5H-Cyclopenta[2,1-b:3,4-b']dipyridin-5-one

Modify Date: 2025-08-25 14:04:31

5H-Cyclopenta[2,1-b:3,4-b']dipyridin-5-one Structure
5H-Cyclopenta[2,1-b:3,4-b']dipyridin-5-one structure
 Common Name 5H-Cyclopenta[2,1-b:3,4-b']dipyridin-5-one
CAS Number 50890-67-0 Molecular Weight 182.178
Density 1.4±0.1 g/cm3 Boiling Point 396.3±17.0 °C at 760 mmHg
Molecular Formula C11H6N2O Melting Point 214-217ºC(lit.)
MSDS Chinese USA Flash Point 196.1±27.4 °C
Symbol GHS07
GHS07		 Signal Word Warning

 Names

Name 4,5-Diazafluoren-9-one
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.4±0.1 g/cm3
Boiling Point 396.3±17.0 °C at 760 mmHg
Melting Point 214-217ºC(lit.)
Molecular Formula C11H6N2O
Molecular Weight 182.178
Flash Point 196.1±27.4 °C
Exact Mass 182.048019
PSA 42.85000
LogP 0.98
Vapour Pressure 0.0±0.9 mmHg at 25°C
Index of Refraction 1.689
Water Solubility Soluble in dichloromethane, tetrahydrofuran, chloroform, benzene, toluene and polar organic solvents. Insoluble in diethyl ether and alkanes.

 Safety Information

Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H315-H319-H335
Precautionary Statements P261-P305 + P351 + P338
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes Xi
Risk Phrases R36/37/38
Safety Phrases 26-37/39
RIDADR NONH for all modes of transport
WGK Germany 3
HS Code 2933399090

 Synthetic Route

1,10-Phenanthroline structure

1,10-Phenanthroline

CAS#:66-71-7

~56%

5H-Cyclopenta[2,1-b:3,4-b']dipyridin-5-one Structure

5H-Cyclopenta[2...

CAS#:50890-67-0

Literature: Keshtov; Pozin; Marochkin; Perevalov; Petrovskii; Blagodatskikh; Khokhlov Doklady Chemistry, 2012 , vol. 442, # 2 p. 50 - 56
5-Nitro-1,10-phenanthroline structure

5-Nitro-1,10-ph...

CAS#:4199-88-6

~61%

5H-Cyclopenta[2,1-b:3,4-b']dipyridin-5-one Structure

5H-Cyclopenta[2...

CAS#:50890-67-0

Literature: Gillard, R. D.; Houghton, Roy P.; Tucker, John N. Journal of the Chemical Society, Dalton Transactions: Inorganic Chemistry (1972-1999), 1980 , p. 2102 - 2107
1,10-Phenanthroline-5,6-dione structure

1,10-Phenanthro...

CAS#:27318-90-7

~65%

5H-Cyclopenta[2,1-b:3,4-b']dipyridin-5-one Structure

5H-Cyclopenta[2...

CAS#:50890-67-0

Literature: Ferreira, Sabrina B.; Kaiser, Carlos R.; Ferreira, Vitor F. Synlett, 2008 , # 17 p. 2625 - 2628
1,10-Phenanthroline structure

1,10-Phenanthroline

CAS#:66-71-7

~20%

5H-Cyclopenta[2,1-b:3,4-b']dipyridin-5-one Structure

5H-Cyclopenta[2...

CAS#:50890-67-0

2,2′-Bipyridine-3,3′−dicarboxylic acid structure

2,2′-Bipyridine...

CAS#:4433-01-6

N/A structure

N/A

CAS#:143825-63-2

Literature: Baxter, Paul N. W.; Connor, Joseph A.; Wallis, John D.; Povey, David C.; Powell, Anne K. Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1992 , # 13 p. 1601 - 1606
6-keto-5-oxim-1,10-phenanthroline sodium salt structure

6-keto-5-oxim-1...

CAS#:75899-33-1

~%

5H-Cyclopenta[2,1-b:3,4-b']dipyridin-5-one Structure

5H-Cyclopenta[2...

CAS#:50890-67-0

6-keto-5-oxim-1,10-phenanthroline structure

6-keto-5-oxim-1...

CAS#:58443-38-2

Literature: Gillard, R. D.; Houghton, Roy P.; Tucker, John N. Journal of the Chemical Society, Dalton Transactions: Inorganic Chemistry (1972-1999), 1980 , p. 2102 - 2107
1,10-Phenanthroline structure

1,10-Phenanthroline

CAS#:66-71-7

Sulfuric acid structure

Sulfuric acid

CAS#:7664-93-9

Sulfur trioxide structure

Sulfur trioxide

CAS#:7446-11-9

nitric acid structure

nitric acid

CAS#:7697-37-2

~%

Detail
Literature: Inglett; Smith Journal of the American Chemical Society, 1950 , vol. 72, p. 842

 Customs

HS Code 2933399090
Summary 2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Articles9

More Articles
Preparation, Purification, and Characterization of Binuclear Ruthenium(II) Complexes: Bridging Ligands Based on Diazafluorenes.

Inorg. Chem. 37(9) , 2227-2234, (1998)

A series of bimetallic complexes of ruthenium(II) bridged by heterocyclic ligands formed by the condensation of 4,5-diazafluoren-9-one with various diamines, hydrazine, 1,4-phenylenediamine, benzidine...

Photoinduced energy-and electron-transfer processes in dinuclear ruthenium (II) and/or osmium (II) complexes connected by a linear rigid bis-chelating bridge. De Cola L, et al.

Rec. Trav. Chim. 114(11-12) , 534-541., (1995)

4, 5-Diazafluoren-9-one. Fun HK, et al.

Acta Crystallogr. C 51(10) , 2076-2078, (1995)

 Synonyms

5H-Cyclopenta[2,1-b:3,4-b']dipyridin-5-one
5H-Cyclopenta[1,2-b:5,4-b']dipyridin-5-one
4,5-DIAZAFLUOREN-9-ONE
MFCD00046892
5H-Pyrido[3',2':4,5]cyclopenta[1,2-b]pyridin-5-one
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Chemsrc provides CAS#:50890-67-0 MSDS, density, melting point, boiling point, structure, etc. Its name is 5H-Cyclopenta[2,1-b:3,4-b']dipyridin-5-one>> amp version: 5H-Cyclopenta[2,1-b:3,4-b']dipyridin-5-one

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