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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: CCD/6-311G**

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/6-311G**
 hartrees
Energy at 0K-132.346804
Energy at 298.15K-132.349033
HF Energy-131.885635
Nuclear repulsion energy59.197691
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/6-311G**
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' 3586 3425 12.82      
2 A' 3514 3356 74.54      
3 A' 2266 2164 73.47      
4 A' 1664 1589 29.15      
5 A' 1069 1021 9.64      
6 A' 761 727 219.95      
7 A' 548 523 84.23      
8 A' 409 391 8.30      
9 A" 3675 3510 22.14      
10 A" 1238 1183 0.37      
11 A" 695 663 37.03      
12 A" 356 340 4.47      

Unscaled Zero Point Vibrational Energy (zpe) 9890.1 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 9446.0 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 CCD/6-311G**
ABC
9.94971 0.30874 0.30278

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.051 1.369 0.000
C2 0.000 0.164 0.000
N3 0.134 -1.199 0.000
H4 -0.108 2.432 0.000
H5 -0.264 -1.620 0.829
H6 -0.264 -1.620 -0.829

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20692.57471.06373.10933.1093
C21.20691.36892.27051.98421.9842
N32.57471.36893.63831.01141.0114
H41.06372.27053.63834.13824.1382
H53.10931.98421.01144.13821.6577
H63.10931.98421.01144.13821.6577

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.776 C2 C1 H4 179.302
C2 N3 H5 112.069 C2 N3 H6 112.069
H5 N3 H6 110.071
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability