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

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-305.888839
Energy at 298.15K-305.900557
HF Energy-305.287260
Nuclear repulsion energy241.643668
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 MP2/3-21G*
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 3509 3339 0.00      
2 Ag 3094 2943 0.00      
3 Ag 3035 2887 0.00      
4 Ag 1631 1552 0.00      
5 Ag 1592 1514 0.00      
6 Ag 1499 1426 0.00      
7 Ag 1419 1350 0.00      
8 Ag 1295 1232 0.00      
9 Ag 1068 1016 0.00      
10 Ag 1055 1004 0.00      
11 Ag 995 946 0.00      
12 Ag 371 353 0.00      
13 Ag 319 304 0.00      
14 Au 3159 3005 59.71      
15 Au 3067 2918 103.01      
16 Au 1392 1325 4.68      
17 Au 1242 1182 1.78      
18 Au 1003 955 2.66      
19 Au 793 754 0.51      
20 Au 301 287 281.09      
21 Au 115 109 23.35      
22 Au 80 76 2.31      
23 Bg 3135 2982 0.00      
24 Bg 3068 2919 0.00      
25 Bg 1381 1313 0.00      
26 Bg 1340 1274 0.00      
27 Bg 1208 1149 0.00      
28 Bg 869 827 0.00      
29 Bg 296 282 0.00      
30 Bg 162 154 0.00      
31 Bu 3509 3339 0.95      
32 Bu 3102 2951 37.58      
33 Bu 3034 2887 76.03      
34 Bu 1633 1553 4.78      
35 Bu 1599 1521 6.56      
36 Bu 1504 1431 15.45      
37 Bu 1360 1294 46.24      
38 Bu 1247 1186 69.90      
39 Bu 1028 978 122.64      
40 Bu 978 930 1.67      
41 Bu 509 484 47.95      
42 Bu 138 131 9.12      

Unscaled Zero Point Vibrational Energy (zpe) 31566.6 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 30029.3 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 MP2/3-21G*
ABC
0.54801 0.03759 0.03614

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.258 2.813 0.000
O2 -1.258 -2.813 0.000
C3 1.421 1.349 0.000
C4 -1.421 -1.349 0.000
C5 0.000 0.772 0.000
C6 0.000 -0.772 0.000
H7 2.165 3.216 0.000
H8 -2.165 -3.216 0.000
H9 -0.520 1.155 0.885
H10 -0.520 1.155 -0.885
H11 0.520 -1.155 0.885
H12 0.520 -1.155 -0.885
H13 -1.963 -0.995 -0.890
H14 -1.963 -0.995 0.890
H15 1.963 0.995 -0.890
H16 1.963 0.995 0.890

Atom - Atom Distances (Å)
  O1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O16.16291.47294.94982.39733.79950.99266.93292.58762.58764.13204.13205.06645.06642.14272.1427
O26.16294.94981.47293.79952.39736.93290.99264.13204.13202.58762.58762.14272.14275.06645.0664
C31.47294.94983.91911.53392.55342.00955.80522.14292.14292.80472.80474.21184.21181.10001.1000
C44.94981.47293.91912.55341.53395.80522.00952.80472.80472.14292.14291.10001.10004.21184.2118
C52.39733.79951.53392.55341.54463.26484.53791.09611.09612.18402.18402.78722.78722.16652.1665
C63.79952.39732.55341.53391.54464.53793.26482.18402.18401.09611.09612.16652.16652.78722.7872
H70.99266.93292.00955.80523.26484.53797.75363.49913.49914.75334.75335.96375.96372.40062.4006
H86.93290.99265.80522.00954.53793.26487.75364.75334.75333.49913.49912.40062.40065.96375.9637
H92.58764.13202.14292.80471.09612.18403.49914.75331.77082.53403.09143.13952.58933.05672.4882
H102.58764.13202.14292.80471.09612.18403.49914.75331.77083.09142.53402.58933.13952.48823.0567
H114.13202.58762.80472.14292.18401.09614.75333.49912.53403.09141.77083.05672.48823.13952.5893
H124.13202.58762.80472.14292.18401.09614.75333.49913.09142.53401.77082.48823.05672.58933.1395
H135.06642.14274.21181.10002.78722.16655.96372.40063.13952.58933.05672.48821.78004.40124.7475
H145.06642.14274.21181.10002.78722.16655.96372.40062.58933.13952.48823.05671.78004.74754.4012
H152.14275.06641.10004.21182.16652.78722.40065.96373.05672.48823.13952.58934.40124.74751.7800
H162.14275.06641.10004.21182.16652.78722.40065.96372.48823.05672.58933.13954.74754.40121.7800

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 105.727 O1 C3 H15 111.956
O1 C3 H16 111.956 O2 C4 C6 105.727
O2 C4 H13 111.956 O2 C4 H14 111.956
C3 O1 H7 107.587 C3 C5 C6 112.081
C3 C5 H9 107.980 C3 C5 H10 107.980
C4 O2 H8 107.587 C4 C6 C5 112.081
C4 C6 H11 107.980 C4 C6 H12 107.980
C5 C3 H15 109.579 C5 C3 H16 109.579
C5 C6 H11 110.446 C5 C6 H12 110.446
C6 C4 H13 109.579 C6 C4 H14 109.579
C6 C5 H9 110.446 C6 C5 H10 110.446
H9 C5 H10 107.758 H11 C6 H12 107.758
H13 C4 H14 108.012 H15 C3 H16 108.012
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability