72.10      
3 A' 2315 2172 62.18      
4 A' 1712 1607 35.14      
5 A' 1087 1020 8.36      
6 A' 756 710 266.85      
7 A' 506 475 69.20      
8 A' 371 349 19.93      
9 A" 3668 3443 23.03      
10 A" 1252 1175 0.01      
11 A" 617 579 39.49      
12 A" 321 301 1.48      

Unscaled Zero Point Vibrational Energy (zpe) 9865.1 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 9259.4 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 MP3/6-31G*
ABC
9.93424 0.30793 0.30196

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.072 1.371 0.000
C2 0.000 0.165 0.000
N3 0.041 -1.205 0.000
H4 0.038 2.435 0.000
H5 -0.380 -1.606 0.830
H6 -0.380 -1.606 -0.830

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20752.57621.06473.12363.1236
C21.20751.37122.26981.99321.9932
N32.57621.37123.64011.01401.0140
H41.06472.26983.64014.14684.1468
H53.12361.99321.01404.14681.6608
H63.12361.99321.01404.14681.6608

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 174.847 C2 C1 H4 174.762
C2 N3 H5 112.506 C2 N3 H6 112.506
H5 N3 H6 109.951
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability