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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: HF/CEP-31G

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/CEP-31G
 hartrees
Energy at 0K-11.038625
Energy at 298.15K-11.042590
HF Energy-11.038625
Nuclear repulsion energy18.571601
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/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 A' 3245 2925 58.22      
2 A' 3156 2845 18.01      
3 A' 2635 2375 165.17      
4 A' 1618 1459 8.29      
5 A' 1502 1354 79.81      
6 A' 1305 1177 51.02      
7 A' 1162 1047 67.85      
8 A' 995 897 11.19      
9 A' 690 622 0.96      
10 A" 3291 2967 71.86      
11 A" 2692 2426 297.07      
12 A" 1588 1432 9.72      
13 A" 1147 1034 26.16      
14 A" 731 659 1.72      
15 A" 102 92 1.71      

Unscaled Zero Point Vibrational Energy (zpe) 12929.6 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 11654.8 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 HF/CEP-31G
ABC
3.19632 0.69739 0.63931

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.011 -0.697 0.000
B2 -0.011 0.887 0.000
H3 1.042 -1.012 0.000
H4 -0.468 -1.129 0.890
H5 -0.468 -1.129 -0.890
H6 0.011 1.509 -1.030
H7 0.011 1.509 1.030

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.58381.09961.09031.09032.43442.4344
B21.58382.17182.25102.25101.20311.2031
H31.09962.17181.75721.75722.91212.9121
H41.09032.25101.75721.78103.29802.6850
H51.09032.25101.75721.78102.68503.2980
H62.43441.20312.91213.29802.68502.0592
H72.43441.20312.91212.68503.29802.0592

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.133 C1 B2 H7 121.133
B2 C1 H3 106.668 B2 C1 H4 113.369
B2 C1 H5 113.369 H3 C1 H4 106.721
H3 C1 H5 106.721 H4 C1 H5 109.516
H6 B2 H7 117.691
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.254      
2 B -0.189      
3 H 0.116      
4 H 0.126      
5 H 0.126      
6 H 0.037      
7 H 0.037      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.098 -0.432 0.000 0.443
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.510 -0.112 0.000
y -0.112 -16.421 0.000
z 0.000 0.000 -15.465
Traceless
 xyz
x 2.433 -0.112 0.000
y -0.112 -1.934 0.000
z 0.000 0.000 -0.499
Polar
3z2-r2-0.998
x2-y22.912
xy-0.112
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.533 0.003 0.000
y 0.003 3.366 0.000
z 0.000 0.000 2.971


<r2> (average value of r2) Å2
<r2> 27.115
(<r2>)1/2 5.207