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All results from a given calculation for C2H5CN (ethyl cyanide)

using model chemistry: MP2/aug-cc-pVQZ

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/aug-cc-pVQZ
 hartrees
Energy at 0K-171.770328
Energy at 298.15K 
HF Energy-171.030920
Nuclear repulsion energy103.038792
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/aug-cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at MP2/aug-cc-pVQZ
ABC
0.92384 0.15815 0.14211

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.504 0.554 0.000
C2 0.000 0.821 0.000
C3 -0.766 -0.420 0.000
N4 -1.354 -1.429 0.000
H5 2.046 1.496 0.000
H6 1.792 -0.012 0.880
H7 1.792 -0.012 -0.880
H8 -0.289 1.399 0.876
H9 -0.289 1.399 -0.876

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.52712.47003.47851.08651.08631.08632.16692.1669
C21.52711.45882.62632.15462.16402.16401.08861.0886
C32.47001.45881.16783.40292.73622.73622.07452.0745
N43.47852.62631.16784.48513.56113.56113.14613.1461
H51.08652.15463.40294.48511.76471.76472.49652.4965
H61.08632.16402.73623.56111.76471.76082.51503.0678
H71.08632.16402.73623.56111.76471.76083.06782.5150
H82.16691.08862.07453.14612.49652.51503.06781.7526
H92.16691.08862.07453.14612.49653.06782.51501.7526

picture of ethyl cyanide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 111.609 C1 C2 H8 110.757
C1 C2 H9 110.757 C2 C1 H5 109.904
C2 C1 H6 110.670 C2 C1 H7 110.670
C2 C3 N4 178.556 C3 C2 H8 108.170
C3 C2 H9 108.170 H5 C1 H6 108.623
H5 C1 H7 108.623 H6 C1 H7 108.289
H8 C2 H9 107.218
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability