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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: QCISD/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 QCISD/6-31G*
 hartrees
Energy at 0K-132.276158
Energy at 298.15K-132.278166
HF Energy-131.842751
Nuclear repulsion energy58.917126
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 QCISD/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' 3533 3364 9.66      
2 A' 3507 3339 63.36      
3 A' 2256 2148 54.66      
4 A' 1705 1623 31.97      
5 A' 1071 1020 6.69      
6 A' 762 726 260.65      
7 A' 492 469 63.38      
8 A' 353 336 21.86      
9 A" 3624 3451 17.72      
10 A" 1247 1188 0.02      
11 A" 605 576 36.46      
12 A" 306 292 1.43      

Unscaled Zero Point Vibrational Energy (zpe) 9730.7 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 9266.6 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 QCISD/6-31G*
ABC
9.86514 0.30590 0.30005

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.077 1.376 0.000
C2 0.000 0.164 0.000
N3 0.039 -1.209 0.000
H4 0.042 2.442 0.000
H5 -0.389 -1.609 0.831
H6 -0.389 -1.609 -0.831

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21382.58511.06733.13263.1326
C21.21381.37412.27851.99621.9962
N32.58511.37413.65161.01681.0168
H41.06732.27853.65164.15774.1577
H53.13261.99621.01684.15771.6623
H63.13261.99621.01684.15771.6623

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 174.732 C2 C1 H4 174.525
C2 N3 H5 112.361 C2 N3 H6 112.361
H5 N3 H6 109.654
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability