The Cyclobuta[1,2-b:4,3-b']dipyridine, with the CAS registry number 259-84-7, is also known as 1,8-Diazabiphenylene. It belongs to the product category of Biphenyl derivatives. This chemical's molecular formula is C₁₀H₆N₂ and molecular weight is 154.17. What's more, its systematic name is Cyclobuta[1,2-b:4,3-b']dipyridine. 

Physical properties about Cyclobuta[1,2-b:4,3-b']dipyridine are: (1)ACD/LogP: 1.04; (2)#of Rule of 5 Violations: 0; (3)#H bond acceptors: 2; (4)#H bond donors: 0; (5)#Freely Rotating Bonds: 0; (6)Polar Surface Area: 25.78 Å²; (7)Index of Refraction: 1.843; (8)Molar Refractivity: 50.8 cm³; (9)Molar Volume: 114.3 cm³; (10)Polarizability: 20.14×10^-24cm³; (11)Surface Tension: 73 dyne/cm; (12)Density: 1.348 g/cm³; (13)Flash Point: 128.2 °C; (14)Enthalpy of Vaporization: 50.88 kJ/mol; (15)Boiling Point: 290.6 °C at 760 mmHg; (16)Vapour Pressure: 0.00357 mmHg at 25 °C.

Uses of Cyclobuta[1,2-b:4,3-b']dipyridine: it is used to produce other chemicals. For example, it is used to produce 1H-[3,3']bipyridinyl-2-one.

The reaction occurs with reagent Aqueous Sodium Hydroxide. This reaction will occur at temperature of 150 °C for 2.5 hours. The yield is 96 %.

You can still convert the following datas into molecular structure:
(1) SMILES: n1cccc3c1c2ncccc23
(2) InChI: InChI=1/C10H6N2/c1-3-7-8-4-2-6-12-10(8)9(7)11-5-1/h1-6H
(3) InChIKey: DAEHFBVYBVCKNC-UHFFFAOYAD