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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: B2PLYP=FULL/TZVP

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/TZVP
 hartrees
Energy at 0K-187.942033
Energy at 298.15K-187.945930
HF Energy-187.715999
Nuclear repulsion energy102.052271
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/TZVP
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 3651 3484 25.24      
2 A 3560 3397 2.50      
3 A 2365 2257 0.40      
4 A 1669 1593 11.14      
5 A 1206 1151 0.08      
6 A 823 786 3.21      
7 A 554 529 160.92      
8 A 408 390 13.14      
9 A 388 370 12.19      
10 A 177 169 22.90      
11 B 3651 3484 24.05      
12 B 3563 3400 12.23      
13 B 1670 1594 33.90      
14 B 1371 1309 115.40      
15 B 1206 1150 0.07      
16 B 610 582 335.15      
17 B 390 372 16.65      
18 B 178 170 24.21      

Unscaled Zero Point Vibrational Energy (zpe) 13720.3 cm-1
Scaled (by 0.9542) Zero Point Vibrational Energy (zpe) 13091.9 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/TZVP
ABC
5.24644 0.11964 0.11962

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 0.604 0.053
C2 -0.003 -0.604 0.053
N3 -0.003 1.954 -0.082
N4 0.003 -1.954 -0.082
H5 -0.346 2.468 0.716
H6 0.840 2.356 -0.461
H7 0.346 -2.468 0.716
H8 -0.840 -2.356 -0.461

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.20761.35702.56142.00882.00873.16083.1202
C21.20762.56141.35703.16083.12022.00882.0087
N31.35702.56143.90821.00851.00874.50654.4069
N42.56141.35703.90824.50654.40691.00851.0087
H52.00883.16081.00854.50651.67524.98344.9896
H62.00873.12021.00874.40691.67524.98965.0026
H73.16082.00884.50651.00854.98344.98961.6752
H83.12022.00874.40691.00874.98965.00261.6752

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 174.289 C1 N3 H5 115.467
C1 N3 H6 115.437 C2 C1 N3 174.289
C2 N4 H7 115.467 C2 N4 H8 115.437
H5 N3 H6 112.286 H7 N4 H8 112.286
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability