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 C5H10O (2-methylbutyraldehyde)

using model chemistry: MP2/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/cc-pVTZ
 hartrees
Energy at 0K-271.210781
Energy at 298.15K 
HF Energy-270.116491
Nuclear repulsion energy240.995465
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/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at MP2/cc-pVTZ
ABC
0.23523 0.07099 0.05937

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.367 -0.686 0.233
C2 -0.082 0.078 0.418
C3 1.035 -0.693 -0.299
C4 2.426 -0.145 -0.005
C5 -0.217 1.518 -0.043
O6 -2.374 -0.244 -0.280
H7 -1.334 -1.734 0.590
H8 0.137 0.042 1.493
H9 0.992 -1.743 -0.001
H10 0.842 -0.664 -1.374
H11 3.192 -0.752 -0.486
H12 2.538 0.875 -0.367
H13 2.621 -0.145 1.067
H14 -0.381 1.555 -1.120
H15 -1.070 1.997 0.432
H16 0.677 2.091 0.191

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
C11.50652.46013.83832.50141.21361.10762.09192.59482.73164.61524.24744.10972.79722.70733.4485
C21.50651.53472.55281.51822.41772.20971.09722.15492.14833.49572.84812.78852.15292.15892.1634
C32.46011.53471.52312.55353.43842.73702.13471.09261.09282.16542.17242.16332.78033.49312.8495
C43.83832.55281.52313.12294.80854.12562.74232.14712.15661.08861.08791.09003.46544.12342.8462
C52.50141.51822.55353.12292.79543.49672.15943.47802.76644.11912.84723.47181.08941.08771.0874
O61.21362.41773.43844.80852.79542.01423.08653.69453.42255.59235.03815.17422.81322.68953.8709
H71.10762.20972.73704.12563.49672.01422.47632.40023.12134.75514.76624.28923.82773.74424.3403
H82.09191.09722.13472.74232.15943.08652.47632.47963.03553.72533.14912.52763.06282.53072.4871
H92.59482.15491.09262.14713.47803.69452.40022.47961.75272.46143.06222.51973.74304.29283.8521
H102.73162.14831.09282.15662.76643.42253.12133.03551.75272.51362.50153.06472.54613.74153.1732
H114.61523.49572.16541.08864.11915.59234.75513.72532.46142.51361.75711.76194.29945.15373.8557
H124.24742.84812.17241.08792.84725.03814.76623.14913.06222.50151.75711.76163.08983.86162.2923
H134.10972.78852.16331.09003.47185.17424.28922.52762.51973.06471.76191.76164.08444.31473.0903
H142.79722.15292.78033.46541.08942.81323.82773.06283.74302.54614.29943.08984.08441.75451.7677
H152.70732.15893.49314.12341.08772.68953.74422.53074.29283.74155.15373.86164.31471.75451.7655
H163.44852.16342.84952.84621.08743.87094.34032.48713.85213.17323.85572.29233.09031.76771.7655

picture of 2-methylbutyraldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 107.982 C1 C2 C5 111.583
C1 C2 H8 105.851 C2 C1 O6 125.105
C2 C1 H7 114.556 C2 C3 C4 113.204
C2 C3 H9 109.052 C2 C3 H10 108.523
C2 C5 H14 110.222 C2 C5 H15 110.805
C2 C5 H16 111.180 C3 C2 C5 113.532
C3 C2 H8 107.235 C3 C4 H11 110.927
C3 C4 H12 111.523 C3 C4 H13 110.669
C4 C3 H9 109.239 C4 C3 H10 109.968
C5 C2 H8 110.276 O6 C1 H7 120.326
H9 C3 H10 106.641 H11 C4 H12 107.668
H11 C4 H13 107.943 H12 C4 H13 107.964
H14 C5 H15 107.393 H14 C5 H16 108.603
H15 C5 H16 108.526
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability