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All results from a given calculation for C5H8 (1,2-Pentadiene)

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at G4
 hartrees
Energy at 0K-195.133606
Energy at 298.15K-195.126393
HF Energy-195.306826
Nuclear repulsion energy156.507487
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 B3LYP/6-31G(2df,p)
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 3194 3082 4.03      
2 A 3125 3016 5.67      
3 A 3119 3010 11.77      
4 A 3112 3003 29.92      
5 A 3112 3003 28.13      
6 A 3041 2935 19.13      
7 A 3028 2922 19.51      
8 A 3006 2901 36.34      
9 A 2075 2002 25.38      
10 A 1502 1450 4.20      
11 A 1494 1442 5.36      
12 A 1494 1442 1.36      
13 A 1475 1424 1.84      
14 A 1416 1367 2.92      
15 A 1378 1330 17.07      
16 A 1341 1294 2.25      
17 A 1286 1241 0.07      
18 A 1157 1117 1.15      
19 A 1104 1065 2.14      
20 A 1088 1050 2.69      
21 A 1026 991 0.25      
22 A 999 964 0.28      
23 A 910 879 10.84      
24 A 877 846 44.85      
25 A 849 819 2.01      
26 A 791 763 2.30      
27 A 640 618 2.46      
28 A 530 511 3.35      
29 A 363 350 2.44      
30 A 347 335 4.59      
31 A 245 237 0.07      
32 A 153 147 0.18      
33 A 103 99 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 24689.9 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 23825.7 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 B3LYP/6-31G(2df,p)
ABC
0.34191 0.10614 0.08494

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.373 0.508 0.000
C2 1.519 -1.013 -0.000
C3 -0.054 1.010 -0.000
C4 -1.125 0.267 -0.001
C5 -2.200 -0.469 0.000
H6 1.889 0.934 -0.872
H7 1.888 0.934 0.873
H8 1.045 -1.454 0.882
H9 2.574 -1.301 0.000
H10 1.045 -1.453 -0.883
H11 -0.180 2.093 0.000
H12 -2.671 -0.790 0.926
H13 -2.673 -0.791 -0.924

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52791.51292.51013.70441.09911.09912.17592.17182.17592.21934.34724.3490
C21.52792.56222.93753.75852.16492.16491.09421.09401.09423.54014.29684.2983
C31.51292.56221.30352.60602.13082.13072.83803.49992.83801.09033.30833.3098
C42.51012.93751.30351.30253.20723.20742.90664.01812.90642.05572.08942.0896
C53.70443.75852.60601.30254.40964.40903.50354.84623.50423.26191.08701.0870
H61.09912.16492.13083.20724.40961.74583.08072.49562.53192.52695.19564.8770
H71.09912.16492.13073.20744.40901.74582.53192.49563.08072.52674.87405.1966
H82.17591.09422.83802.90663.50353.08072.53191.77211.76433.85433.77474.1857
H92.17181.09403.49994.01814.84622.49562.49561.77211.77214.37135.35075.3524
H102.17591.09422.83802.90643.50422.53193.08071.76431.77213.85454.18563.7770
H112.21933.54011.09032.05573.26192.52692.52673.85434.37133.85453.92033.9220
H124.34724.29683.30832.08941.08705.19564.87403.77475.35074.18563.92031.8496
H134.34904.29833.30982.08961.08704.87705.19664.18575.35243.77703.92201.8496

picture of 1,2-Pentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H8 111.126 C1 C2 H9 110.606
C1 C2 H10 111.126 C1 C3 C4 125.951
C1 C3 H11 116.015 C2 C1 C3 114.743
C2 C1 H6 109.889 C2 C1 H7 109.888
C3 C1 H6 108.242 C3 C1 H7 108.234
C3 C4 C5 179.774 C4 C3 H11 118.033
C4 C5 H12 121.564 C4 C5 H13 121.586
H6 C1 H7 105.412 H8 C2 H9 108.146
H8 C2 H10 107.557 H9 C2 H10 108.147
H12 C5 H13 116.848
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.197      
2 C -0.381      
3 C -0.294      
4 C 0.426      
5 C -0.501      
6 H 0.111      
7 H 0.111      
8 H 0.123      
9 H 0.110      
10 H 0.123      
11 H 0.110      
12 H 0.130      
13 H 0.130      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.418 0.082 0.001 0.426
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 145.007
(<r2>)1/2 12.042