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All results from a given calculation for C3H5 (Allyl radical)

using model chemistry: CCSD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at CCSD/3-21G*
 hartrees
Energy at 0K-116.098896
Energy at 298.15K-116.103147
HF Energy-115.821925
Nuclear repulsion energy64.397215
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 CCSD/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 A1 3219 3036 20.20      
2 A1 3129 2951 0.94      
3 A1 3119 2941 14.43      
4 A1 1565 1476 2.10      
5 A1 1292 1218 0.14      
6 A1 1042 983 0.22      
7 A1 448 422 0.00      
8 A2 766 722 0.00      
9 A2 549 518 0.00      
10 B1 992 936 23.84      
11 B1 781 736 82.30      
12 B1 528 498 13.42      
13 B2 3214 3031 6.91      
14 B2 3122 2944 9.15      
15 B2 1537 1450 1.23      
16 B2 1465 1382 3.06      
17 B2 1169 1102 0.04      
18 B2 976 920 0.25      

Unscaled Zero Point Vibrational Energy (zpe) 14456.4 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 13633.8 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 CCSD/3-21G*
ABC
1.79306 0.33932 0.28533

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.452
H2 0.000 0.000 1.545
C3 0.000 1.237 -0.199
C4 0.000 -1.237 -0.199
H5 0.000 2.175 0.353
H6 0.000 -2.175 0.353
H7 0.000 1.301 -1.288
H8 0.000 -1.301 -1.288

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6 H7 H8
C11.09291.39811.39812.17682.17682.17262.1726
H21.09292.13842.13842.47972.47973.11733.1173
C31.39812.13842.47441.08813.45621.09042.7620
C41.39812.13842.47443.45621.08812.76201.0904
H52.17682.47971.08813.45624.34921.85883.8438
H62.17682.47973.45621.08814.34923.84381.8588
H72.17263.11731.09042.76201.85883.84382.6027
H82.17263.11732.76201.09043.84381.85882.6027

picture of Allyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H5 121.724 C1 C3 H7 121.135
C1 C4 H6 121.724 C1 C4 H8 121.135
H2 C1 C3 117.763 H2 C1 C4 117.763
C3 C1 C4 124.474 H5 C3 H7 117.140
H6 C4 H8 117.140
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability