This chemical is called Biphenylene, and its CAS registry number is 259-79-0. With the molecular formula of C₁₂H₈, its molecular weight is 152.19. Additionally, its product categories are Biphenyl derivatives; Biphenyl & Diphenyl ether. Generally, Biphenylene is probably best known as the dimer of benzyne.  

Other characteristics of the Biphenylene can be summarised as followings: (1)ACD/LogP: 3.82; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 3.82; (4)ACD/LogD (pH 7.4): 3.82; (5)ACD/BCF (pH 5.5): 470.799; (6)ACD/BCF (pH 7.4): 470.799; (7)ACD/KOC (pH 5.5): 2849.83; (8)ACD/KOC (pH 7.4): 2849.83; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 0 Å²; (13)Index of Refraction: 1.799; (14)Molar Refractivity: 54.622 cm³; (15)Molar Volume: 127.862 cm³; (16)Polarizability: 21.654×10^-24cm³; (17)Surface Tension: 53.531 dyne/cm; (18)Density: 1.19 g/cm³; (19)Flash Point: 99.575 °C; (20)Enthalpy of Vaporization: 48.002 kJ/mol; (21)Boiling Point: 262.417 °C at 760 mmHg; (22)Vapour Pressure: 0.018 mmHg at 25°C.

Production method of this chemical: The Biphenylene could be obtained by the reactant of 2,3-bis(trimethylsilyl)-Biphenylene. This reaction needs the reagent of trifluoroacetic acid, and the solvent of CH₂Cl₂. The yield is 73 %. In addition, this reaction should be taken for 1 hour.

Uses of this chemical: The 2-bromo-Biphenylene could be obtained by the reactant of Biphenylene. This reaction needs the reagent of CCl₄, pyridine, bromine.

When you are using this chemical, please be cautious about it as the following: This chemical is toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. Avoid releasing to the environment and contacting with skin and eyes. Refer to special instructions / safety data sheets.

You can still convert the following datas into molecular structure:
1.SMILES: c1ccc-2c(c1)-c3c2cccc3
2.InChI: InChI=1/C12H8/c1-2-6-10-9(5-1)11-7-3-4-8-12(10)11/h1-8H
3.InChIKey: IFVTZJHWGZSXFD-UHFFFAOYAR