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 C5H8O (Methyl cyclopropyl ketone)

using model chemistry: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-270.502811
Energy at 298.15K-270.511449
HF Energy-270.502811
Nuclear repulsion energy231.207486
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 mPW1PW91/6-31G(2df,p)
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' 3276 3127 3.64      
2 A' 3203 3058 8.96      
3 A' 3190 3046 8.24      
4 A' 3171 3027 9.37      
5 A' 3060 2922 2.15      
6 A' 1826 1743 125.71      
7 A' 1493 1426 13.07      
8 A' 1464 1398 12.63      
9 A' 1422 1357 107.43      
10 A' 1374 1312 13.07      
11 A' 1238 1182 2.09      
12 A' 1200 1146 87.13      
13 A' 1115 1064 15.21      
14 A' 1067 1018 10.71      
15 A' 977 932 49.90      
16 A' 943 900 4.81      
17 A' 807 770 2.49      
18 A' 760 726 0.14      
19 A' 595 568 10.77      
20 A' 372 355 4.31      
21 A' 237 226 4.41      
22 A" 3262 3114 0.40      
23 A" 3169 3025 12.70      
24 A" 3133 2991 5.76      
25 A" 1477 1410 8.63      
26 A" 1451 1385 4.13      
27 A" 1214 1159 0.13      
28 A" 1133 1082 1.36      
29 A" 1097 1048 1.25      
30 A" 1053 1006 5.04      
31 A" 894 854 0.61      
32 A" 845 807 3.90      
33 A" 606 578 1.11      
34 A" 256 244 0.35      
35 A" 148 141 0.07      
36 A" 66 63 1.90      

Unscaled Zero Point Vibrational Energy (zpe) 26295.7 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 25104.5 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 mPW1PW91/6-31G(2df,p)
ABC
0.24213 0.08836 0.07724

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.473 -0.550 0.000
C2 -0.280 -0.754 0.000
C3 0.296 -2.148 0.000
C4 0.699 0.367 0.000
C5 0.296 1.625 0.741
C6 0.296 1.625 -0.741
H7 -0.504 -2.886 0.000
H8 0.934 -2.291 -0.879
H9 0.934 -2.291 0.879
H10 1.749 0.099 0.000
H11 -0.665 1.580 1.238
H12 1.077 2.160 1.267
H13 -0.665 1.580 -1.238
H14 1.077 2.160 -1.267

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.21012.38452.35832.90022.90022.52913.09753.09753.28742.59343.93122.59343.9312
C21.21011.50901.48872.55732.55732.14412.14652.14652.20182.67023.45512.67023.4551
C32.38451.50902.54723.84503.84501.08891.09461.09462.67624.04484.55784.04484.5578
C42.35831.48872.54721.51451.51453.46872.80892.80891.08352.20622.22762.20622.2276
C52.90022.55733.84501.51451.48274.64104.28493.96922.23321.08311.08282.20122.2202
C62.90022.55733.84501.51451.48274.64103.96924.28492.23322.20122.22021.08311.0828
H72.52912.14411.08893.46874.64104.64101.78721.78723.74064.63795.43774.63795.4377
H83.09752.14651.09462.80894.28493.96921.78721.75722.67384.69274.94274.20364.4697
H93.09752.14651.09462.80893.96924.28491.78721.75722.67384.20364.46974.69274.9427
H103.28742.20182.67621.08352.23322.23323.74062.67382.67383.09122.51033.09122.5103
H112.59342.67024.04482.20621.08312.20124.63794.69274.20363.09121.83642.47663.1059
H123.93123.45514.55782.22761.08282.22025.43774.94274.46972.51031.83643.10592.5336
H132.59342.67024.04482.20622.20121.08314.63794.20364.69273.09122.47663.10591.8364
H143.93123.45514.55782.22762.22021.08285.43774.46974.94272.51033.10592.53361.8364

picture of Methyl cyclopropyl ketone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 122.171 O1 C2 C4 121.468
C2 C3 H7 110.187 C2 C3 H8 110.047
C2 C3 H9 110.047 C2 C4 C5 116.749
C2 C4 C6 116.749 C2 C4 H10 116.862
C3 C2 C4 116.361 C4 C5 C6 60.693
C4 C5 H11 115.265 C4 C5 H12 117.133
C4 C6 C5 60.693 C4 C6 H13 115.265
C4 C6 H14 117.133 C5 C4 C6 58.615
C5 C4 H10 117.575 C5 C6 H13 117.310
C5 C6 H14 119.030 C6 C4 H10 117.575
C6 C5 H11 117.310 C6 C5 H12 119.030
H7 C3 H8 109.864 H7 C3 H9 109.864
H8 C3 H9 106.772 H11 C5 H12 115.961
H13 C6 H14 115.961
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.349      
2 C 0.404      
3 C -0.556      
4 C -0.166      
5 C -0.296      
6 C -0.296      
7 H 0.169      
8 H 0.166      
9 H 0.166      
10 H 0.123      
11 H 0.169      
12 H 0.148      
13 H 0.169      
14 H 0.148      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.703 -0.020 0.000 2.703
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.646 -0.870 0.000
y -0.870 -33.505 0.000
z 0.000 0.000 -35.231
Traceless
 xyz
x -4.278 -0.870 0.000
y -0.870 3.434 0.000
z 0.000 0.000 0.844
Polar
3z2-r21.688
x2-y2-5.141
xy-0.870
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.756 0.194 0.000
y 0.194 9.473 0.000
z 0.000 0.000 6.743


<r2> (average value of r2) Å2
<r2> 166.550
(<r2>)1/2 12.905