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 C7H16 (heptane)

using model chemistry: HF/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/aug-cc-pVDZ
 hartrees
Energy at 0K-274.431651
Energy at 298.15K-274.449328
Nuclear repulsion energy307.514455
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 HF/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3223 2935 84.13      
2 A1 3159 2876 4.14      
3 A1 3155 2873 214.51      
4 A1 3145 2864 7.29      
5 A1 3139 2859 0.11      
6 A1 1613 1468 8.65      
7 A1 1600 1457 0.81      
8 A1 1589 1447 0.36      
9 A1 1587 1445 0.41      
10 A1 1530 1393 1.61      
11 A1 1511 1376 0.79      
12 A1 1416 1289 0.01      
13 A1 1242 1131 0.58      
14 A1 1137 1035 0.42      
15 A1 1064 968 0.01      
16 A1 978 890 0.68      
17 A1 446 406 0.02      
18 A1 320 291 0.00      
19 A1 108 98 0.00      
20 A2 3222 2934 0.00      
21 A2 3187 2902 0.00      
22 A2 3161 2878 0.00      
23 A2 1593 1451 0.00      
24 A2 1428 1301 0.00      
25 A2 1419 1292 0.00      
26 A2 1333 1214 0.00      
27 A2 1091 993 0.00      
28 A2 901 820 0.00      
29 A2 779 709 0.00      
30 A2 264 241 0.00      
31 A2 150 136 0.00      
32 A2 77 70 0.00      
33 B1 3223 2935 264.00      
34 B1 3201 2915 76.53      
35 B1 3173 2889 0.16      
36 B1 3156 2874 0.10      
37 B1 1593 1451 11.93      
38 B1 1434 1306 0.73      
39 B1 1387 1263 0.21      
40 B1 1297 1181 0.00      
41 B1 999 910 0.27      
42 B1 820 747 0.67      
43 B1 771 702 2.96      
44 B1 268 244 0.00      
45 B1 151 137 0.00      
46 B1 69 63 0.00      
47 B2 3223 2935 49.21      
48 B2 3157 2875 46.71      
49 B2 3150 2869 15.45      
50 B2 3137 2857 0.96      
51 B2 1607 1463 0.45      
52 B2 1592 1449 0.50      
53 B2 1586 1444 0.58      
54 B2 1541 1403 0.56      
55 B2 1521 1385 1.54      
56 B2 1475 1343 1.62      
57 B2 1346 1226 4.64      
58 B2 1163 1059 0.85      
59 B2 1136 1035 0.01      
60 B2 1107 1008 0.23      
61 B2 939 855 1.32      
62 B2 512 467 0.11      
63 B2 263 240 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 50280.0 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 45785.0 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 HF/aug-cc-pVDZ
ABC
0.40594 0.02415 0.02348

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.492
C2 0.000 1.279 -0.346
C3 0.000 -1.279 -0.346
C4 0.000 2.557 0.493
C5 0.000 -2.557 0.493
C6 0.000 3.832 -0.349
C7 0.000 -3.832 -0.349
H8 -0.875 0.000 1.148
H9 0.875 0.000 1.148
H10 -0.875 1.280 -1.003
H11 0.875 1.280 -1.003
H12 0.875 -1.280 -1.003
H13 -0.875 -1.280 -1.003
H14 0.875 2.558 1.148
H15 -0.875 2.558 1.148
H16 -0.875 -2.558 1.148
H17 0.875 -2.558 1.148
H18 0.000 4.722 0.283
H19 0.882 3.880 -0.991
H20 -0.882 3.880 -0.991
H21 0.000 -4.722 0.283
H22 -0.882 -3.880 -0.991
H23 0.882 -3.880 -0.991

