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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: QCISD/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-132.376190
Energy at 298.15K-132.378379
HF Energy-131.865417
Nuclear repulsion energy59.310209
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(2df,p)
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' 3592 3403 15.89      
2 A' 3547 3361 81.43      
3 A' 2272 2152 60.76      
4 A' 1674 1585 25.56      
5 A' 1072 1015 8.25      
6 A' 741 702 207.23      
7 A' 521 493 81.17      
8 A' 410 388 9.11      
9 A" 3682 3488 28.08      
10 A" 1234 1169 0.20      
11 A" 683 647 34.83      
12 A" 355 336 3.55      

Unscaled Zero Point Vibrational Energy (zpe) 9890.7 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 9370.4 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(2df,p)
ABC
10.01246 0.30992 0.30396

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.058 1.367 0.000
C2 0.000 0.163 0.000
N3 0.140 -1.195 0.000
H4 -0.121 2.425 0.000
H5 -0.255 -1.622 0.826
H6 -0.255 -1.622 -0.826

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20542.56931.06033.10703.1070
C21.20541.36492.26561.98311.9831
N32.56931.36493.62941.01041.0104
H41.06032.26563.62944.13274.1327
H53.10701.98311.01044.13271.6519
H63.10701.98311.01044.13271.6519

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.874 C2 C1 H4 179.351
C2 N3 H5 112.354 C2 N3 H6 112.354
H5 N3 H6 109.671
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability