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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: CISD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CISD/cc-pVDZ
 hartrees
Energy at 0K-132.256338
Energy at 298.15K-132.258640
HF Energy-131.861278
Nuclear repulsion energy59.043673
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 CISD/cc-pVDZ
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' 3629 3345 15.79      
2 A' 3565 3286 84.77      
3 A' 2312 2132 76.17      
4 A' 1683 1551 23.05      
5 A' 1090 1005 10.23      
6 A' 787 726 205.18      
7 A' 560 517 79.24      
8 A' 432 398 12.31      
9 A" 3719 3428 27.85      
10 A" 1262 1163 0.56      
11 A" 722 666 33.42      
12 A" 374 345 4.78      

Unscaled Zero Point Vibrational Energy (zpe) 10067.2 cm-1
Scaled (by 0.9218) Zero Point Vibrational Energy (zpe) 9279.9 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 CISD/cc-pVDZ
ABC
9.82579 0.30720 0.30154

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.092 1.371 0.000
C2 0.000 0.162 0.000
N3 0.172 -1.198 0.000
H4 -0.179 2.437 0.000
H5 -0.237 -1.623 0.825
H6 -0.237 -1.623 -0.825

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21232.58201.06983.10823.1082
C21.21231.37052.28211.98021.9802
N32.58201.37053.65161.01421.0142
H41.06982.28213.65164.14284.1428
H53.10821.98021.01424.14281.6506
H63.10821.98021.01424.14281.6506

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 177.133 C2 C1 H4 179.673
C2 N3 H5 111.394 C2 N3 H6 111.394
H5 N3 H6 108.928
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability