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

using model chemistry: PBEPBEultrafine/aug-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 PBEPBEultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-266.883510
Energy at 298.15K-266.887393
HF Energy-266.883510
Nuclear repulsion energy158.440496
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 PBEPBEultrafine/aug-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' 3112 3093 3.91      
2 A' 2978 2960 0.06      
3 A' 2848 2830 89.84      
4 A' 1728 1718 147.58      
5 A' 1708 1698 67.72      
6 A' 1374 1366 15.63      
7 A' 1315 1307 47.34      
8 A' 1294 1286 0.18      
9 A' 1202 1195 13.70      
10 A' 962 956 3.57      
11 A' 769 764 13.69      
12 A' 547 543 11.82      
13 A' 463 460 22.00      
14 A' 237 236 15.42      
15 A" 3046 3027 1.01      
16 A" 1379 1370 10.22      
17 A" 1022 1016 3.38      
18 A" 850 844 0.27      
19 A" 446 444 0.08      
20 A" 110 109 7.19      
21 A" 70 70 14.12      

Unscaled Zero Point Vibrational Energy (zpe) 13729.4 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 13645.6 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 PBEPBEultrafine/aug-cc-pVDZ
ABC
0.30012 0.14492 0.09954

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.833 -0.744 0.000
C2 0.000 0.555 0.000
C3 1.497 0.423 0.000
O4 -0.341 -1.860 0.000
O5 -0.616 1.617 0.000
H6 -1.942 -0.559 0.000
H7 1.967 1.419 0.000
H8 1.820 -0.163 0.883
H9 1.820 -0.163 -0.883

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.54312.60571.21932.37111.12473.53802.85512.8551
C21.54311.50292.43881.22752.23872.14862.14622.1462
C32.60571.50292.93062.42703.57641.10101.10751.1075
O41.21932.43882.93063.48762.06324.00932.88532.8853
O52.37111.22752.42703.48762.54802.59093.14323.1432
H61.12472.23873.57642.06322.54804.38093.88403.8840
H73.53802.14861.10104.00932.59094.38091.81721.8172
H82.85512.14621.10752.88533.14323.88401.81721.7652
H92.85512.14621.10752.88533.14323.88401.81721.7652

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 117.610 C1 C2 O5 117.237
C2 C1 O4 123.551 C2 C1 H6 113.165
C2 C3 H7 110.246 C2 C3 H8 109.675
C2 C3 H9 109.675 C3 C2 O5 125.153
O4 C1 H6 123.284 H7 C3 H8 110.734
H7 C3 H9 110.734 H8 C3 H9 105.677
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.819      
2 C 0.256      
3 C 0.495      
4 O -0.484      
5 O -0.522      
6 H -0.228      
7 H -0.221      
8 H -0.057      
9 H -0.057      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.152 -0.047 0.000 1.153
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.695 2.403 0.000
y 2.403 -38.374 0.000
z 0.000 0.000 -27.815
Traceless
 xyz
x 6.399 2.403 0.000
y 2.403 -11.119 0.000
z 0.000 0.000 4.720
Polar
3z2-r29.440
x2-y211.679
xy2.403
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.761 -0.309 0.000
y -0.309 8.093 0.000
z 0.000 0.000 4.732


<r2> (average value of r2) Å2
<r2> 113.939
(<r2>)1/2 10.674