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Name	1H-Benzimidazole,2,2'-(2,6-pyridinediyl)bis-	EINECS	624-875-9
CAS No.	28020-73-7	Density	1.386 g/cm³
PSA	70.25000	LogP	4.16820
Solubility	N/A	Melting Point	>300 °C(lit.)
Formula	C₁₉H₁₃N₅	Boiling Point	664 °C at 760 mmHg
Molecular Weight	311.346	Flash Point	311.4 °C
Transport Information	N/A	Appearance	N/A
Safety	26-37/39	Risk Codes	36/37/38
Molecular Structure		Hazard Symbols	Xi
Synonyms	Benzimidazole,2,2'-(2,6-pyridinediyl)bis- (8CI);2,6-Bis(benzimidazol-2-yl)pyridine;2,6-Bis(benzimidazol-2'-yl)pyridine;2,2'-Pyridine-2,6-diylbis(1H-benzimidazole);	Article Data	44

1H-Benzimidazole,2,2'-(2,6-pyridinediyl)bis- Synthetic route

: 499-83-2
Pyridine-2,6-dicarboxylic acid

: 95-54-5
1,2-diamino-benzene

: 28020-73-7
2,6-bis(benzimidazole-2'-yl)pyridine

Conditions

Conditions	Yield
With phosphoric acid at 220℃; for 4h;	96%
With polyphosphoric acid at 200℃; for 6h;	95%
With phosphoric acid at 220℃; for 5h;	92%

: 2,6-bis{[(2-aminophenyl)imino]methyl}pyridine

: 28020-73-7
2,6-bis(benzimidazole-2'-yl)pyridine

Conditions

Conditions	Yield
With iodine In methanol; dichloromethane for 5h;	94%

: Cu(OAc)2*2,6-bis(benzoimidazolyl)pyridine

: 28020-73-7
2,6-bis(benzimidazole-2'-yl)pyridine

Conditions

Conditions	Yield
With sodium sulfide In methanol for 0.5h;	85%

: [Cu(2,6-bis(1H-benzo[d]imidazol-2-yl)pyridine)(H2O)2](SO3CF3)2

: 28020-73-7
2,6-bis(benzimidazole-2'-yl)pyridine

Conditions

Conditions	Yield
With L-Cysteine In aq. buffer at 25℃; for 1h; pH=7.34; Concentration; Time; Inert atmosphere;

: 28020-73-7
2,6-bis(benzimidazole-2'-yl)pyridine

: UO2Cl2(THF)3

: [UO2(H2BBP)Cl2]

Conditions

Conditions	Yield
With pyridine for 1h; Inert atmosphere;	98%

: 28020-73-7
2,6-bis(benzimidazole-2'-yl)pyridine

: 866604-68-4
2,6-bis(5-nitro-1H-benzo[d]imidazol-2-yl)pyridine

Conditions

Conditions	Yield
With sulfuric acid; nitric acid for 4h; Cooling with ice;	97%

: ferrous(II) sulfate heptahydrate

: 28020-73-7
2,6-bis(benzimidazole-2'-yl)pyridine

: ammonium hexafluorosilicate

: iron (II) hexafluorosilicate

Conditions

Conditions	Yield
With ascorbic acid In ethanol	96%

: 28020-73-7
2,6-bis(benzimidazole-2'-yl)pyridine

: 63075-66-1
diethyl (4-bromobutyl)phosphonate

: 2,6-bis(1-(4-diethylphosphonyl)butylbenzimidazol-2-yl)pyridine

Conditions

Conditions	Yield
With sodium hydride In N,N-dimethyl-formamide at 100℃; for 10h;	95%

: 28020-73-7
2,6-bis(benzimidazole-2'-yl)pyridine

: AuCl4H4(1-)*K(1+)

: C19H11AuClN5(1+)

Conditions

Conditions	Yield
With sodium acetate In methanol for 2h; Reflux;	95%

: 28020-73-7
2,6-bis(benzimidazole-2'-yl)pyridine

: potassium tetrachloroaurate(III)

: 7732-18-5
water

: 1431846-31-9
C19H11AuClN5*H2O

Conditions

Conditions	Yield
With sodium acetate In methanol for 2h; Reflux;	95%

1H-Benzimidazole,2,2'-(2,6-pyridinediyl)bis- Specification

The 1H-Benzimidazole,2,2'-(2,6-pyridinediyl)bis-, with the CAS registry number 28020-73-7, is also known as 2,6-Bis(benzimidazol-2-yl)pyridine. It belongs to the product categories of C₉ to C₄₆; Heterocyclic Building Blocks; Pyridines. This chemical's molecular formula is C₁₉H₁₃N₅ and molecular weight is 311.34. What's more, its systematic name is 2,2'-pyridine-2,6-diylbis(1H-benzimidazole). It should be sealed and stored in a cool and dry place.

Physical properties of 1H-Benzimidazole,2,2'-(2,6-pyridinediyl)bis- are: (1)ACD/LogP: 3.06; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 2.97; (4)ACD/LogD (pH 7.4): 3.06; (5)ACD/BCF (pH 5.5): 101.76; (6)ACD/BCF (pH 7.4): 123.74; (7)ACD/KOC (pH 5.5): 899.77; (8)ACD/KOC (pH 7.4): 1094.13; (9)#H bond acceptors: 5; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 2; (12)Polar Surface Area: 48.53 Å²; (13)Index of Refraction: 1.78; (14)Molar Refractivity: 94.26 cm³; (15)Molar Volume: 224.5 cm³; (16)Polarizability: 37.36×10^-24cm³; (17)Surface Tension: 76.1 dyne/cm; (18)Density: 1.386 g/cm³; (19)Flash Point: 311.4 °C; (20)Enthalpy of Vaporization: 97.66 kJ/mol; (21)Boiling Point: 664 °C at 760 mmHg; (22)Vapour Pressure: 1.68E-17 mmHg at 25°C.

Preparation of 1H-Benzimidazole,2,2'-(2,6-pyridinediyl)bis-: this chemical can be prepared by pyridine-2,6-dicarboxylic acid and benzene-1,2-diamine at the temperature of 230 °C. This reaction will need reagent phosphoric acid with the reaction time of 4 hours The yield is about 53%.

1H-Benzimidazole,2,2'-(2,6-pyridinediyl)bis- can be prepared by pyridine-2,6-dicarboxylic acid and benzene-1,2-diamine at the ambient temperature

When you are using this chemical, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective clothing and gloves.

You can still convert the following datas into molecular structure:
(1)SMILES: n1c5ccccc5nc1c4nc(c3nc2ccccc2n3)ccc4
(2)InChI: InChI=1S/C19H13N5/c1-2-7-13-12(6-1)21-18(22-13)16-10-5-11-17(20-16)19-23-14-8-3-4-9-15(14)24-19/h1-11H,(H,21,22)(H,23,24)
(3)InChIKey: JBKICBDXAZNSKA-UHFFFAOYSA-N

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