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All results from a given calculation for HCOOHH2O (Formic acid water dimer)

using model chemistry: B3LYPultrafine_cp_opt/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYPultrafine_cp_opt/6-31+G**
 hartrees
Energy at 0K-266.225250
Energy at 298.15K-266.230038
Nuclear repulsion energy9.065941
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 B3LYPultrafine_cp_opt/6-31+G**
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 3893 3753 101.69      
2 A 3675 3542 208.27      
3 A 3368 3246 599.57      
4 A 3089 2978 70.56      
5 A 1778 1714 363.03      
6 A 1606 1548 165.49      
7 A 1441 1389 1.50      
8 A 1382 1332 18.76      
9 A 1220 1176 234.20      
10 A 1064 1026 9.83      
11 A 913 880 158.10      
12 A 691 666 48.15      
13 A 593 571 192.48      
14 A 371 358 96.79      
15 A 252 243 131.68      
16 A 204 197 25.41      
17 A 188 181 55.00      
18 A 170 164 12.87      

Unscaled Zero Point Vibrational Energy (zpe) 12948.8 cm-1
Scaled (by 0.964) Zero Point Vibrational Energy (zpe) 12482.7 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 B3LYPultrafine_cp_opt/6-31+G**
ABC
0.39077 0.16382 0.11608

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine_cp_opt/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.393 0.978 0.000
O2 -0.587 1.134 0.007
O3 1.905 0.006 -0.084
C4 -1.210 -0.041 0.008
O5 -0.669 -1.133 0.004
H6 -2.300 0.091 0.014
H7 2.619 -0.077 0.559
H8 1.358 -0.800 -0.029

Atom - Atom Distances (Å)
  H1 O2 O3 C4 O5 H6 H7 H8
H10.99251.79971.89962.36332.83552.52602.0239
O20.99252.73711.32982.26862.00543.47152.7437
O31.79972.73713.11632.81544.20680.96480.9753
C41.89961.32983.11631.21891.09823.86832.6783
O52.36332.26862.81541.21892.03973.49712.0543
H62.83552.00544.20681.09822.03974.95173.7656
H72.52603.47150.96483.86833.49714.95171.5677
H82.02392.74370.97532.67832.05433.76561.5677

picture of Formic acid water dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 C4 108.894 H1 O3 H7 129.545
H1 O3 H8 88.470 O2 H1 O3 156.159
O2 C4 O5 125.719 O2 C4 H6 111.008
O5 C4 H6 123.273 H7 O3 H8 107.807
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine_cp_opt/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.717      
4 C 0.000      
5 O 0.000      
6 H 0.000      
7 H 0.359      
8 H 0.359      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.743 0.148 1.275 1.483
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.333 -1.702 3.730
y -1.702 -28.439 -0.086
z 3.730 -0.086 -24.119
Traceless
 xyz
x 8.946 -1.702 3.730
y -1.702 -7.712 -0.086
z 3.730 -0.086 -1.234
Polar
3z2-r2-2.467
x2-y211.106
xy-1.702
xz3.730
yz-0.086


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.112 0.082 0.053
y 0.082 1.032 0.042
z 0.053 0.042 1.007


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000