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18 H19 H20 H21 H22 H23
C11.52901.52902.55712.55713.92323.92321.09411.09412.15392.15392.15392.15392.78182.78182.78182.78184.72624.24624.24624.72624.24624.2462
C21.52902.55761.52903.92662.55335.11092.15302.15301.09421.09422.78312.78312.15292.15294.20934.20933.49992.82122.82126.03335.27315.2731
C31.52902.55763.92661.52905.11092.55332.15302.15302.78312.78311.09421.09424.20934.20932.15292.15296.03335.27315.27313.49992.82122.8212
C42.55711.52903.92665.11421.52766.44442.78122.78122.15252.15254.21044.21041.09341.09345.23045.23042.17462.17462.17467.28176.66446.6644
C52.55713.92661.52905.11426.44441.52762.78122.78124.21044.21042.15252.15255.23045.23041.09341.09347.28176.66446.66442.17462.17462.1746
C63.92322.55335.11091.52766.44447.66424.20634.20632.77602.77605.22785.22782.15202.15206.62096.62091.09121.09201.09208.57707.78887.7888
C73.92325.11092.55336.44441.52767.66424.20634.20635.22785.22782.77602.77606.62096.62092.15202.15208.57707.78887.78881.09121.09201.0920
H81.09412.15302.15302.78122.78124.20634.20631.75052.50343.05473.05472.50343.09922.55772.55773.09924.87934.76644.43074.87934.43074.7664
H91.09412.15302.15302.78122.78124.20634.20631.75053.05472.50342.50343.05472.55773.09923.09922.55774.87934.43074.76644.87934.76644.4307
H102.15391.09422.78312.15254.21042.77605.22782.50343.05471.75053.10162.56043.05342.50204.39974.73503.77673.13782.59976.20015.16015.4510
H112.15391.09422.78312.15254.21042.77605.22783.05472.50341.75052.56043.10162.50203.05344.73504.39973.77672.59973.13786.20015.45105.1601
H122.15392.78311.09424.21042.15255.22782.77603.05472.50343.10162.56041.75054.39974.73503.05342.50206.20015.16015.45103.77673.13782.5997
H132.15392.78311.09424.21042.15255.22782.77602.50343.05472.56043.10161.75054.73504.39972.50203.05346.20015.45105.16013.77672.59973.1378
H142.78182.15294.20931.09345.23042.15206.62093.09922.55773.05342.50204.39974.73501.74995.40645.11542.48922.51513.06797.38257.00766.7838
H152.78182.15294.20931.09345.23042.15206.62092.55773.09922.50203.05344.73504.39971.74995.11545.40642.48923.06792.51517.38256.78387.0076
H162.78184.20932.15295.23041.09346.62092.15202.55773.09924.39974.73503.05342.50205.40645.11541.74997.38257.00766.78382.48922.51513.0679
H172.78184.20932.15295.23041.09346.62092.15203.09922.55774.73504.39972.50203.05345.11545.40641.74997.38256.78387.00762.48923.06792.5151
H184.72623.49996.03332.17467.28171.09128.57704.87934.87933.77673.77676.20016.20012.48922.48927.38257.38251.76361.76369.44328.74008.7400
H194.24622.82125.27312.17466.66441.09207.78884.76644.43073.13782.59975.16015.45102.51513.06797.00766.78381.76361.76378.74007.95777.7598
H204.24622.82125.27312.17466.66441.09207.78884.43074.76642.59973.13785.45105.16013.06792.51516.78387.00761.76361.76378.74007.75987.9577
H214.72626.03333.49997.28172.17468.57701.09124.87934.87936.20016.20013.77673.77677.38257.38252.48922.48929.44328.74008.74001.76361.7636
H224.24625.27312.82126.66442.17467.78881.09204.43074.76645.16015.45103.13782.59977.00766.78382.51513.06798.74007.95777.75981.76361.7637
H234.24625.27312.82126.66442.17467.78881.09204.76644.43075.45105.16012.59973.13786.78387.00763.06792.51518.74007.75987.95771.76361.7637

picture of heptane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 113.483 C1 C2 H10 109.272
C1 C2 H11 109.272 C1 C3 C5 113.483
C1 C3 H12 109.272 C1 C3 H13 109.272
C2 C1 C3 113.518 C2 C1 H8 109.204
C2 C1 H9 109.204 C2 C4 C6 113.301
C2 C4 H14 109.237 C2 C4 H15 109.237
C3 C1 H8 109.204 C3 C1 H9 109.204
C3 C5 C7 113.301 C3 C5 H16 109.237
C3 C5 H17 109.237 C4 C2 H10 109.160
C4 C2 H11 109.160 C4 C6 H18 111.179
C4 C6 H19 111.131 C4 C6 H20 111.131
C5 C3 H12 109.160 C5 C3 H13 109.160
C5 C7 H21 111.179 C5 C7 H22 111.131
C5 C7 H23 111.131 C6 C4 H14 109.261
C6 C4 H15 109.261 C7 C5 H16 109.261
C7 C5 H17 109.261 H8 C1 H9 106.251
H10 C2 H11 106.239 H12 C3 H13 106.239
H14 C4 H15 106.304 H16 C5 H17 106.304
H18 C6 H19 107.760 H18 C6 H20 107.760
H19 C6 H20 107.714 H21 C7 H22 107.760
H21 C7 H23 107.760 H22 C7 H23 107.714
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.183      
2 C 0.227      
3 C 0.227      
4 C 0.433      
5 C 0.433      
6 C 0.558      
7 C 0.558      
8 H -0.227      
9 H -0.227      
10 H -0.222      
11 H -0.222      
12 H -0.222      
13 H -0.222      
14 H -0.189      
15 H -0.189      
16 H -0.189      
17 H -0.189      
18 H -0.075      
19 H -0.093      
20 H -0.093      
21 H -0.075      
22 H -0.093      
23 H -0.093      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.090 0.090
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -47.862 0.000 0.000
y 0.000 -50.669 0.000
z 0.000 0.000 -49.695
Traceless
 xyz
x 2.320 0.000 0.000
y 0.000 -1.891 0.000
z 0.000 0.000 -0.430
Polar
3z2-r2-0.859
x2-y22.807
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.943 0.000 0.000
y 0.000 15.358 0.000
z 0.000 0.000 11.669


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