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All results from a given calculation for C5H8 (Cyclobutane, methylene-)

using model chemistry: HF/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/cc-pVDZ
 hartrees
Energy at 0K-193.957382
Energy at 298.15K-193.966147
Nuclear repulsion energy167.958496
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 HF/cc-pVDZ
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' 3291 2988 8.71      
2 A' 3269 2969 70.66      
3 A' 3242 2944 16.06      
4 A' 3211 2916 49.48      
5 A' 3191 2898 15.99      
6 A' 1905 1730 25.58      
7 A' 1605 1457 0.04      
8 A' 1570 1426 2.43      
9 A' 1540 1398 1.73      
10 A' 1376 1249 3.46      
11 A' 1315 1194 0.27      
12 A' 1185 1076 0.57      
13 A' 1034 938 0.58      
14 A' 1018 924 42.56      
15 A' 952 865 0.40      
16 A' 794 721 1.34      
17 A' 712 647 2.04      
18 A' 415 377 6.61      
19 A' 110 99 0.05      
20 A" 3378 3067 14.82      
21 A" 3247 2949 18.57      
22 A" 3189 2896 58.93      
23 A" 1563 1419 3.58      
24 A" 1399 1270 0.49      
25 A" 1351 1227 0.15      
26 A" 1315 1194 0.36      
27 A" 1292 1173 0.98      
28 A" 1118 1015 0.09      
29 A" 991 900 1.10      
30 A" 977 887 1.14      
31 A" 868 788 0.06      
32 A" 688 625 0.07      
33 A" 379 344 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 26744.5 cm-1
Scaled (by 0.908) Zero Point Vibrational Energy (zpe) 24284.0 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 HF/cc-pVDZ
ABC
0.34983 0.15451 0.11606

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.168 -0.424 1.090
C2 0.168 -0.424 -1.090
C3 0.000 0.623 0.000
C4 -0.030 -1.511 0.000
C5 -0.308 1.905 0.000
H6 -0.544 -0.401 1.916
H7 -0.544 -0.401 -1.916
H8 1.180 -0.428 1.502
H9 1.180 -0.428 -1.502
H10 -0.441 2.453 0.925
H11 -0.441 2.453 -0.925
H12 0.673 -2.344 0.000
H13 -1.045 -1.910 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C12.17941.52021.55212.61461.09073.08861.09282.78242.94493.56462.26482.2063
C22.17941.52021.55212.61463.08861.09072.78241.09283.56462.94492.26482.2063
C31.52021.52022.13431.31842.23902.23902.18012.18012.09752.09753.04212.7401
C41.55211.55212.13433.42722.27332.27332.21202.21204.09134.09131.08981.0907
C52.61462.61461.31843.42723.00653.00653.14843.14841.08371.08374.36043.8854
H61.09073.08862.23902.27333.00653.83121.77313.82803.02194.02772.98802.4898
H73.08861.09072.23902.27333.00653.83123.82801.77314.02773.02192.98802.4898
H81.09282.78242.18012.21203.14841.77313.82803.00423.35564.10122.48653.0664
H92.78241.09282.18012.21203.14843.82801.77313.00424.10123.35562.48653.0664
H102.94493.56462.09754.09131.08373.02194.02773.35564.10121.85075.01054.5005
H113.56462.94492.09754.09131.08374.02773.02194.10123.35561.85075.01054.5005
H122.26482.26483.04211.08984.36042.98802.98802.48652.48655.01055.01051.7722
H132.20632.20632.74011.09073.88542.48982.48983.06643.06644.50054.50051.7722

picture of Cyclobutane, methylene- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C2 91.580 C1 C3 C5 134.045
C1 C4 C2 89.188 C1 C4 H12 116.934
C1 C4 H13 112.015 C2 C3 C5 134.045
C2 C4 H12 116.934 C2 C4 H13 112.015
C3 C1 C4 87.997 C3 C1 H6 117.128
C3 C1 H8 112.051 C3 C2 C4 87.997
C3 C2 H7 117.128 C3 C2 H9 112.051
C3 C5 H10 121.362 C3 C5 H11 121.362
C4 C1 H6 117.607 C4 C1 H8 112.349
C4 C2 H7 117.607 C4 C2 H9 112.349
H6 C1 H8 108.592 H7 C2 H9 108.592
H10 C5 H11 117.276 H12 C4 H13 108.736
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.041 -0.026    
2 C 0.041 -0.027    
3 C -0.291 0.165    
4 C -0.066 0.051    
5 C -0.024 -0.027    
6 H 0.040 -0.026    
7 H 0.040 0.165    
8 H 0.045 0.028    
9 H 0.045 0.029    
10 H 0.033 -0.152    
11 H 0.033 0.180    
12 H 0.026 0.180    
13 H 0.037 -0.540    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.089 -0.536 0.000 0.543
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.600 -0.596 0.000
y -0.596 -32.241 0.000
z 0.000 0.000 -31.101
Traceless
 xyz
x -0.929 -0.596 0.000
y -0.596 -0.391 0.000
z 0.000 0.000 1.320
Polar
3z2-r22.639
x2-y2-0.359
xy-0.596
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.737 -0.911 0.000
y -0.911 9.959 0.000
z 0.000 0.000 7.346


<r2> (average value of r2) Å2
<r2> 115.826
(<r2>)1/2 10.762