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

using model chemistry: PBEPBE/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/TZVP
 hartrees
Energy at 0K-266.941815
Energy at 298.15K-266.945688
HF Energy-266.941815
Nuclear repulsion energy158.875717
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 PBEPBE/TZVP
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' 3101 3067 3.85      
2 A' 2981 2947 0.12      
3 A' 2836 2804 95.90      
4 A' 1742 1722 138.45      
5 A' 1720 1701 68.82      
6 A' 1406 1390 16.61      
7 A' 1338 1323 49.36      
8 A' 1315 1300 0.69      
9 A' 1198 1185 22.16      
10 A' 972 961 3.10      
11 A' 760 752 15.11      
12 A' 549 543 12.95      
13 A' 468 463 19.29      
14 A' 240 238 15.06      
15 A" 3040 3006 1.08      
16 A" 1406 1391 13.04      
17 A" 1030 1018 3.17      
18 A" 860 850 0.20      
19 A" 449 444 0.05      
20 A" 109 108 13.08      
21 A" 58 58 7.61      

Unscaled Zero Point Vibrational Energy (zpe) 13789.0 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 13634.6 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 PBEPBE/TZVP
ABC
0.30177 0.14539 0.09993

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.833 -0.743 0.000
C2 0.000 0.558 0.000
C3 1.495 0.416 0.000
O4 -0.347 -1.854 0.000
O5 -0.608 1.617 0.000
H6 -1.936 -0.555 0.000
H7 1.969 1.403 0.000
H8 1.816 -0.166 0.878
H9 1.816 -0.166 -0.878

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.54482.59991.21292.37051.11883.52942.84962.8496
C21.54481.50142.43711.22082.23282.14292.14322.1432
C32.59991.50142.92292.42143.56491.09521.10131.1013
O41.21292.43712.92293.48082.05253.99662.88072.8807
O52.37051.22082.42143.48082.54532.58633.13463.1346
H61.11882.23283.56492.05252.54534.36833.87263.8726
H73.52942.14291.09523.99662.58634.36831.80431.8043
H82.84962.14321.10132.88073.13463.87261.80431.7561
H92.84962.14321.10132.88073.13463.87261.80431.7561

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 117.182 C1 C2 O5 117.508
C2 C1 O4 123.753 C2 C1 H6 112.943
C2 C3 H7 110.254 C2 C3 H8 109.917
C2 C3 H9 109.917 C3 C2 O5 125.309
O4 C1 H6 123.304 H7 C3 H8 110.458
H7 C3 H9 110.458 H8 C3 H9 105.745
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.067      
2 C 0.121      
3 C -0.358      
4 O -0.191      
5 O -0.188      
6 H 0.091      
7 H 0.157      
8 H 0.150      
9 H 0.150      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.104 -0.051 0.000 1.105
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.583 2.302 0.000
y 2.302 -38.174 0.000
z 0.000 0.000 -27.669
Traceless
 xyz
x 6.339 2.302 0.000
y 2.302 -11.048 0.000
z 0.000 0.000 4.710
Polar
3z2-r29.419
x2-y211.591
xy2.302
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.935 -0.427 0.000
y -0.427 7.378 0.000
z 0.000 0.000 4.057


<r2> (average value of r2) Å2
<r2> 113.456
(<r2>)1/2 10.652