The Piperazine,1-[bis(4-chlorophenyl)methyl]-, with the CAS registry number 27469-61-0, is also known as 4-[Bis(4-chlorophenyl)methyl]piperazine. This chemical's molecular formula is C₁₇H₁₈Cl₂N₂ and molecular weight is 321.24. What's more, its systematic name is 1-[bis(4-chlorophenyl)methyl]piperazine. 

Physical properties of Piperazine,1-[bis(4-chlorophenyl)methyl]- are: (1)ACD/LogP: 4.04; (2)# of Rule of 5 Violations: 0; (3)#H bond acceptors: 2; (4)#H bond donors: 1; (5)#Freely Rotating Bonds: 3; (6)Polar Surface Area: 6.48 Å²; (7)Index of Refraction: 1.599; (8)Molar Refractivity: 88.71 cm³; (9)Molar Volume: 259.5 cm³; (10)Surface Tension: 45.7 dyne/cm; (11)Density: 1.237 g/cm³; (12)Flash Point: 211.1 °C; (13)Enthalpy of Vaporization: 68.01 kJ/mol; (14)Boiling Point: 425.4 °C at 760 mmHg; (15)Vapour Pressure: 1.91E-07 mmHg at 25°C.

Preparation: this chemical can be prepared by 4,4'-dichloro-benzhydryl chloride, piperazine by heating. This reaction will need solvent acetonitrile with the reaction time of 2 hours. The yield is about 60%.

Uses of Piperazine,1-[bis(4-chlorophenyl)methyl]-: it can be used to produce 1-[bis-(4-chloro-phenyl)-methyl]-4-(3-thiophen-2-yl-prop-2-ynyl)-piperazine by heating. It will need solvent tetrahydrofuran with the reaction time of 345 min. This reaction will also need catalyst anhydrous CuSO₄. The yield is about 95%.

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, gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)SMILES: Clc1ccc(cc1)C(c2ccc(Cl)cc2)N3CCNCC3
(2)InChI: InChI=1S/C17H18Cl2N2/c18-15-5-1-13(2-6-15)17(21-11-9-20-10-12-21)14-3-7-16(19)8-4-14/h1-8,17,20H,9-12H2
(3)InChIKey: PTLFMGDNZYQISN-UHFFFAOYSA-N