( 527 ) 



XV. — On Benzyl Phosphines and their Derivatives. By Professor Letts and 

 E. F. Blake, Esq., Queen's College, Belfast. (With a Plate.) 



(Read 20th May 1889.) 



CONTENTS. 



Part I. — Benzyl Phosphines. 



Introduction, 

 Monobenzyl Phosphine- 



-Preparation, . 

 Properties of, 

 Hydriodate, . 

 Hydrobromate, 

 Hydrochlorate, 

 Platinum Salt, 

 Action of Oxygen on 

 Action of Bromine on the Pro- 

 ducts of the Oxidation of, . 

 Action of Sulphur on, 



,, Halogens on, . 



,, Bisulphide of Carbon 

 on, 



PAGE 



528 

 540 

 543 

 544 

 544 

 544 

 545 

 545 



547 

 549 

 550 



551 



Monobenzyl Phosphine- 



page. 



-Action of Sulphuric Acid on, . 553 



,, ,, Chloracetic Acid on, . 553 



,, ,, Bromacetic Acid on, . 554 

 ,, ,, Chlorocarbonic Ether 



on, . . . 554 



Hofmann's Dibenzyl Phosphine, 554 



Isolation of Tribenzyl Phosphine, &e. , from the Product 



of the Sealed Tube Reaction, ..... 559 



Action of Haloid Compounds of Benzyl on the Primary 



Phosphine, ........ 568 



Properties of Dibenzyl Phosphine, .... 573 



,, Tribenzyl ,, 574 



Salts of Tetrabenzyl Phosphonium, .... 574 



The Bye Products of Hofmann's Sealed Tube Reaction, 576 



Part II. — Action of Alcohols on a Mixture of Phosphorus and its Iodide. 



The Methods in Use for the Preparation of Phosphines, . 589 



Part III. — The Products of the 



PAGE 



Benzyl Phosphinous Acid — Preparation and Properties, 609 



Benzyl Phosphinite of Barium, 610 



Calcium, 610 



Magnesium, .... 610 



Zinc, 611 



Cadmium, ..... 611 



Lead, ...... 611 



Copper, ..... 611 



Action of Heat on the Acid 612 



Benzyl Phosphinic Acid — Preparation and Properties, . 612 

 Benzyl Phosphinate of Barium — Normal, . . . 614 

 ,, Acid, . . . .614 



Calcium (Normal), . . . 615 

 Magnesium ,, . . .615 



Zinc ,, ... 615 



Cadmium ,, . . .616 



Lead, 616 



Copper, 616 



Silver 616 



Potassium, . . . .616 



Sodium and Ammonium, . .617 



Action of a Moderate Heat on the Acid, . . . 617 



Strong „ „ .... 618 



,, Phosphorous Acid on the Acid, . . . 618 



,, Pentachloride of Phosphorus on the Acid, . 619 



Dibenzyl Phosphinic Acid — Preparation and Properties, 619 



Dibenzyl Phosphinate of Barium, 620 



,, Calcium 621 



VOL. XXXV. PART. II. (NO. 15). 



PAGE 



The Action of Benzyl Alcohol on a Mixture of Phos- 



)xidation of Benzyl Phosphines. 





• vvv 





PAGE 



Dibenzyl Phosphinate of Magnesium, 

 ,, Cadmium, 







. 621 



. 621 



Copper, . 



,, Silver, . 







. 621 

 . 622 



,, Sodium, . 







622 



, , Potassium, 







. 622 



,, Ammonium, 







. 622 



Action of Heat on the Acid, . 



. 





623 



,, Pentachloride of Phosphorus c 



Oxide of Tribenzyl Phosphine — Preparat 



Oxide of Tribenzyl Phosphine — Bromid* 



, , Chloride 



n the Acic 

 on and Pro 

 *j • 



. 623 



perties, 624 



. 624 



. 625 



,, Iodide, . 





. 625 



, , Hydrochlorate, 

 ,, Hydrobromate, 

 ,, Platinum Salt, 





626 

 626 

 626 



,, Palladium Salt, 





. 626 



,, Ferric Chloride Salt, 



. 626 



,, Mercuric Chloride Salt, 



626 



,, Cobaltous Chloride Salt, 



626 



,, Zinc Iodide Salt, . 



627 



,, Acetyl Chloride Com 



pound, 

 ,, Sulphur Compound, 

 ,, Nitro Compound, . 

 ,, Sulphonic Acid, 

 ,, Action of Fused Caustic 



627 

 627 

 627 

 627 



Potash on, 



627 





4 i 



3 





