This chemical is called Pentachlorobenzoyl chloride, and its CAS registry number is 1825-23-6. With the molecular formula of C₇Cl₆O, its molecular weight is 312.79.

Other characteristics of the Pentachlorobenzoyl chloride can be summarised as followings: (1)ACD/LogP: 4.32; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 4.32; (4)ACD/LogD (pH 7.4): 4.32; (5)ACD/BCF (pH 5.5): 1122.03; (6)ACD/BCF (pH 7.4): 1122.03; (7)ACD/KOC (pH 5.5): 5306.32; (8)ACD/KOC (pH 7.4): 5306.32; (9)#H bond acceptors: 1; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 1; (12)Polar Surface Area: 17.07 Å²; (13)Index of Refraction: 1.611; (14)Molar Refractivity: 60.97 cm³; (15)Molar Volume: 175.5 cm³; (16)Polarizability: 24.17×10^-24cm³; (17)Surface Tension: 51.5 dyne/cm; (18)Density: 1.781 g/cm³; (19)Flash Point: 141.5 °C; (20)Enthalpy of Vaporization: 57.85 kJ/mol; (21)Boiling Point: 335.4 °C at 760 mmHg; (22)Vapour Pressure: 0.00012 mmHg at 25°C.

Production method of this chemical: The Pentachlorobenzoyl chloride could be obtained by the reactant of pentachloro-benzoic acid. This reaction needs the reagent of SOCl₂. The yield is 61 %. In addition, this reaction should be taken for 48 hours. The other condition is heating.

You can still convert the following datas into molecular structure: 
1.SMILES: Clc1c(c(Cl)c(Cl)c(Cl)c1Cl)C(Cl)=O
2.InChI: InChI=1/C7Cl6O/c8-2-1(7(13)14)3(9)5(11)6(12)4(2)10
3.InChIKey: AAUSLOKBERXEER-UHFFFAOYAK