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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: LSDA/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at LSDA/6-31G(2df,p)
 hartrees
Energy at 0K-65.535185
Energy at 298.15K-65.539079
HF Energy-65.535185
Nuclear repulsion energy31.898389
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 LSDA/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' 3038 2990 5.41      
2 A' 2909 2862 7.21      
3 A' 2529 2489 84.78      
4 A' 1400 1378 2.61      
5 A' 1259 1238 80.52      
6 A' 1180 1161 1.48      
7 A' 1036 1019 49.08      
8 A' 985 969 12.63      
9 A' 455 448 2.68      
10 A" 3100 3051 4.75      
11 A" 2610 2568 105.66      
12 A" 1340 1319 4.59      
13 A" 1012 996 17.40      
14 A" 646 636 0.05      
15 A" 222 218 3.59      

Unscaled Zero Point Vibrational Energy (zpe) 11860.2 cm-1
Scaled (by 0.984) Zero Point Vibrational Energy (zpe) 11670.4 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 LSDA/6-31G(2df,p)
ABC
3.16614 0.73464 0.66735

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.027 -0.673 0.000
B2 -0.027 0.859 0.000
H3 1.073 -0.874 0.000
H4 -0.406 -1.168 0.906
H5 -0.406 -1.168 -0.906
H6 0.018 1.477 -1.036
H7 0.018 1.477 1.036

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.53251.11751.10011.10012.38762.3876
B21.53252.05212.25292.25291.20721.2072
H31.11752.05211.75921.75922.77722.7772
H41.10012.25291.75921.81283.30922.6824
H51.10012.25291.75921.81282.68243.3092
H62.38761.20722.77723.30922.68242.0718
H72.38761.20722.77722.68243.30922.0718

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.804 C1 B2 H7 120.804
B2 C1 H3 100.326 B2 C1 H4 116.731
B2 C1 H5 116.731 H3 C1 H4 104.984
H3 C1 H5 104.984 H4 C1 H5 110.954
H6 B2 H7 118.216
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.449      
2 B -0.066      
3 H 0.184      
4 H 0.160      
5 H 0.160      
6 H 0.006      
7 H 0.006      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.202 -0.944 0.000 0.966
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.602 -0.224 0.000
y -0.224 -15.891 0.000
z 0.000 0.000 -15.153
Traceless
 xyz
x 1.920 -0.224 0.000
y -0.224 -1.514 0.000
z 0.000 0.000 -0.406
Polar
3z2-r2-0.812
x2-y22.289
xy-0.224
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.066 -0.021 0.000
y -0.021 4.548 0.000
z 0.000 0.000 3.858


<r2> (average value of r2) Å2
<r2> 28.842
(<r2>)1/2 5.370