Foreword 1
Ⅰ.Heterocyclic Derivatives of Phosphorus 9
Five-Membered Ring Systems Containing Only Carbon and Phosphorus 9
Cyclotetramethylenephosphines 9
Six-Membered Ring Systems Containing Only Carbon and Phosphorus 10
Cyclopentamethylenephosphines 10
1,2,3,4-Tetrahydroisophosphinolines 10
Four-Membered Ring Systems Containing Carbon,Phosphorus,and Oxygen 13
Five-Membered Ring Systems Containing Carbon,Phosphorus,and Nitrogen 14
Five-Membered Ring Systems Containing Carbon,Phosphorus,and Oxygen 17
o-Phenylenechlorophosphonites 17
Six-Membered Ring Systems Containing Carbon,Phosphorus,and Nitrogen 19
Phenphosphazines 19
Six-Membered Ring Systems Containing Carbon,Phosphorus,and Oxygen 21
Salicylchlorophosphonite 21
Ten-Membered Ring Systems Containing Carbon,Phosphorus,and Oxygen 22
Ⅱ.Heterocyclic Derivatives of Arsenic 25
Five-Menmbered Ring Systems Containing Only Carbon and Arsenic 25
Cyelotetramethylenearsines 25
Arsindoles 26
Arsindolines and Isoarsindolines 30
Arsindolines 30
Isearsindolines 31
Arsafluorenes or 2,3-Bcnzarsindoles 36
Six-Mernbered Ring Systems Containing Only Carbon and Arsenic 38
Cyclopentamethylenearsines 38
Tetrahydroarsinolines and Tetrahydroisoarsinolines 42
1,2,3,4-Tetrahydroarsinolines 43
1,2,3,4-Tetrahydroisoarsinolines 45
Arsacridines 49
Arsanthridines 52
2-Arsaperinaphthanes（or 2-Arsaperinaphthindanes） 55
Seven-Membered Ring Systems Containing Only Carbon and Arsenic 57
6-Arsa-1,2,3,4-dibenzcyclohepta-1,3-dienes 57
Five-Membered Ring Systems Containing Carbon, Arsenic, and Oxygen 58
Anhydrides of o-Carboxyphenyl Arsinous and Arsinic Acids 58
o-Phenylenephenylarsonite 62
Spirocyclic Esters of Glycols,o-Dihydroxybenzenes,and α-Hydroxy-carboxylic Acids with Arsonic Acids 62
Tripyrocatechylarsenic Acid 67
Five-Membered Ring Systems Containing Carbon,Arsenic,and Sulfur 70
2-Arsa-1,3-dithiacyclopentanes 70
Five-Membered Ring Systems Containing Carbon,Oxygen,and Two Arsenic Atoms 75
Anhydride of o-Phenylene- bisarsonous Chloride 75
Anhydride of 5,10-Dihydroxy-5,10-dihydroarsanthrene 75
Five-Membered Ring Systems Containing Carbon,Palladium,and Two Arsenic Atoms 77
Six-Membered Ring Systems Containing Carbon, Arsenic, and Nitrogen 80
Phenarsazines 80
Azaphenarsazines 99
Six-Membered Ring Systems Containing Carbon,Arsenic,and Oxygen 100
Phenoxarsines 100
Six-Membered Ring Systems Containing Carbon,Arsenic,and Sulfur 114
Phenyl-thiarsine 114
Phenthiarsine 114
Six-Membered Ring Systems Containing Carbon and Two Arsenic Atoms 116
Ethylene-o-phenylenediarsine 116
Arsanthrene and Its Derivatives 117
Tri-o-phenylenediarsine 125
Seven-Membered Ring Systems Containing Carbon and Two Arsenic Atorns 127
o-Phenylenetrimethylenediarsine 127
Ⅲ.Heterocyclic Derivatives of Antimony 129
Five-Membered Ring Systems Containing Only Carbon and Antimony 129
Cyclotetramethylenestibines 129
Stibinafluorenes 130
Six-Membered Ring Systems Containing Only Carbon and Antimony 134
Cyclopentamethylenestibines 134
Stibacridines 135
Five-Membered Ring Systems Containing Carbon,Antimony,and Oxygen 140
Potassium Antimonyl Tartrate（Tartar Emetic） 140
Derivatives of Pyrocateehol and Other 1,2-Dihydric Phenols 143
Five-Membered Ring Systems Containing Carbon,Antimony,and Sulfur 150
2-Stibina-1,3-dithiacyclopentanes 150
Five-Membered Ring Systems Containing Carbon,Antimony,Oxygen,and Sulfur 151
Antimony Derivatives of Thioglycollic Acid 151
Six-Membered Ring Systems Containing Carbon,Antimony,and Oxygen 152
Phenoxstibines 152
Ⅳ.Heterocyclic Derivatives of Bismuth 157
Six-Membered Ring Systems Containing Only Carbon and Bismuth 157
Cyclopentamethylenebismuthine 157
Five-Membered Ring Systems Containing Carbon,Bismuth,and Oxygen 158
Derivatives of Pyrocatechol and Other 1,2-Dihydric Phenols 158
Ⅴ.Heterocyclic Derivatives of Silicon 161
Six-Membered Ring Systems Containing Only Carbon and Silicon 161
Cyclopentamethylenesilicon Derivatives 161
Index 163