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 C6H5CH2 (benzyl radical)

using model chemistry: MP2/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at MP2/CEP-31G*
 hartrees
Energy at 0K-43.218817
Energy at 298.15K-43.225866
HF Energy-42.460289
Nuclear repulsion energy130.541665
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/CEP-31G*
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 3251 3087 14.67      
2 A1 3232 3069 6.42      
3 A1 3210 3048 16.29      
4 A1 3207 3045 0.04      
5 A1 1704 1617 0.68      
6 A1 1541 1463 12.66      
7 A1 1528 1451 0.01      
8 A1 1287 1222 5.01      
9 A1 1205 1144 0.20      
10 A1 1076 1022 4.69      
11 A1 991 941 0.02      
12 A1 851 808 0.76      
13 A1 531 504 0.57      
14 A2 1077 1023 0.00      
15 A2 949 901 0.00      
16 A2 505 479 0.00      
17 A2 424 403 0.00      
18 B1 1055 1002 0.05      
19 B1 1000 949 12.21      
20 B1 835 793 143.89      
21 B1 727 690 7.62      
22 B1 643 610 60.08      
23 B1 505 480 29.02      
24 B1 224 213 2.18      
25 B2 3318 3151 8.75      
26 B2 3240 3076 31.81      
27 B2 3217 3054 0.15      
28 B2 1691 1605 0.70      
29 B2 1531 1453 7.23      
30 B2 1364 1295 0.06      
31 B2 1325 1258 0.16      
32 B2 1172 1113 0.82      
33 B2 1154 1096 8.36      
34 B2 993 943 1.93      
35 B2 628 596 0.00      
36 B2 347 330 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 25768.6 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 24464.7 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/CEP-31G*
ABC
0.18185 0.08891 0.05971

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.991
C2 0.000 1.228 0.253
C3 0.000 1.220 -1.139
C4 0.000 0.000 -1.850
C5 0.000 -1.220 -1.139
C6 0.000 -1.228 0.253
C7 0.000 0.000 2.422
H8 0.000 2.175 0.801
H9 0.000 2.168 -1.687
H10 0.000 0.000 -2.944
H11 0.000 -2.168 -1.687
H12 0.000 -2.175 0.801
H13 0.000 0.937 2.985
H14 0.000 -0.937 2.985

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 H8 H9 H10 H11 H12 H13 H14
C11.43272.45412.84032.45411.43271.43172.18373.44513.93443.44512.18372.20382.2038
C21.43271.39132.43462.81582.45602.49321.09452.15523.42413.91063.44722.74823.4864
C32.45411.39131.41212.44022.81583.76432.16191.09482.17883.43203.91034.13384.6541
C42.84032.43461.41211.41212.43464.27203.42882.17391.09422.17393.42884.92504.9250
C52.45412.81582.44021.41211.39133.76433.91033.43202.17881.09482.16194.65414.1338
C61.43272.45602.81582.43461.39132.49323.44723.91063.42412.15521.09453.48642.7482
C71.43172.49323.76434.27203.76432.49322.71344.64605.36624.64602.71341.09311.0931
H82.18371.09452.16193.42883.91033.44722.71342.48754.33055.00524.35082.51133.8026
H93.44512.15521.09482.17393.43203.91064.64602.48752.50594.33575.00524.83165.6098
H103.93443.42412.17881.09422.17883.42415.36624.33052.50592.50594.33056.00276.0027
H113.44513.91063.43202.17391.09482.15524.64605.00524.33572.50592.48755.60984.8316
H122.18373.44723.91033.42882.16191.09452.71344.35085.00524.33052.48753.80262.5113
H132.20382.74824.13384.92504.65413.48641.09312.51134.83166.00275.60983.80261.8739
H142.20383.48644.65414.92504.13382.74821.09313.80265.60986.00274.83162.51131.8739

picture of benzyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 120.683 C1 C2 H8 118.945
C1 C6 C5 120.683 C1 C6 H12 118.945
C1 C7 H13 120.999 C1 C7 H14 120.999
C2 C1 C6 117.984 C2 C1 C7 121.008
C2 C3 C4 120.553 C2 C3 H9 119.720
C3 C2 H8 120.372 C3 C4 C5 119.542
C3 C4 H10 120.229 C4 C3 H9 119.727
C4 C5 C6 120.553 C4 C5 H11 119.727
C5 C1 C7 150.188 C5 C4 H10 120.229
C5 C6 H12 120.372 C6 C5 H11 119.720
H13 C7 H14 118.001
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability