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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: CCSD=FULL/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CCSD=FULL/cc-pVDZ
 hartrees
Energy at 0K-188.768303
Energy at 298.15K 
HF Energy-188.105196
Nuclear repulsion energy116.729380
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 CCSD=FULL/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 A 3603 3603 0.41      
2 A 3509 3509 0.74      
3 A 3183 3183 0.01      
4 A 1794 1794 0.02      
5 A 1652 1652 22.13      
6 A 1338 1338 0.80      
7 A 1306 1306 0.15      
8 A 1063 1063 2.51      
9 A 949 949 74.71      
10 A 898 898 70.53      
11 A 554 554 0.39      
12 A 312 312 0.26      
13 A 255 255 14.73      
14 B 3603 3603 0.54      
15 B 3508 3508 0.41      
16 B 3183 3183 45.27      
17 B 1661 1661 32.94      
18 B 1403 1403 10.99      
19 B 1199 1199 64.71      
20 B 1146 1146 0.37      
21 B 865 865 364.40      
22 B 782 782 37.19      
23 B 339 339 34.39      
24 B 255 255 84.40      

Unscaled Zero Point Vibrational Energy (zpe) 19180.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19180.2 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 CCSD=FULL/cc-pVDZ
ABC
1.40478 0.13083 0.12172

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.316 0.596 0.025
C2 -0.316 -0.596 0.025
N3 -0.316 1.867 -0.113
N4 0.316 -1.867 -0.113
H5 1.414 0.637 0.024
H6 -1.414 -0.637 0.024
H7 -1.329 1.765 -0.023
H8 1.329 -1.765 -0.023
H9 -0.019 2.489 0.642
H10 0.019 -2.489 0.642

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34851.42652.46631.09872.12452.01862.56882.01953.1597
C21.34852.46631.42652.12451.09872.56882.01863.15972.0195
N31.42652.46633.78702.12682.73791.02183.98781.02244.4336
N42.46631.42653.78702.73792.12683.98781.02184.43361.0224
H51.09872.12452.12682.73793.10202.96572.40422.42153.4789
H62.12451.09872.73792.12683.10202.40422.96573.47892.4215
H72.01862.56881.02183.98782.96572.40424.41801.63774.5114
H82.56882.01863.98781.02182.40422.96574.41804.51141.6377
H92.01953.15971.02244.43362.42153.47891.63774.51144.9781
H103.15972.01954.43361.02243.47892.42154.51141.63774.9781

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.415 C1 C2 H6 120.143
C1 N3 H7 109.970 C1 N3 H9 110.015
C2 C1 N3 125.415 C2 C1 H5 120.143
C2 N4 H8 109.970 C2 N4 H10 110.015
N3 C1 H5 114.126 N4 C2 H6 114.126
H7 N3 H9 106.486 H8 N4 H10 106.486
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability