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All results from a given calculation for HCCOH (ethynol)

using model chemistry: mPW1PW91/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 mPW1PW91/cc-pVTZ
 hartrees
Energy at 0K-152.557424
Energy at 298.15K-152.558258
Nuclear repulsion energy58.495595
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 mPW1PW91/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' 3831 3675 117.62      
2 A' 3508 3365 98.84      
3 A' 2308 2213 151.07      
4 A' 1263 1211 90.08      
5 A' 1108 1063 97.31      
6 A' 659 632 49.95      
7 A' 413 396 12.48      
8 A" 554 532 64.68      
9 A" 454 436 4.67      

Unscaled Zero Point Vibrational Energy (zpe) 7048.8 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 6761.2 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 mPW1PW91/cc-pVTZ
ABC
22.67317 0.32822 0.32353

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.121 0.000
C2 0.091 1.313 0.000
O3 -0.175 -1.170 0.000
H4 0.178 2.370 0.000
H5 0.675 -1.619 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.19601.30232.25581.8660
C21.19602.49721.05992.9895
O31.30232.49723.55680.9618
H42.25581.05993.55684.0191
H51.86602.98950.96184.0191

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.685 C1 O3 H5 110.097
C2 C1 O3 176.648
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.111      
2 C -0.286      
3 O -0.188      
4 H 0.134      
5 H 0.228      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.461 -0.903 0.000 1.717
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.189 -2.474 0.000
y -2.474 -11.915 0.000
z 0.000 0.000 -18.622
Traceless
 xyz
x -1.920 -2.474 0.000
y -2.474 5.990 0.000
z 0.000 0.000 -4.070
Polar
3z2-r2-8.140
x2-y2-5.273
xy-2.474
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.558 0.055 0.000
y 0.055 5.730 0.000
z 0.000 0.000 2.416


<r2> (average value of r2) Å2
<r2> 40.335
(<r2>)1/2 6.351