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PDBeChem : Chemical Bonds
Molecule :
HEC
Bonds between two atoms of the molecule
Total Number of Bonds: 84
50
10 per page
20 per page
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Record
First Atom
Second Atom
First Element
Second Element
Bond Order Type
Bond Length
Bond Stereochemistry
Is Aromatic
1
FE
NA
FE
N
sing
N
N
2
FE
NB
FE
N
sing
N
N
3
FE
NC
FE
N
sing
N
N
4
FE
ND
FE
N
sing
N
N
5
CHA
C1A
C
C
doub
N
N
6
CHA
C4D
C
C
sing
N
N
7
CHA
HHA
C
H
sing
N
N
8
CHB
C4A
C
C
doub
N
N
9
CHB
C1B
C
C
sing
N
N
10
CHB
HHB
C
H
sing
N
N
11
CHC
C4B
C
C
doub
N
N
12
CHC
C1C
C
C
sing
N
N
13
CHC
HHC
C
H
sing
N
N
14
CHD
C4C
C
C
doub
N
N
15
CHD
C1D
C
C
sing
N
N
16
CHD
HHD
C
H
sing
N
N
17
NA
C1A
N
C
sing
N
Y
18
NA
C4A
N
C
sing
N
Y
19
C1A
C2A
C
C
sing
N
Y
20
C2A
C3A
C
C
doub
N
Y
21
C2A
CAA
C
C
sing
N
N
22
C3A
C4A
C
C
sing
N
Y
23
C3A
CMA
C
C
sing
N
N
24
CMA
HMA1
C
H
sing
N
N
25
CMA
HMA2
C
H
sing
N
N
26
CMA
HMA3
C
H
sing
N
N
27
CAA
CBA
C
C
sing
N
N
28
CAA
HAA1
C
H
sing
N
N
29
CAA
HAA2
C
H
sing
N
N
30
CBA
CGA
C
C
sing
N
N
31
CBA
HBA1
C
H
sing
N
N
32
CBA
HBA2
C
H
sing
N
N
33
CGA
O1A
C
O
doub
N
N
34
CGA
O2A
C
O
sing
N
N
35
O2A
H2A
O
H
sing
N
N
36
NB
C1B
N
C
sing
N
Y
37
NB
C4B
N
C
sing
N
Y
38
C1B
C2B
C
C
doub
N
Y
39
C2B
C3B
C
C
sing
N
Y
40
C2B
CMB
C
C
sing
N
N
41
C3B
C4B
C
C
sing
N
Y
42
C3B
CAB
C
C
doub
E
N
43
CMB
HMB1
C
H
sing
N
N
44
CMB
HMB2
C
H
sing
N
N
45
CMB
HMB3
C
H
sing
N
N
46
CAB
CBB
C
C
sing
N
N
47
CAB
HAB
C
H
sing
N
N
48
CBB
HBB1
C
H
sing
N
N
49
CBB
HBB2
C
H
sing
N
N
50
CBB
HBB3
C
H
sing
N
N
51
NC
C1C
N
C
sing
N
Y
52
NC
C4C
N
C
sing
N
Y
53
C1C
C2C
C
C
doub
N
Y
54
C2C
C3C
C
C
sing
N
Y
55
C2C
CMC
C
C
sing
N
N
56
C3C
C4C
C
C
sing
N
Y
57
C3C
CAC
C
C
doub
E
N
58
CMC
HMC1
C
H
sing
N
N
59
CMC
HMC2
C
H
sing
N
N
60
CMC
HMC3
C
H
sing
N
N
61
CAC
CBC
C
C
sing
N
N
62
CAC
HAC
C
H
sing
N
N
63
CBC
HBC1
C
H
sing
N
N
64
CBC
HBC2
C
H
sing
N
N
65
CBC
HBC3
C
H
sing
N
N
66
ND
C1D
N
C
sing
N
Y
67
ND
C4D
N
C
sing
N
Y
68
C1D
C2D
C
C
doub
N
Y
69
C2D
C3D
C
C
sing
N
Y
70
C2D
CMD
C
C
sing
N
N
71
C3D
C4D
C
C
doub
N
Y
72
C3D
CAD
C
C
sing
N
N
73
CMD
HMD1
C
H
sing
N
N
74
CMD
HMD2
C
H
sing
N
N
75
CMD
HMD3
C
H
sing
N
N
76
CAD
CBD
C
C
sing
N
N
77
CAD
HAD1
C
H
sing
N
N
78
CAD
HAD2
C
H
sing
N
N
79
CBD
CGD
C
C
sing
N
N
80
CBD
HBD1
C
H
sing
N
N
81
CBD
HBD2
C
H
sing
N
N
82
CGD
O1D
C
O
doub
N
N
83
CGD
O2D
C
O
sing
N
N
84
O2D
H2D
O
H
sing
N
N