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 (Pentanal)

using model chemistry: B3PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B3PW91/6-31+G**
 hartrees
Energy at 0K-271.693211
Energy at 298.15K-271.703939
Nuclear repulsion energy230.501598
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 B3PW91/6-31+G**
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' 3125 3001 36.04      
2 A' 3059 2936 30.76      
3 A' 3044 2922 27.41      
4 A' 3029 2908 33.52      
5 A' 3016 2896 22.83      
6 A' 2902 2786 149.60      
7 A' 1826 1753 179.28      
8 A' 1507 1447 10.11      
9 A' 1494 1434 0.98      
10 A' 1487 1428 0.93      
11 A' 1447 1389 17.09      
12 A' 1417 1361 13.21      
13 A' 1414 1357 2.01      
14 A' 1408 1352 8.08      
15 A' 1367 1313 14.11      
16 A' 1278 1227 4.91      
17 A' 1138 1093 11.26      
18 A' 1082 1039 0.38      
19 A' 1048 1006 1.64      
20 A' 923 887 0.98      
21 A' 898 863 14.27      
22 A' 691 664 12.11      
23 A' 395 379 2.07      
24 A' 288 277 4.14      
25 A' 135 130 5.60      
26 A" 3121 2997 58.20      
27 A" 3105 2981 19.11      
28 A" 3063 2941 8.84      
29 A" 3047 2925 8.09      
30 A" 1498 1438 9.57      
31 A" 1328 1275 0.25      
32 A" 1307 1255 0.10      
33 A" 1233 1183 0.06      
34 A" 1154 1108 0.29      
35 A" 978 939 0.78      
36 A" 856 822 0.21      
37 A" 744 714 2.01      
38 A" 664 638 3.85      
39 A" 236 227 0.00      
40 A" 177 170 1.36      
41 A" 111 106 1.08      
42 A" 70 67 2.55      

Unscaled Zero Point Vibrational Energy (zpe) 31053.5 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 29814.5 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 B3PW91/6-31+G**
ABC
0.34914 0.04840 0.04388

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.845 -2.056 0.000
C2 -0.340 -1.128 0.000
C3 0.000 0.357 0.000
C4 -1.240 1.252 0.000
C5 -0.900 2.741 0.000
O6 2.005 -1.705 0.000
H7 0.590 -3.140 0.000
H8 -0.958 -1.401 0.871
H9 -0.958 -1.401 -0.871
H10 0.623 0.583 -0.874
H11 0.623 0.583 0.874
H12 -1.859 1.018 0.878
H13 -1.859 1.018 -0.878
H14 -1.804 3.358 0.000
H15 -0.311 3.013 -0.884
H16 -0.311 3.013 0.884

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
C11.50502.55663.91005.10421.21181.11382.10622.10622.78872.78874.18684.18686.02745.27335.2733
C21.50501.52362.54433.90922.41502.21691.10191.10192.14922.14922.77182.77184.71914.23404.2340
C32.55661.52361.52932.54802.87633.54682.18302.18301.09701.09702.15932.15933.50172.81602.8160
C43.91002.54431.52931.52754.39034.75822.80622.80622.16412.16411.09901.09902.18062.17812.1781
C55.10423.90922.54801.52755.31106.06704.23274.23272.78222.78222.15822.15821.09501.09601.0960
O61.21182.41502.87634.39035.31102.01493.10273.10272.81252.81254.80784.80786.33635.32975.3297
H71.11382.21693.54684.75826.06702.01492.48602.48603.82453.82454.90524.90526.92566.28116.2811
H82.10621.10192.18302.80624.23273.10272.48601.74183.07872.53632.58143.11804.91154.79324.4604
H92.10621.10192.18302.80624.23273.10272.48601.74182.53633.07873.11802.58144.91154.46044.7932
H102.78872.14921.09702.16412.78222.81253.82453.07872.53631.74853.06892.51963.78922.60323.1413
H112.78872.14921.09702.16412.78222.81253.82452.53633.07871.74852.51963.06893.78923.14132.6032
H124.18682.77182.15931.09902.15824.80784.90522.58143.11803.06892.51961.75582.49983.07822.5242
H134.18682.77182.15931.09902.15824.80784.90523.11802.58142.51963.06891.75582.49982.52423.0782
H146.02744.71913.50172.18061.09506.33636.92564.91154.91153.78923.78922.49982.49981.76891.7689
H155.27334.23402.81602.17811.09605.32976.28114.79324.46042.60323.14133.07822.52421.76891.7676
H165.27334.23402.81602.17811.09605.32976.28114.46044.79323.14132.60322.52423.07821.76891.7676

picture of Pentanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 115.163 C1 C2 H8 106.771
C1 C2 H9 106.771 C2 C1 O6 125.124
C2 C1 H7 114.857 C2 C3 C4 112.905
C2 C3 H10 109.111 C2 C3 H11 109.111
C3 C2 H8 111.494 C3 C2 H9 111.494
C3 C4 C5 112.932 C3 C4 H12 109.394
C3 C4 H13 109.394 C4 C3 H10 109.886
C4 C3 H11 109.886 C4 C5 H14 111.436
C4 C5 H15 111.180 C4 C5 H16 111.180
C5 C4 H12 109.429 C5 C4 H13 109.429
O6 C1 H7 120.019 H8 C2 H9 104.446
H10 C3 H11 105.683 H12 C4 H13 106.031
H14 C5 H15 107.680 H14 C5 H16 107.680
H15 C5 H16 107.497
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.004      
2 C -0.087      
3 C -0.396      
4 C -0.147      
5 C -0.650      
6 O -0.351      
7 H 0.120      
8 H 0.181      
9 H 0.181      
10 H 0.175      
11 H 0.175      
12 H 0.154      
13 H 0.154      
14 H 0.163      
15 H 0.163      
16 H 0.163      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.860 -0.071 0.000 2.861
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -45.896 4.341 0.000
y 4.341 -36.984 0.000
z 0.000 0.000 -37.380
Traceless
 xyz
x -8.714 4.341 0.000
y 4.341 4.654 0.000
z 0.000 0.000 4.060
Polar
3z2-r28.119
x2-y2-8.912
xy4.341
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.766 -0.446 0.000
y -0.446 10.511 0.000
z 0.000 0.000 7.387


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000