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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: mPW1PW91/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/cc-pVDZ
 hartrees
Energy at 0K-224.929508
Energy at 298.15K-224.931215
Nuclear repulsion energy124.748026
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-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 A1 3083 2955 0.85      
2 A1 2414 2313 0.93      
3 A1 1417 1358 15.15      
4 A1 922 883 4.60      
5 A1 591 566 0.21      
6 A1 148 142 9.48      
7 A2 1230 1179 0.00      
8 A2 381 365 0.00      
9 B1 3134 3004 4.93      
10 B1 924 886 0.67      
11 B1 346 331 0.08      
12 B2 2411 2310 2.88      
13 B2 1334 1278 4.39      
14 B2 1013 971 5.40      
15 B2 380 364 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 9863.3 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 9452.0 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-pVDZ
ABC
0.70140 0.09763 0.08711

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.833
C2 0.000 1.219 0.026
C3 0.000 -1.219 0.026
H4 0.886 0.000 1.486
H5 -0.886 0.000 1.486
N6 0.000 2.199 -0.591
N7 0.000 -2.199 -0.591

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46241.46241.10091.10092.61982.6198
C21.46242.43862.09882.09881.15753.4733
C31.46242.43862.09882.09883.47331.1575
H41.10092.09882.09881.77293.15203.1520
H51.10092.09882.09881.77293.15203.1520
N62.61981.15753.47333.15203.15204.3976
N72.61983.47331.15753.15203.15204.3976

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.684 C1 C3 N7 178.684
C2 C1 C3 112.972 C2 C1 H4 109.113
C2 C1 H5 109.113 C3 C1 H4 109.113
C3 C1 H5 109.113 H4 C1 H5 107.256
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.023      
2 C -0.039      
3 C -0.039      
4 H 0.141      
5 H 0.141      
6 N -0.114      
7 N -0.114      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 3.669 3.669
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.408 0.000 0.000
y 0.000 -41.098 0.000
z 0.000 0.000 -26.277
Traceless
 xyz
x 7.279 0.000 0.000
y 0.000 -14.755 0.000
z 0.000 0.000 7.476
Polar
3z2-r214.952
x2-y214.689
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.464 0.000 0.000
y 0.000 7.251 0.000
z 0.000 0.000 4.720


<r2> (average value of r2) Å2
<r2> 119.386
(<r2>)1/2 10.926