return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2CHCHO (Acrolein)

using model chemistry: CCSD(T)/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS trans 1A'
Energy calculated at CCSD(T)/daug-cc-pVTZ
 hartrees
Energy at 0K-191.612655
Energy at 298.15K 
HF Energy-190.835159
Nuclear repulsion energy102.814421
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 CCSD(T)/daug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/daug-cc-pVTZ
ABC
1.58436 0.15477 0.14099

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/daug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.153 -0.743 0.000
C2 0.000 0.726 0.000
C3 1.225 1.276 0.000
O4 -1.225 -1.319 0.000
H5 0.799 -1.310 0.000
H6 -0.908 1.319 0.000
H7 1.374 2.348 0.000
H8 2.110 0.646 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8
C11.47722.44421.21671.10852.19613.44812.6554
C21.47721.34222.38412.18711.08472.12582.1111
C32.44421.34223.56842.62012.13311.08291.0861
O41.21672.38413.56842.02462.65734.49503.8708
H51.10852.18712.62012.02463.13483.70272.3541
H62.19611.08472.13312.65733.13482.50343.0919
H73.44812.12581.08294.49503.70272.50341.8541
H82.65542.11111.08613.87082.35413.09191.8541

picture of Acrolein state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 120.131 C1 C2 H6 117.190
C2 C1 O4 124.213 C2 C1 H5 114.777
C2 C3 H7 122.108 C2 C3 H8 120.408
C3 C2 H6 122.679 O4 C1 H5 121.010
H7 C3 H8 117.484
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability