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All results from a given calculation for C3H4O2 (Methyl glyoxal)

using model chemistry: wB97X-D/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 wB97X-D/cc-pVDZ
 hartrees
Energy at 0K-267.076447
Energy at 298.15K 
HF Energy-267.076447
Nuclear repulsion energy159.793654
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 wB97X-D/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' 3206 3054 3.93      
2 A' 3074 2928 0.13      
3 A' 2999 2857 66.94      
4 A' 1860 1772 41.32      
5 A' 1846 1759 222.09      
6 A' 1465 1396 16.12      
7 A' 1412 1345 43.87      
8 A' 1375 1310 2.57      
9 A' 1266 1206 21.14      
10 A' 1022 973 4.55      
11 A' 797 759 12.60      
12 A' 579 551 13.54      
13 A' 489 466 26.10      
14 A' 253 241 17.80      
15 A" 3147 2998 1.64      
16 A" 1466 1396 12.94      
17 A" 1076 1025 4.06      
18 A" 903 860 0.22      
19 A" 466 444 0.46      
20 A" 101 96 24.36      
21 A" 82i 78i 3.03      

Unscaled Zero Point Vibrational Energy (zpe) 14359.9 cm-1
Scaled (by 0.9526) Zero Point Vibrational Energy (zpe) 13679.2 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 wB97X-D/cc-pVDZ
ABC
0.30355 0.14773 0.10122

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.843 -0.735 0.000
C2 0.000 0.555 0.000
C3 1.496 0.398 0.000
O4 -0.360 -1.838 0.000
O5 -0.587 1.613 0.000
H6 -1.936 -0.550 0.000
H7 1.966 1.382 0.000
H8 1.811 -0.173 0.878
H9 1.811 -0.173 -0.878

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.54102.59921.20402.36181.10843.51742.85142.8514
C21.54101.50442.41981.20962.22932.13302.14072.1407
C32.59921.50442.90602.41123.56071.09011.09421.0942
O41.20402.41982.90603.45822.03513.97202.87302.8730
O52.36181.20962.41123.45822.54952.56343.11653.1165
H61.10842.22933.56072.03512.54954.35433.86703.8670
H73.51742.13301.09013.97202.56344.35431.79291.7929
H82.85142.14071.09422.87303.11653.86701.79291.7561
H92.85142.14071.09422.87303.11653.86701.79291.7561

picture of Methyl glyoxal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 117.178 C1 C2 O5 117.823
C2 C1 O4 123.182 C2 C1 H6 113.574
C2 C3 H7 109.560 C2 C3 H8 109.928
C2 C3 H9 109.928 C3 C2 O5 125.000
O4 C1 H6 123.243 H7 C3 H8 110.328
H7 C3 H9 110.328 H8 C3 H9 106.732
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.182      
2 C 0.309      
3 C -0.512      
4 O -0.342      
5 O -0.390      
6 H 0.160      
7 H 0.197      
8 H 0.198      
9 H 0.198      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.034 -0.063 0.000 1.036
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.965 2.513 0.000
y 2.513 -38.884 0.000
z 0.000 0.000 -27.510
Traceless
 xyz
x 7.231 2.513 0.000
y 2.513 -12.146 0.000
z 0.000 0.000 4.914
Polar
3z2-r29.829
x2-y212.918
xy2.513
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.438 -0.572 0.000
y -0.572 7.286 0.000
z 0.000 0.000 3.978


<r2> (average value of r2) Å2
<r2> 112.296
(<r2>)1/2 10.597