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 C5H6O (3-Methylfuran)

using model chemistry: CID/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-266.673551
Energy at 298.15K-266.680318
HF Energy-266.171308
Nuclear repulsion energy219.324201
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 CID/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 A' 3394 3158 0.76      
2 A' 3380 3145 0.41      
3 A' 3342 3110 1.04      
4 A' 3194 2972 15.62      
5 A' 3128 2911 20.95      
6 A' 1701 1583 1.45      
7 A' 1618 1506 7.30      
8 A' 1580 1470 12.26      
9 A' 1530 1424 2.12      
10 A' 1438 1338 8.57      
11 A' 1326 1234 0.17      
12 A' 1296 1206 1.41      
13 A' 1222 1137 18.58      
14 A' 1114 1037 6.58      
15 A' 1086 1010 4.47      
16 A' 1061 987 24.26      
17 A' 1002 933 1.35      
18 A' 913 849 37.12      
19 A' 649 604 3.16      
20 A' 334 311 0.94      
21 A" 3184 2962 18.45      
22 A" 1610 1498 6.64      
23 A" 1153 1073 3.82      
24 A" 920 856 2.17      
25 A" 840 781 45.52      
26 A" 800 744 23.91      
27 A" 642 598 0.66      
28 A" 625 582 34.14      
29 A" 269 250 3.02      
30 A" 128 119 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 22238.5 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 20692.9 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 CID/3-21G*
ABC
0.29072 0.11119 0.08166

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.736 -1.462 0.000
C2 -1.100 -0.110 0.000
C3 0.659 -1.485 0.000
C4 0.000 0.679 0.000
C5 1.146 -0.223 0.000
C6 0.052 2.185 0.000
H7 -2.152 0.095 0.000
H8 1.115 -2.455 0.000
H9 2.182 0.066 0.000
H10 -0.956 2.604 0.000
H11 0.575 2.555 0.885
H12 0.575 2.555 -0.885

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
O11.39971.39552.26352.25333.73152.10492.10043.29354.07124.31684.3168
C21.39972.23301.35382.24932.56891.07223.22553.28652.71773.26993.2699
C31.39552.23302.26211.35283.72053.22551.07142.17354.39614.13674.1367
C42.26351.35382.26211.45851.50772.23023.32612.26592.14902.15262.1526
C52.25332.24931.35281.45852.64533.31412.23221.07493.52242.97102.9710
C63.73152.56893.72051.50772.64533.03834.76053.00401.09131.09191.0919
H72.10491.07223.22552.23023.31413.03834.14474.33422.77933.77783.7778
H82.10043.22551.07143.32612.23224.76054.14472.73775.46585.11605.1160
H93.29353.28652.17352.26591.07493.00404.33422.73774.03483.09163.0916
H104.07122.71774.39612.14903.52241.09132.77935.46584.03481.76851.7685
H114.31683.26994.13672.15262.97101.09193.77785.11603.09161.76851.7697
H124.31683.26994.13672.15262.97101.09193.77785.11603.09161.76851.7697

picture of 3-Methylfuran state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.563 O1 C2 H7 116.130
O1 C3 C5 110.137 O1 C3 H8 116.111
C2 O1 C3 106.044 C2 C4 C5 106.164
C2 C4 C6 127.642 C3 C5 C4 107.092
C3 C5 H9 126.713 C4 C2 H7 133.306
C4 C5 H9 126.196 C4 C6 H10 110.529
C4 C6 H11 110.780 C4 C6 H12 110.780
C5 C3 H8 133.752 C5 C4 C6 126.194
H10 C6 H11 108.196 H10 C6 H12 108.196
H11 C6 H12 108.263
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability