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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: QCISD/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-132.434239
Energy at 298.15K-132.436443
HF Energy-131.901807
Nuclear repulsion energy59.348032
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/cc-pVTZ
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' 3576 3417 17.22      
2 A' 3503 3347 80.28      
3 A' 2245 2145 84.90      
4 A' 1667 1592 25.12      
5 A' 1069 1022 10.89      
6 A' 716 685 196.71      
7 A' 519 496 92.51      
8 A' 421 402 8.13      
9 A" 3665 3501 30.47      
10 A" 1234 1179 0.59      
11 A" 683 652 38.34      
12 A" 361 344 5.81      

Unscaled Zero Point Vibrational Energy (zpe) 9828.6 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 9391.2 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/cc-pVTZ
ABC
10.08718 0.31020 0.30412

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.041 1.367 0.000
C2 0.000 0.163 0.000
N3 0.123 -1.195 0.000
H4 -0.086 2.426 0.000
H5 -0.266 -1.620 0.827
H6 -0.266 -1.620 -0.827

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20522.56801.05993.10803.1080
C21.20521.36382.26501.98341.9834
N32.56801.36383.62761.00791.0079
H41.05992.26503.62764.13404.1340
H53.10801.98341.00794.13401.6540
H63.10801.98341.00794.13401.6540

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.758 C2 C1 H4 179.514
C2 N3 H5 112.631 C2 N3 H6 112.631
H5 N3 H6 110.265
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability