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: B3PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-270.367133
Energy at 298.15K-270.375831
HF Energy-270.367133
Nuclear repulsion energy229.240176
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 B3PW91/6-31G
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' 3284 3145 6.41      
2 A' 3214 3078 8.54      
3 A' 3189 3055 10.08      
4 A' 3179 3045 8.54      
5 A' 3053 2924 3.23      
6 A' 1720 1648 92.79      
7 A' 1518 1454 5.59      
8 A' 1505 1441 19.28      
9 A' 1442 1381 132.17      
10 A' 1429 1368 15.68      
11 A' 1251 1198 44.56      
12 A' 1227 1175 52.33      
13 A' 1134 1086 17.74      
14 A' 1102 1055 14.96      
15 A' 1008 965 37.28      
16 A' 940 900 30.61      
17 A' 836 800 1.88      
18 A' 769 737 0.20      
19 A' 599 574 8.28      
20 A' 384 367 4.76      
21 A' 240 230 5.37      
22 A" 3268 3130 0.60      
23 A" 3176 3041 11.74      
24 A" 3126 2994 8.67      
25 A" 1518 1454 14.94      
26 A" 1496 1433 7.80      
27 A" 1238 1186 0.14      
28 A" 1157 1108 0.02      
29 A" 1143 1095 8.39      
30 A" 1086 1040 7.83      
31 A" 907 869 1.07      
32 A" 841 806 5.04      
33 A" 620 594 1.19      
34 A" 257 246 0.18      
35 A" 140 134 0.20      
36 A" 70 67 2.82      

Unscaled Zero Point Vibrational Energy (zpe) 26532.1 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 25409.8 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 B3PW91/6-31G
ABC
0.23734 0.08700 0.07593

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.498 -0.561 0.000
C2 -0.269 -0.762 0.000
C3 0.302 -2.158 0.000
C4 0.699 0.364 0.000
C5 0.302 1.640 0.747
C6 0.302 1.640 -0.747
H7 -0.507 -2.890 0.000
H8 0.936 -2.313 -0.882
H9 0.936 -2.313 0.882
H10 1.749 0.092 0.000
H11 -0.660 1.610 1.248
H12 1.086 2.169 1.277
H13 -0.660 1.610 -1.248
H14 1.086 2.169 -1.277

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.24572.40632.38332.93982.93982.53183.12603.12603.31172.64023.97042.64023.9704
C21.24571.50801.48442.57952.57952.14182.15292.15292.19062.70823.47262.70823.4726
C32.40631.50802.55313.87083.87081.09121.09741.09742.67504.08364.57934.08364.5793
C42.38331.48442.55311.53071.53073.47072.82902.82901.08492.22552.24492.22552.2449
C52.93982.57953.87081.53071.49384.66254.32264.00612.24651.08481.08472.21462.2344
C62.93982.57953.87081.53071.49384.66254.00614.32262.24652.21462.23441.08481.0847
H72.53182.14181.09123.47074.66254.66251.78661.78663.73934.67255.45614.67255.4561
H83.12602.15291.09742.82904.32264.00611.78661.76472.68804.74044.97784.25064.5022
H93.12602.15291.09742.82904.00614.32261.78661.76472.68804.25064.50224.74044.9778
H103.31172.19062.67501.08492.24652.24653.73932.68802.68803.10812.52663.10812.5266
H112.64022.70824.08362.22551.08482.21464.67254.74044.25063.10811.83392.49533.1206
H123.97043.47264.57932.24491.08472.23445.45614.97784.50222.52661.83393.12062.5546
H132.64022.70824.08362.22552.21461.08484.67254.25064.74043.10812.49533.12061.8339
H143.97043.47264.57932.24492.23441.08475.45614.50224.97782.52663.12062.55461.8339

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 121.521 O1 C2 C4 121.363
C2 C3 H7 109.948 C2 C3 H8 110.457
C2 C3 H9 110.457 C2 C4 C5 117.625
C2 C4 C6 117.625 C2 C4 H10 116.128
C3 C2 C4 117.115 C4 C5 C6 60.794
C4 C5 H11 115.561 C4 C5 H12 117.247
C4 C6 C5 60.794 C4 C6 H13 115.561
C4 C6 H14 117.247 C5 C4 C6 58.412
C5 C4 H10 117.372 C5 C6 H13 117.491
C5 C6 H14 119.276 C6 C4 H10 117.372
C6 C5 H11 117.491 C6 C5 H12 119.276
H7 C3 H8 109.443 H7 C3 H9 109.443
H8 C3 H9 107.040 H11 C5 H12 115.415
H13 C6 H14 115.415
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.450      
2 C 0.401      
3 C -0.556      
4 C -0.286      
5 C -0.313      
6 C -0.313      
7 H 0.199      
8 H 0.188      
9 H 0.188      
10 H 0.172      
11 H 0.207      
12 H 0.178      
13 H 0.207      
14 H 0.178      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.120 0.066 0.000 3.120
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.869 -1.199 0.000
y -1.199 -33.345 0.000
z 0.000 0.000 -35.547
Traceless
 xyz
x -5.423 -1.199 0.000
y -1.199 4.362 0.000
z 0.000 0.000 1.060
Polar
3z2-r22.121
x2-y2-6.523
xy-1.199
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.672 0.192 0.000
y 0.192 8.873 0.000
z 0.000 0.000 6.309


<r2> (average value of r2) Å2
<r2> 169.195
(<r2>)1/2 13.007