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All results from a given calculation for CH3OCHO (methyl formate)

using model chemistry: B2PLYP=FULLultrafine/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULLultrafine/cc-pVTZ
 hartrees
Energy at 0K-229.002336
Energy at 298.15K 
HF Energy-228.723552
Nuclear repulsion energy122.482310
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 B2PLYP=FULLultrafine/cc-pVTZ
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' 3191 3049 11.91 60.36 0.64 0.78
2 A' 3084 2947 6.14 171.18 0.01 0.02
3 A' 3079 2941 69.54 87.70 0.50 0.67
4 A' 1791 1711 271.45 6.12 0.21 0.34
5 A' 1518 1450 9.71 5.64 0.73 0.85
6 A' 1482 1416 4.08 1.48 0.63 0.77
7 A' 1410 1347 1.59 6.33 0.36 0.53
8 A' 1241 1186 197.75 1.24 0.10 0.19
9 A' 1193 1139 119.00 1.47 0.74 0.85
10 A' 943 901 23.40 11.24 0.24 0.38
11 A' 778 744 7.78 2.52 0.69 0.82
12 A' 304 290 13.84 1.10 0.33 0.49
13 A" 3158 3017 17.12 40.14 0.75 0.86
14 A" 1505 1438 9.05 7.91 0.75 0.86
15 A" 1188 1135 1.42 1.65 0.75 0.86
16 A" 1053 1006 0.00 1.51 0.75 0.86
17 A" 346 331 25.40 2.35 0.75 0.86
18 A" 137 131 0.14 0.12 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13700.5 cm-1
Scaled (by 0.9554) Zero Point Vibrational Energy (zpe) 13089.5 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 B2PLYP=FULLultrafine/cc-pVTZ
ABC
0.67131 0.23045 0.17724

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.359 0.406 0.000
O2 0.000 0.874 0.000
C3 -0.929 -0.089 0.000
O4 -0.717 -1.271 0.000
H5 1.974 1.296 0.000
H6 1.552 -0.194 0.884
H7 1.552 -0.194 -0.884
H8 -1.921 0.371 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.43752.34122.66881.08241.08571.08573.2800
O21.43751.33802.26202.01872.08122.08121.9855
C32.34121.33801.20163.21682.63632.63631.0927
O42.66882.26201.20163.71962.66302.66302.0361
H51.08242.01873.21683.71961.78361.78364.0031
H61.08572.08122.63632.66301.78361.76853.6278
H71.08572.08122.63632.66301.78361.76853.6278
H83.28001.98551.09272.03614.00313.62783.6278

picture of methyl formate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 114.976 O2 C1 H5 105.601
O2 C1 H6 110.365 O2 C1 H7 110.365
O2 C3 O4 125.834 O2 C3 H8 109.122
O4 C3 H8 125.044 H5 C1 H6 110.705
H5 C1 H7 110.705 H6 C1 H7 109.071
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.121      
2 O -0.208      
3 C 0.212      
4 O -0.302      
5 H 0.120      
6 H 0.106      
7 H 0.106      
8 H 0.087      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.934 1.602 0.000 1.854
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.461 -1.176 -0.009
y -1.176 -28.292 0.001
z -0.009 0.001 -23.106
Traceless
 xyz
x 6.238 -1.176 -0.009
y -1.176 -7.008 0.001
z -0.009 0.001 0.770
Polar
3z2-r21.540
x2-y28.830
xy-1.176
xz-0.009
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.341 0.323 0.001
y 0.323 4.854 -0.001
z 0.001 -0.001 3.417


<r2> (average value of r2) Å2
<r2> 71.066
(<r2>)1/2 8.430