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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: MP2/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-22.736561
Energy at 298.15K-22.738703
HF Energy-22.321876
Nuclear repulsion energy31.506624
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/CEP-121G*
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' 3535 3368 12.40      
2 A' 3490 3326 70.09      
3 A' 2167 2065 71.50      
4 A' 1701 1621 39.78      
5 A' 1043 994 6.14      
6 A' 804 766 237.31      
7 A' 522 497 107.57      
8 A' 382 364 5.93      
9 A" 3637 3466 23.26      
10 A" 1247 1188 0.28      
11 A" 662 631 51.21      
12 A" 332 316 6.99      

Unscaled Zero Point Vibrational Energy (zpe) 9761.2 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 9300.5 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/CEP-121G*
ABC
9.73713 0.30223 0.29660

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.062 1.386 0.000
C2 0.000 0.162 0.000
N3 0.048 -1.219 0.000
H4 0.083 2.453 0.000
H5 -0.395 -1.604 0.832
H6 -0.395 -1.604 -0.832

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.22522.60451.06783.13623.1362
C21.22521.38162.29281.99131.9913
N32.60451.38163.67221.01801.0180
H41.06782.29283.67224.16874.1687
H53.13621.99131.01804.16871.6642
H63.13621.99131.01804.16871.6642

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 175.123 C2 C1 H4 178.254
C2 N3 H5 111.265 C2 N3 H6 111.265
H5 N3 H6 109.657
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability