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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: QCISD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/cc-pVDZ
 hartrees
Energy at 0K-132.306688
Energy at 298.15K-132.308825
HF Energy-131.859317
Nuclear repulsion energy58.611779
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 QCISD/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3537 3393 9.27      
2 A' 3492 3350 73.07      
3 A' 2229 2139 63.00      
4 A' 1649 1582 20.27      
5 A' 1057 1014 6.93      
6 A' 794 762 196.15      
7 A' 510 490 72.83      
8 A' 372 357 8.41      
9 A" 3626 3478 18.66      
10 A" 1238 1188 0.81      
11 A" 660 633 31.94      
12 A" 337 324 3.58      

Unscaled Zero Point Vibrational Energy (zpe) 9750.9 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 9355.0 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 QCISD/cc-pVDZ
ABC
9.63855 0.30264 0.29727

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.072 1.383 0.000
C2 0.000 0.161 0.000
N3 0.160 -1.210 0.000
H4 -0.143 2.456 0.000
H5 -0.273 -1.624 0.827
H6 -0.273 -1.624 -0.827

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.22402.60271.07553.12483.1248
C21.22401.37972.29951.98581.9858
N32.60271.37973.67801.02101.0210
H41.07552.29953.67804.16484.1648
H53.12481.98581.02104.16481.6534
H63.12481.98581.02104.16481.6534

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.706 C2 C1 H4 179.559
C2 N3 H5 110.732 C2 N3 H6 110.732
H5 N3 H6 108.124
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability