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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: MP2=FULL/STO-3G

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/STO-3G
 hartrees
Energy at 0K-130.369087
Energy at 298.15K-130.371265
HF Energy-130.167844
Nuclear repulsion energy57.487082
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/STO-3G
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' 3747 3330 111.01      
2 A' 3612 3211 2.96      
3 A' 2339 2079 0.60      
4 A' 1867 1660 8.21      
5 A' 1126 1001 49.09      
6 A' 940 836 50.23      
7 A' 683 607 18.45      
8 A' 383 341 10.76      
9 A" 3795 3374 1.02      
10 A" 1398 1243 1.34      
11 A" 739 657 13.25      
12 A" 365 324 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 10497.1 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 9330.8 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/STO-3G
ABC
8.61530 0.29129 0.28722

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.032 1.400 0.000
C2 0.000 0.182 0.000
N3 0.152 -1.252 0.000
H4 -0.070 2.478 0.000
H5 -0.401 -1.604 0.830
H6 -0.401 -1.604 -0.830

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21882.65831.07843.13873.1387
C21.21881.44162.29712.00982.0098
N32.65831.44163.73621.05751.0575
H41.07842.29713.73624.17874.1787
H53.13872.00981.05754.17871.6601
H63.13872.00981.05754.17871.6601

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 175.458 C2 C1 H4 179.493
C2 N3 H5 106.046 C2 N3 H6 106.046
H5 N3 H6 103.418
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability