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All results from a given calculation for C4H4N2 (Succinonitrile)

using model chemistry: BLYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at BLYP/3-21G
 hartrees
Energy at 0K-262.764375
Energy at 298.15K-262.768452
Nuclear repulsion energy176.832399
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 BLYP/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 2993 2977 0.00      
2 Ag 2251 2239 0.00      
3 Ag 1495 1487 0.00      
4 Ag 1353 1346 0.00      
5 Ag 961 955 0.00      
6 Ag 947 942 0.00      
7 Ag 523 520 0.00      
8 Ag 251 250 0.00      
9 Au 3045 3028 1.73      
10 Au 1247 1240 0.01      
11 Au 774 770 3.42      
12 Au 464 461 1.03      
13 Au 82 82 16.05      
14 Bg 3024 3007 0.00      
15 Bg 1327 1320 0.00      
16 Bg 1043 1037 0.00      
17 Bg 428 425 0.00      
18 Bu 3003 2986 4.42      
19 Bu 2254 2241 0.80      
20 Bu 1497 1489 18.64      
21 Bu 1304 1297 1.57      
22 Bu 903 898 3.46      
23 Bu 569 566 5.63      
24 Bu 144 143 15.36      

Unscaled Zero Point Vibrational Energy (zpe) 15940.2 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 15852.5 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 BLYP/3-21G
ABC
0.83453 0.04830 0.04646

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.789 0.000
C2 0.000 -0.789 0.000
C3 -1.370 1.315 0.000
C4 1.370 -1.315 0.000
N5 2.470 -1.732 0.000
N6 -2.470 1.732 0.000
H7 0.536 1.154 0.892
H8 0.536 1.154 -0.892
H9 -0.536 -1.154 0.892
H10 -0.536 -1.154 -0.892

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C11.57851.46712.51073.52912.64331.10311.10312.20442.2044
C21.57852.51071.46712.64333.52912.20442.20441.10311.1031
C31.46712.51073.79754.90141.17622.11082.11082.75422.7542
C42.51071.46713.79751.17624.90142.75422.75422.11082.1108
N53.52912.64334.90141.17626.03263.58623.58623.18843.1884
N62.64333.52911.17624.90146.03263.18843.18843.58623.5862
H71.10312.20442.11082.75423.58623.18841.78452.54493.1082
H81.10312.20442.11082.75423.58623.18841.78453.10822.5449
H92.20441.10312.75422.11083.18843.58622.54493.10821.7845
H102.20441.10312.75422.11083.18843.58623.10822.54491.7845

picture of Succinonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 110.996 C1 C2 H9 109.302
C1 C2 H10 109.302 C1 C3 N6 179.770
C2 C1 C3 110.996 C2 C1 H7 109.302
C2 C1 H8 109.302 C2 C4 N5 179.770
C3 C1 H7 109.607 C3 C1 H8 109.607
C4 C2 H9 109.607 C4 C2 H10 109.607
H7 C1 H8 107.969 H9 C2 H10 107.969
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.405      
2 C -0.405      
3 C 0.345      
4 C 0.345      
5 N -0.452      
6 N -0.452      
7 H 0.256      
8 H 0.256      
9 H 0.256      
10 H 0.256      


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 -51.524 12.061 0.000
y 12.061 -39.132 0.000
z 0.000 0.000 -32.752
Traceless
 xyz
x -15.583 12.061 0.000
y 12.061 3.006 0.000
z 0.000 0.000 12.576
Polar
3z2-r225.153
x2-y2-12.392
xy12.061
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 213.465
(<r2>)1/2 14.610