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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: CCSD(T)/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD(T)/TZVP
 hartrees
Energy at 0K-132.380672
Energy at 298.15K-132.382741
HF Energy-131.896521
Nuclear repulsion energy59.113980
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 CCSD(T)/TZVP
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' 3551 3418        
2 A' 3495 3364        
3 A' 2210 2127        
4 A' 1653 1591        
5 A' 1054 1015        
6 A' 746 718        
7 A' 516 497        
8 A' 408 392        
9 A" 3644 3507        
10 A" 1219 1173        
11 A" 621 597        
12 A" 280 270        

Unscaled Zero Point Vibrational Energy (zpe) 9697.9 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 9334.3 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 CCSD(T)/TZVP
ABC
9.96678 0.30796 0.30189

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.147 1.366 0.000
C2 0.000 0.163 0.000
N3 -0.022 -1.205 0.000
H4 0.179 2.428 0.000
H5 -0.453 -1.586 0.832
H6 -0.453 -1.586 -0.832

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21182.57641.06263.12573.1257
C21.21181.36822.27201.98971.9897
N32.57641.36823.63851.01171.0117
H41.06262.27203.63854.14844.1484
H53.12571.98971.01174.14841.6643
H63.12571.98971.01174.14841.6643

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 173.956 C2 C1 H4 174.748
C2 N3 H5 112.589 C2 N3 H6 112.589
H5 N3 H6 110.668
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability