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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: CCD/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 CCD/6-31G**
 hartrees
Energy at 0K-132.297456
Energy at 298.15K-132.299506
HF Energy-131.853721
Nuclear repulsion energy59.097886
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 CCD/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' 3624 3398 11.56      
2 A' 3551 3330 66.20      
3 A' 2292 2149 57.15      
4 A' 1697 1592 28.66      
5 A' 1077 1010 8.23      
6 A' 752 706 243.64      
7 A' 504 473 69.16      
8 A' 346 324 15.71      
9 A" 3722 3490 19.11      
10 A" 1246 1168 0.05      
11 A" 625 586 36.75      
12 A" 327 306 1.34      

Unscaled Zero Point Vibrational Energy (zpe) 9881.2 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 9264.6 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 CCD/6-31G**
ABC
10.00672 0.30731 0.30144

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.016 1.374 0.000
C2 0.000 0.164 0.000
N3 0.084 -1.205 0.000
H4 -0.028 2.435 0.000
H5 -0.328 -1.614 0.827
H6 -0.328 -1.614 -0.827

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21002.58061.06143.11993.1199
C21.21001.37232.27061.98871.9887
N32.58061.37233.64191.01001.0100
H41.06142.27063.64194.14364.1436
H53.11991.98871.01004.14361.6531
H63.11991.98871.01004.14361.6531

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 175.739 C2 C1 H4 176.903
C2 N3 H5 112.289 C2 N3 H6 112.289
H5 N3 H6 109.834
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability