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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: B2PLYP=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 B2PLYP=FULL/cc-pVDZ
 hartrees
Energy at 0K-187.855643
Energy at 298.15K-187.859642
HF Energy-187.656792
Nuclear repulsion energy101.258859
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 B2PLYP=FULL/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 A 3603 3453 14.11      
2 A 3516 3370 2.82      
3 A 2371 2273 0.15      
4 A 1645 1577 9.75      
5 A 1220 1169 0.13      
6 A 823 789 6.63      
7 A 661 634 98.04      
8 A 383 368 1.58      
9 A 364 349 30.26      
10 A 190 182 17.83      
11 B 3603 3453 13.42      
12 B 3519 3373 4.80      
13 B 1644 1576 15.70      
14 B 1368 1312 89.52      
15 B 1220 1169 0.10      
16 B 724 694 322.06      
17 B 384 368 16.34      
18 B 191 183 19.74      

Unscaled Zero Point Vibrational Energy (zpe) 13714.5 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 13145.3 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 B2PLYP=FULL/cc-pVDZ
ABC
4.99718 0.11796 0.11794

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.005 0.612 0.043
C2 -0.005 -0.612 0.043
N3 -0.005 1.968 -0.082
N4 0.005 -1.968 -0.082
H5 -0.319 2.462 0.748
H6 0.863 2.362 -0.433
H7 0.319 -2.462 0.748
H8 -0.863 -2.362 -0.433

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.22341.36162.58222.00612.00653.16893.1338
C21.22342.58221.36163.16893.13382.00612.0065
N31.36162.58223.93511.01541.01574.51784.4276
N42.58221.36163.93514.51784.42761.01541.0157
H52.00613.16891.01544.51781.67374.96464.9956
H62.00653.13381.01574.42761.67374.99565.0292
H73.16892.00614.51781.01544.96464.99561.6737
H83.13382.00654.42761.01574.99565.02921.6737

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 174.698 C1 N3 H5 114.340
C1 N3 H6 114.355 C2 C1 N3 174.698
C2 N4 H7 114.340 C2 N4 H8 114.355
H5 N3 H6 110.986 H7 N4 H8 110.986
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability