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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: MP2/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 MP2/TZVP
 hartrees
Energy at 0K-132.342625
Energy at 298.15K-132.344721
HF Energy-131.896857
Nuclear repulsion energy59.255198
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 MP2/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' 3584 3397 21.66      
2 A' 3530 3346 83.32      
3 A' 2215 2099 89.53      
4 A' 1654 1568 34.92      
5 A' 1071 1015 12.18      
6 A' 725 688 242.11      
7 A' 527 499 80.27      
8 A' 406 385 10.75      
9 A" 3686 3494 36.32      
10 A" 1213 1150 0.11      
11 A" 628 595 44.66      
12 A" 299 284 4.80      

Unscaled Zero Point Vibrational Energy (zpe) 9768.5 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 9259.6 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 MP2/TZVP
ABC
10.09019 0.30950 0.30325

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.129 1.366 0.000
C2 0.000 0.160 0.000
N3 -0.012 -1.200 0.000
H4 0.160 2.426 0.000
H5 -0.426 -1.594 0.832
H6 -0.426 -1.594 -0.832

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21242.56941.06023.12413.1241
C21.21241.36012.27091.98771.9877
N32.56941.36013.62941.00971.0097
H41.06022.27093.62944.14624.1462
H53.12411.98771.00974.14621.6646
H63.12411.98771.00974.14621.6646

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 174.384 C2 C1 H4 175.573
C2 N3 H5 113.188 C2 N3 H6 113.188
H5 N3 H6 111.029
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability