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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: BLYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/3-21G
 hartrees
Energy at 0K-65.523737
Energy at 298.15K-65.527620
HF Energy-65.523737
Nuclear repulsion energy31.486244
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 BLYP/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 2985 2969 11.98      
2 A' 2880 2864 6.19      
3 A' 2554 2540 87.49      
4 A' 1504 1495 3.17      
5 A' 1353 1346 56.92      
6 A' 1234 1227 35.62      
7 A' 1080 1074 71.55      
8 A' 951 945 13.71      
9 A' 612 609 0.83      
10 A" 3031 3014 19.08      
11 A" 2626 2612 128.21      
12 A" 1470 1462 4.60      
13 A" 1062 1056 22.41      
14 A" 687 683 0.05      
15 A" 112 112 3.35      

Unscaled Zero Point Vibrational Energy (zpe) 12069.9 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 12003.5 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 BLYP/3-21G
ABC
3.15051 0.70277 0.64281

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.016 -0.689 0.000
B2 -0.016 0.883 0.000
H3 1.060 -0.995 0.000
H4 -0.457 -1.145 0.904
H5 -0.457 -1.145 -0.904
H6 0.012 1.504 -1.032
H7 0.012 1.504 1.032

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.57201.11781.10391.10392.42452.4245
B21.57202.16342.26312.26311.20531.2053
H31.11782.16341.77151.77152.89942.8994
H41.10392.26311.77151.80743.31442.6933
H51.10392.26311.77151.80742.69333.3144
H62.42451.20532.89943.31442.69332.0647
H72.42451.20532.89942.69333.31442.0647

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.042 C1 B2 H7 121.042
B2 C1 H3 105.849 B2 C1 H4 114.366
B2 C1 H5 114.366 H3 C1 H4 105.763
H3 C1 H5 105.763 H4 C1 H5 109.899
H6 B2 H7 117.846
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.753      
2 B 0.168      
3 H 0.197      
4 H 0.185      
5 H 0.185      
6 H 0.010      
7 H 0.010      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.162 -0.774 0.000 0.791
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.746 -0.211 0.000
y -0.211 -16.172 0.000
z 0.000 0.000 -15.628
Traceless
 xyz
x 2.154 -0.211 0.000
y -0.211 -1.484 0.000
z 0.000 0.000 -0.669
Polar
3z2-r2-1.338
x2-y22.425
xy-0.211
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.705 -0.045 0.000
y -0.045 4.078 0.000
z 0.000 0.000 3.458


<r2> (average value of r2) Å2
<r2> 29.673
(<r2>)1/2 5.447