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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: MP4/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-132.350311
Energy at 298.15K-132.352103
HF Energy-131.866261
Nuclear repulsion energy58.426736
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 3428        
2 A' 3496 3416        
3 A' 2194 2143        
4 A' 1694 1655        
5 A' 1061 1036        
6 A' 765 748        
7 A' 498 487        
8 A' 386 377        
9 A" 3604 3520        
10 A" 1237 1208        
11 A" 584 570        
12 A" 296 290        

Unscaled Zero Point Vibrational Energy (zpe) 9661.9 cm-1
Scaled (by 0.9769) Zero Point Vibrational Energy (zpe) 9438.7 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 MP4/aug-cc-pVDZ
ABC
9.84727 0.30043 0.29468

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.049 1.392 0.000
C2 0.000 0.159 0.000
N3 0.056 -1.218 0.000
H4 0.050 2.468 0.000
H5 -0.366 -1.625 0.834
H6 -0.366 -1.625 -0.834

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.23412.61011.07543.15793.1579
C21.23411.37812.30902.00342.0034
N32.61011.37813.68551.01981.0198
H41.07542.30903.68554.19754.1975
H53.15792.00341.01984.19751.6688
H63.15792.00341.01984.19751.6688

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 175.415 C2 C1 H4 177.766
C2 N3 H5 112.473 C2 N3 H6 112.473
H5 N3 H6 109.818
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability