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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-132.291235
Energy at 298.15K-132.293255
HF Energy-131.841076
Nuclear repulsion energy58.746189
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 MP4/6-31G*
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' 3509 3350        
2 A' 3496 3338        
3 A' 2194 2095        
4 A' 1694 1618        
5 A' 1061 1013        
6 A' 765 731        
7 A' 498 476        
8 A' 386 369        
9 A" 3604 3441        
10 A" 1237 1181        
11 A" 584 557        
12 A" 296 283        

Unscaled Zero Point Vibrational Energy (zpe) 9661.9 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 9225.2 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 MP4/6-31G*
ABC
9.74505 0.30423 0.29854

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.194 1.370 0.000
C2 0.000 0.163 0.000
N3 -0.049 -1.211 0.000
H4 0.197 2.438 0.000
H5 -0.508 -1.580 0.831
H6 -0.508 -1.580 -0.831

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.22252.59231.06813.14423.1442
C21.22251.37482.28361.99671.9967
N32.59231.37483.65721.01851.0185
H41.06812.28363.65724.16324.1632
H53.14421.99671.01854.16321.6628
H63.14421.99671.01854.16321.6628

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 172.927 C2 C1 H4 171.023
C2 N3 H5 112.233 C2 N3 H6 112.233
H5 N3 H6 109.427
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability