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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: MP4/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-132.461341
Energy at 298.15K-132.463438
HF Energy-131.900345
Nuclear repulsion energy59.091173
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/cc-pVTZ
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' 3534 3426        
2 A' 3482 3375        
3 A' 2172 2105        
4 A' 1643 1592        
5 A' 1051 1019        
6 A' 721 699        
7 A' 493 478        
8 A' 376 364        
9 A" 3627 3515        
10 A" 1219 1181        
11 A" 638 619        
12 A" 343 333        

Unscaled Zero Point Vibrational Energy (zpe) 9650.2 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 9353.0 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/cc-pVTZ
ABC
9.98764 0.30745 0.30153

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.020 1.375 0.000
C2 0.000 0.160 0.000
N3 0.109 -1.202 0.000
H4 -0.049 2.437 0.000
H5 -0.295 -1.619 0.828
H6 -0.295 -1.619 -0.828

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21522.58071.06163.11863.1186
C21.21521.36682.27671.98441.9844
N32.58071.36683.64201.01111.0111
H41.06162.27673.64204.14634.1463
H53.11861.98441.01114.14631.6557
H63.11861.98441.01114.14631.6557

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.394 C2 C1 H4 179.417
C2 N3 H5 112.268 C2 N3 H6 112.268
H5 N3 H6 109.918
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability