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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: B1B95/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-31G
 hartrees
Energy at 0K-224.819099
Energy at 298.15K-224.820793
Nuclear repulsion energy124.319741
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 B1B95/6-31G
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 3074 2932 0.39      
2 A1 2361 2252 0.62      
3 A1 1491 1422 23.48      
4 A1 913 871 7.00      
5 A1 589 562 0.00      
6 A1 148 141 8.69      
7 A2 1275 1216 0.00      
8 A2 378 360 0.00      
9 B1 3119 2975 2.29      
10 B1 973 928 0.70      
11 B1 344 328 0.15      
12 B2 2358 2249 2.60      
13 B2 1381 1317 0.08      
14 B2 1020 973 10.05      
15 B2 369 352 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 9896.6 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 9438.4 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 B1B95/6-31G
ABC
0.69955 0.09694 0.08650

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.833
C2 0.000 1.220 0.028
C3 0.000 -1.220 0.028
H4 0.879 0.000 1.488
H5 -0.879 0.000 1.488
N6 0.000 2.208 -0.594
N7 0.000 -2.208 -0.594

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46141.46141.09641.09642.62902.6290
C21.46142.44062.09562.09561.16773.4848
C31.46142.44062.09562.09563.48481.1677
H41.09642.09562.09561.75793.15963.1596
H51.09642.09562.09561.75793.15963.1596
N62.62901.16773.48483.15963.15964.4169
N72.62903.48481.16773.15963.15964.4169

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.818 C1 C3 N7 178.818
C2 C1 C3 113.238 C2 C1 H4 109.201
C2 C1 H5 109.201 C3 C1 H4 109.201
C3 C1 H5 109.201 H4 C1 H5 106.584
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.379      
2 C 0.163      
3 C 0.163      
4 H 0.273      
5 H 0.273      
6 N -0.246      
7 N -0.246      


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 3.789 3.789
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.424 0.000 0.000
y 0.000 -42.337 0.000
z 0.000 0.000 -26.570
Traceless
 xyz
x 8.030 0.000 0.000
y 0.000 -15.840 0.000
z 0.000 0.000 7.810
Polar
3z2-r215.620
x2-y215.913
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.120 0.000 0.000
y 0.000 7.127 0.000
z 0.000 0.000 4.445


<r2> (average value of r2) Å2
<r2> 121.077
(<r2>)1/2 11.003