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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: MP3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3/6-31+G**
 hartrees
Energy at 0K-132.305465
Energy at 298.15K-132.307490
HF Energy-131.861533
Nuclear repulsion energy59.164236
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 MP3/6-31+G**
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' 3657 3402 22.21      
2 A' 3564 3316 80.48      
3 A' 2297 2137 103.23      
4 A' 1702 1584 36.15      
5 A' 1088 1012 14.60      
6 A' 709 660 242.20      
7 A' 498 463 101.37      
8 A' 348 324 17.41      
9 A" 3757 3496 38.04      
10 A" 1239 1153 0.11      
11 A" 632 588 55.58      
12 A" 315 293 3.45      

Unscaled Zero Point Vibrational Energy (zpe) 9902.2 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 9214.0 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 MP3/6-31+G**
ABC
10.16429 0.30805 0.30179

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.070 1.372 0.000
C2 0.000 0.164 0.000
N3 0.034 -1.203 0.000
H4 0.062 2.433 0.000
H5 -0.359 -1.614 0.832
H6 -0.359 -1.614 -0.832

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20982.57571.06093.12993.1299
C21.20981.36802.26951.99641.9964
N32.57571.36803.63631.00801.0080
H41.06092.26953.63634.15354.1535
H53.12991.99641.00804.15351.6648
H63.12991.99641.00804.15351.6648

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 175.276 C2 C1 H4 176.260
C2 N3 H5 113.462 C2 N3 H6 113.462
H5 N3 H6 111.334
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability