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All results from a given calculation for C5H10O (2-Butanone, 3-methyl-)

using model chemistry: B1B95/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-31G
 hartrees
Energy at 0K-271.564895
Energy at 298.15K-271.575618
Nuclear repulsion energy244.265878
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 B1B95/6-31G
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 3197 3049 9.14      
2 A 3161 3015 19.00      
3 A 3151 3005 34.91      
4 A 3149 3003 47.52      
5 A 3144 2999 3.27      
6 A 3141 2996 12.66      
7 A 3090 2946 4.20      
8 A 3068 2926 5.06      
9 A 3061 2920 19.21      
10 A 3059 2917 22.05      
11 A 1744 1663 127.71      
12 A 1557 1485 7.65      
13 A 1549 1478 26.62      
14 A 1541 1470 5.96      
15 A 1530 1460 2.07      
16 A 1516 1446 14.02      
17 A 1501 1431 16.42      
18 A 1462 1394 6.62      
19 A 1443 1376 8.26      
20 A 1429 1362 49.21      
21 A 1371 1307 2.37      
22 A 1356 1293 0.99      
23 A 1300 1240 50.03      
24 A 1214 1157 1.46      
25 A 1152 1099 0.64      
26 A 1121 1069 26.02      
27 A 1045 996 3.21      
28 A 999 953 0.88      
29 A 978 933 17.74      
30 A 966 921 2.79      
31 A 921 878 3.70      
32 A 740 706 5.11      
33 A 609 580 0.14      
34 A 533 508 6.33      
35 A 496 473 6.23      
36 A 335 319 2.18      
37 A 309 295 1.98      
38 A 271 259 0.41      
39 A 251 239 0.08      
40 A 210 200 0.34      
41 A 156 148 0.64      
42 A 57 54 3.59      

Unscaled Zero Point Vibrational Energy (zpe) 31439.5 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 29983.8 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 B1B95/6-31G
ABC
0.15125 0.09094 0.07922

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.617 -0.880 -0.730
C2 0.821 -0.123 -0.158
H3 1.208 1.926 0.347
H4 2.353 0.757 1.040
H5 0.712 0.944 1.722
C6 1.304 0.933 0.802
H7 -0.777 -0.851 -1.302
C8 -0.676 -0.255 -0.389
H9 -0.923 1.669 -1.398
H10 -0.826 -2.016 0.899
H11 -1.309 1.705 0.333
H12 -1.224 -0.492 1.717
H13 -2.370 -1.209 0.578
H14 -2.427 0.949 -0.808
C15 -1.307 -1.043 0.774
C16 -1.368 1.098 -0.577

Atom - Atom Distances (Å)
  O1 C2 H3 H4 H5 C6 H7 C8 H9 H10 H11 H12 H13 H14 C15 C16
O11.23903.03352.52113.18762.39512.46172.40113.66083.14934.04713.77014.20954.43973.29273.5851
C21.23902.14542.13422.16401.50692.09591.52032.79182.72332.84972.79873.45043.48192.49872.5420
H33.03352.14541.77611.76121.09583.79082.97452.76704.47062.52763.69294.76323.93743.91452.8598
H42.52112.13421.77611.78701.08964.22673.49824.18424.22153.84833.84885.13695.12804.08734.0715
H53.18762.16401.76121.78701.09423.81862.79583.59633.43572.56782.40993.92964.03112.98673.1042
C62.39511.50691.09581.08961.09423.45572.59823.21613.64022.76513.04314.25944.06363.27503.0119
H72.46172.09593.79084.22673.81863.45571.09532.52582.49193.08023.07322.49062.49172.15172.1620
C82.40111.52032.97453.49822.79582.59821.09532.18702.18712.18252.18842.17152.16651.53981.5321
H93.66082.79182.76704.18423.59633.21612.52582.18704.34401.77353.80263.77881.76833.49561.0941
H103.14932.72334.47064.22153.43573.64022.49192.18714.34403.79491.77531.77173.77781.09303.4894
H114.04712.84972.52763.84832.56782.76513.08022.18251.77353.79492.59733.11051.76632.78281.0951
H123.77012.79873.69293.84882.40993.04313.07322.18843.80261.77532.59731.76793.14561.09522.7947
H134.20953.45044.76325.13693.92964.25942.49062.17153.77881.77173.11051.76792.56531.09392.7680
H144.43973.48193.93745.12804.03114.06362.49172.16651.76833.77781.76633.14562.56532.77941.0937
C153.29272.49873.91454.08732.98673.27502.15171.53983.49561.09302.78281.09521.09392.77942.5327
C163.58512.54202.85984.07153.10423.01192.16201.53211.09413.48941.09512.79472.76801.09372.5327

picture of 2-Butanone, 3-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C6 121.125 O1 C2 C8 120.621
C2 C6 H3 110.030 C2 C6 H4 109.511
C2 C6 H5 111.614 C2 C8 H7 105.354
C2 C8 C15 109.480 C2 C8 C16 112.768
H3 C6 H4 108.726 H3 C6 H5 107.062
H4 C6 H5 109.831 C6 C2 C8 118.244
H7 C8 C15 108.303 H7 C8 C16 109.625
C8 C15 H10 111.216 C8 C15 H12 111.185
C8 C15 H13 109.923 C8 C16 H9 111.682
C8 C16 H11 111.260 C8 C16 H14 110.072
H9 C16 H11 108.218 H9 C16 H14 107.854
H10 C15 H12 108.448 H10 C15 H13 108.228
H11 C16 H14 107.601 H12 C15 H13 107.725
C15 C8 C16 111.070
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.415      
2 C 0.363      
3 H 0.188      
4 H 0.194      
5 H 0.174      
6 C -0.531      
7 H 0.186      
8 C -0.222      
9 H 0.164      
10 H 0.176      
11 H 0.153      
12 H 0.151      
13 H 0.166      
14 H 0.164      
15 C -0.453      
16 C -0.458      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.205 1.825 1.414 3.192
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.043 3.895 3.047
y 3.895 -38.523 -1.525
z 3.047 -1.525 -38.255
Traceless
 xyz
x -2.654 3.895 3.047
y 3.895 1.126 -1.525
z 3.047 -1.525 1.528
Polar
3z2-r23.056
x2-y2-2.520
xy3.895
xz3.047
yz-1.525


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.638 -0.211 -0.145
y -0.211 7.859 0.429
z -0.145 0.429 7.272


<r2> (average value of r2) Å2
<r2> 179.672
(<r2>)1/2 13.404