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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: MP2=FULL/3-21G*

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=FULL/3-21G*
 hartrees
Energy at 0K-131.409461
Energy at 298.15K-131.411315
HF Energy-131.120960
Nuclear repulsion energy59.016850
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=FULL/3-21G*
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' 3586 3400 43.69      
2 A' 3515 3332 67.98      
3 A' 2236 2120 80.45      
4 A' 1743 1653 47.14      
5 A' 1085 1028 19.05      
6 A' 516 489 28.70      
7 A' 430 408 60.31      
8 A' 211 200 439.65      
9 A" 3697 3505 42.00      
10 A" 1215 1151 6.47      
11 A" 738 700 40.98      
12 A" 437 414 11.30      

Unscaled Zero Point Vibrational Energy (zpe) 9704.5 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 9199.9 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=FULL/3-21G*
ABC
10.99481 0.30653 0.29856

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.034 1.384 0.000
C2 0.000 0.162 0.000
N3 0.057 -1.189 0.000
H4 -0.067 2.445 0.000
H5 -0.064 -1.701 0.863
H6 -0.064 -1.701 -0.863

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.22192.57431.06193.20323.2032
C21.22191.35252.28382.05432.0543
N32.57431.35253.63631.01061.0106
H41.06192.28383.63634.23494.2349
H53.20322.05431.01064.23491.7260
H63.20322.05431.01064.23491.7260

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 179.180 C2 C1 H4 179.801
C2 N3 H5 120.069 C2 N3 H6 120.069
H5 N3 H6 117.280
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability