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All results from a given calculation for C4H10O2 (1,4-Butanediol)

using model chemistry: QCISD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at QCISD/3-21G
 hartrees
Energy at 0K-305.945429
Energy at 298.15K-305.957095
HF Energy-305.286287
Nuclear repulsion energy241.017667
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 QCISD/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3469 3362 0.00      
2 Ag 3037 2943 0.00      
3 Ag 2978 2887 0.00      
4 Ag 1608 1558 0.00      
5 Ag 1570 1521 0.00      
6 Ag 1485 1440 0.00      
7 Ag 1407 1363 0.00      
8 Ag 1290 1250 0.00      
9 Ag 1054 1021 0.00      
10 Ag 1042 1010 0.00      
11 Ag 989 958 0.00      
12 Ag 366 355 0.00      
13 Ag 316 306 0.00      
14 Au 3095 3000 64.22      
15 Au 3002 2910 99.69      
16 Au 1372 1330 4.46      
17 Au 1227 1190 2.00      
18 Au 990 959 2.90      
19 Au 780 756 0.35      
20 Au 297 288 277.75      
21 Au 112 108 23.09      
22 Au 78 76 2.67      
23 Bg 3070 2976 0.00      
24 Bg 3004 2911 0.00      
25 Bg 1361 1319 0.00      
26 Bg 1320 1280 0.00      
27 Bg 1192 1156 0.00      
28 Bg 857 830 0.00      
29 Bg 292 283 0.00      
30 Bg 157 153 0.00      
31 Bu 3469 3362 4.84      
32 Bu 3044 2950 40.58      
33 Bu 2978 2886 72.79      
34 Bu 1609 1560 4.78      
35 Bu 1577 1528 6.38      
36 Bu 1490 1444 10.98      
37 Bu 1352 1310 55.99      
38 Bu 1239 1201 71.60      
39 Bu 1024 992 110.51      
40 Bu 963 933 1.38      
41 Bu 504 488 46.15      
42 Bu 137 132 9.10      

Unscaled Zero Point Vibrational Energy (zpe) 31100.8 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 30142.9 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 QCISD/3-21G
ABC
0.54493 0.03740 0.03595

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.265 2.817 0.000
O2 -1.265 -2.817 0.000
C3 1.427 1.352 0.000
C4 -1.427 -1.352 0.000
C5 0.000 0.775 0.000
C6 0.000 -0.775 0.000
H7 2.172 3.223 0.000
H8 -2.172 -3.223 0.000
H9 -0.523 1.159 0.888
H10 -0.523 1.159 -0.888
H11 0.523 -1.159 0.888
H12 0.523 -1.159 -0.888
H13 -1.970 -0.998 -0.894
H14 -1.970 -0.998 0.894
H15 1.970 0.998 -0.894
H16 1.970 0.998 0.894

Atom - Atom Distances (Å)
  O1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O16.17661.47384.96322.40263.80830.99396.94982.59482.59484.14194.14195.08145.08142.14612.1461
O26.17664.96321.47383.80832.40266.94980.99394.14194.14192.59482.59482.14612.14615.08145.0814
C31.47384.96323.93201.53942.56142.01355.82142.15102.15102.81372.81374.22644.22641.10421.1042
C44.96321.47383.93202.56141.53945.82142.01352.81372.81372.15102.15101.10421.10424.22644.2264
C52.40263.80831.53942.56141.54943.27304.54971.10011.10012.19162.19162.79682.79682.17482.1748
C63.80832.40262.56141.53941.54944.54973.27302.19162.19161.10011.10012.17482.17482.79682.7968
H70.99396.94982.01355.82143.27304.54977.77333.50853.50854.76624.76625.98125.98122.40612.4061
H86.94980.99395.82142.01354.54973.27307.77334.76624.76623.50853.50852.40612.40615.98125.9812
H92.59484.14192.15102.81371.10012.19163.50854.76621.77672.54363.10263.15042.59813.06832.4979
H102.59484.14192.15102.81371.10012.19163.50854.76621.77673.10262.54362.59813.15042.49793.0683
H114.14192.59482.81372.15102.19161.10014.76623.50852.54363.10261.77673.06832.49793.15042.5981
H124.14192.59482.81372.15102.19161.10014.76623.50853.10262.54361.77672.49793.06832.59813.1504
H135.08142.14614.22641.10422.79682.17485.98122.40613.15042.59813.06832.49791.78714.41694.7648
H145.08142.14614.22641.10422.79682.17485.98122.40612.59813.15042.49793.06831.78714.76484.4169
H152.14615.08141.10424.22642.17482.79682.40615.98123.06832.49793.15042.59814.41694.76481.7871
H162.14615.08141.10424.22642.17482.79682.40615.98122.49793.06832.59813.15044.76484.41691.7871

picture of 1,4-Butanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C3 C5 105.737 O1 C3 H15 111.909
O1 C3 H16 111.909 O2 C4 C6 105.737
O2 C4 H13 111.909 O2 C4 H14 111.909
C3 O1 H7 107.774 C3 C5 C6 112.043
C3 C5 H9 107.999 C3 C5 H10 107.999
C4 O2 H8 107.774 C4 C6 C5 112.043
C4 C6 H11 107.999 C4 C6 H12 107.999
C5 C3 H15 109.606 C5 C3 H16 109.606
C5 C6 H11 110.473 C5 C6 H12 110.473
C6 C4 H13 109.606 C6 C4 H14 109.606
C6 C5 H9 110.473 C6 C5 H10 110.473
H9 C5 H10 107.703 H11 C6 H12 107.703
H13 C4 H14 108.044 H15 C3 H16 108.044
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability