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All results from a given calculation for C4H4N2 (Succinonitrile)

using model chemistry: mPW1PW91/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-264.260773
Energy at 298.15K-264.264657
Nuclear repulsion energy179.011918
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/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3091 2962 0.00      
2 Ag 2382 2283 0.00      
3 Ag 1448 1388 0.00      
4 Ag 1374 1317 0.00      
5 Ag 1053 1009 0.00      
6 Ag 981 940 0.00      
7 Ag 520 498 0.00      
8 Ag 222 213 0.00      
9 Au 3156 3025 0.05      
10 Au 1198 1148 0.00      
11 Au 762 730 3.16      
12 Au 396 380 0.21      
13 Au 77 73 23.06      
14 Bg 3137 3006 0.00      
15 Bg 1304 1249 0.00      
16 Bg 1022 980 0.00      
17 Bg 361 346 0.00      
18 Bu 3100 2971 1.40      
19 Bu 2384 2284 14.42      
20 Bu 1455 1394 16.98      
21 Bu 1269 1217 2.61      
22 Bu 954 914 3.73      
23 Bu 527 505 0.91      
24 Bu 130 125 24.17      

Unscaled Zero Point Vibrational Energy (zpe) 16150.9 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 15477.4 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 mPW1PW91/aug-cc-pVDZ
ABC
0.85596 0.04951 0.04763

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.423 0.643 0.000
C2 -0.423 -0.643 0.000
C3 -0.423 1.832 0.000
C4 0.423 -1.832 0.000
N5 1.112 -2.763 0.000
N6 -1.112 2.763 0.000
H7 1.072 0.671 0.884
H8 1.072 0.671 -0.884
H9 -1.072 -0.671 0.884
H10 -1.072 -0.671 -0.884

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C11.53951.45932.47493.47472.61731.09671.09672.17792.1779
C21.53952.47491.45932.61733.47472.17792.17791.09671.0967
C31.45932.47493.76034.84431.15812.08902.08902.73262.7326
C42.47491.45933.76031.15814.84432.73262.73262.08902.0890
N53.47472.61734.84431.15815.95633.54583.54583.15073.1507
N62.61733.47471.15814.84435.95633.15073.15073.54583.5458
H71.09672.17792.08902.73263.54583.15071.76732.52973.0858
H81.09672.17792.08902.73263.54583.15071.76733.08582.5297
H92.17791.09672.73262.08903.15073.54582.52973.08581.7673
H102.17791.09672.73262.08903.15073.54583.08582.52971.7673

picture of Succinonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 111.217 C1 C2 H9 110.283
C1 C2 H10 110.283 C1 C3 N6 178.920
C2 C1 C3 111.217 C2 C1 H7 110.283
C2 C1 H8 110.283 C2 C4 N5 178.920
C3 C1 H7 108.802 C3 C1 H8 108.802
C4 C2 H9 108.802 C4 C2 H10 108.802
H7 C1 H8 107.352 H9 C2 H10 107.352
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.621      
2 C 0.621      
3 C -0.058      
4 C -0.058      
5 N -0.300      
6 N -0.300      
7 H -0.131      
8 H -0.131      
9 H -0.131      
10 H -0.131      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.636 11.886 0.000
y 11.886 -56.710 0.000
z 0.000 0.000 -33.055
Traceless
 xyz
x 7.247 11.886 0.000
y 11.886 -21.365 0.000
z 0.000 0.000 14.118
Polar
3z2-r228.236
x2-y219.075
xy11.886
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.776 -2.225 0.000
y -2.225 10.858 0.000
z 0.000 0.000 6.134


<r2> (average value of r2) Å2
<r2> 209.748
(<r2>)1/2 14.483