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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: QCISD(T)/aug-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 QCISD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-132.349914
Energy at 298.15K-132.351723
HF Energy-131.866682
Nuclear repulsion energy58.455601
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(T)/aug-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' 3506 3428        
2 A' 3454 3378        
3 A' 2172 2124        
4 A' 1628 1592        
5 A' 1039 1016        
6 A' 699 684        
7 A' 459 449        
8 A' 260 254        
9 A" 3601 3521        
10 A" 1205 1178        
11 A" 573 560        
12 A" 280 273        

Unscaled Zero Point Vibrational Energy (zpe) 9437.5 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 9228.0 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(T)/aug-cc-pVDZ
ABC
9.84196 0.30074 0.29499

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.040 1.391 0.000
C2 0.000 0.160 0.000
N3 0.063 -1.218 0.000
H4 0.036 2.467 0.000
H5 -0.358 -1.626 0.834
H6 -0.358 -1.626 -0.834

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.23122.60871.07583.15513.1551
C21.23121.37952.30662.00362.0036
N32.60871.37953.68441.01961.0196
H41.07582.30663.68444.19524.1952
H53.15512.00361.01964.19521.6685
H63.15512.00361.01964.19521.6685

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 175.523 C2 C1 H4 177.915
C2 N3 H5 112.401 C2 N3 H6 112.401
H5 N3 H6 109.809
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability