The Phosphine,diphenyl-2-propen-1-yl-, with the CAS registry number 2741-38-0, has the systematic name of diphenyl(prop-2-en-1-yl)phosphane. It is a  kind of air sensitive chemical, and belongs to the product category of Ligand. And the molecular formula of the chemical is C₁₅H₁₅P.

The characteristics of Phosphine,diphenyl-2-propen-1-yl- are as followings: (1)ACD/LogP: 5.15; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 5.15; (4)ACD/LogD (pH 7.4): 5.15; (5)ACD/BCF (pH 5.5): 4829.97; (6)ACD/BCF (pH 7.4): 4829.97; (7)ACD/KOC (pH 5.5): 15085.52; (8)ACD/KOC (pH 7.4): 15085.52; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 4; (12)Polar Surface Area: 13.59 Ų; (13)Flash Point: 152.5 °C; (14)Enthalpy of Vaporization: 56.1 kJ/mol; (15)Boiling Point: 340.6 °C at 760 mmHg; (16)Vapour Pressure: 0.000168 mmHg at 25°C.

Preparation of Phosphine,diphenyl-2-propen-1-yl-: This chemical can be prepared by diphenylphosphinous acid chloride and allylmagnesium bromide. The reaction will need menstruum diethyl ether. And the yield is about 64%.   

You should be cautious while dealing with this chemical. It irritates to eyes, respiratory system and skin. Therefore, you had better take the following instructions: Wear suitable protective clothing, gloves and eye/face protection, and if in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice; Take off immediately all contaminated clothing; After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer). 

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: C(=C)\CP(c1ccccc1)c2ccccc2
(2)InChI: InChI=1/C15H15P/c1-2-13-16(14-9-5-3-6-10-14)15-11-7-4-8-12-15/h2-12H,1,13H2
(3)InChIKey: PDDYFPPQDKRJTK-UHFFFAOYAP