更改

| [[File:Cyclopropane-skeletal.png |65px|环丙烷的结构]] || [[File:Aziridin.png |44px|吖丙啶的结构]] || [[File:Ethylene-oxide-2D-skeletal.png |72px|环氧乙烷的结构]] || [[File:Thiiran.png|60px|环硫乙烷的结构]] || [[File:Azirin.png|60px|1-吖丙因的结构]] || [[File:Oxiren.png|60px|噁丙烯的结构]] || [[File:Thiiren.png|60px|噻丙烯的结构]]

| [[File:Square - black simple.svg |90px|环丁烷的结构]] || [[File:Azetidine structure.svg |93px|吖丁啶的结构]] || [[File:Oxetan.png |60px|噁丁环的结构]] || [[File:Thietan.png|60px|噻丁环的结构]] || [[File:Azete structure.svg|76px|1,3-吖丁的结构]] || [[File:Oxetium.png|70px|Oxetium ion的结构]] || [[File:Thietium.png|70px|Thietium ion的结构]]

| [[File:Cyclopentan.png |72px|环戊烷的结构]] || [[File:Pyrrolidin.png |60px|吡咯烷的结构]] || [[File:Tetrahydrofuran.png |70px|四氢呋喃的结构]] || [[File:Tetrahydrothiophen.png|70px|四氢噻吩的结构]] || [[File:Pyrrol2.svg|70px|吡咯的结构]] || [[File:Furan.svg|70px|呋喃的结构]] || [[File:Thiophen.svg|70px|噻吩的结构]]

| [[File:Cyclohexane simple.svg |80px|环己烷的结构]] || [[File:Piperidin.svg |60px|哌啶的结构]] || [[File:Tetrahydropyran2.png |70px|四氢吡喃的结构]] || [[File:Tetrahydrothiopyran.png|70px|四氢噻喃的结构]] || [[File:Pyridin.svg|70px|吡啶的结构]] || [[File:2H-Pyran.png|70px|吡喃的结构]] || [[File:1,2-Thiapyran.svg|70px|噻喃的结构]]

| [[File:Cycloheptane.PNG |77px|环庚烷的结构]] || [[File:Azepan.png |66px|吖庚环的结构]] || [[File:Oxepan.png |70px|噁庚环的结构]] || [[File:Thiepan.png|70px|噻庚环的结构]] || [[File:Azepine-2D-skeletal.png|70px|吖庚因的结构]] || [[File:Oxepin.png|74px|噁庚因的结构]] || [[File:Thiepin2.png|70px|噻庚因的结构]]

|colspan="2"|<gallery heights=90px>File:Azarines.svg|[[2-吖丙因]]（2-氮丙烯）</gallery>

|colspan="2"|<gallery heights=80px>File:1-Azetine.svg|[[1-吖丁]]<br />（1-氮环丁烯）File:2-Azetine.svg|[[2-吖丁]]<br />（2-氮环丁烯）File:Oxetene.png|[[2-噁丁]]<br />（氧环丁烯）File:Thietene.png|[[2-噻丁]]<br />（硫环丁烯）</gallery>

|<gallery heights=100px>File:1-pyrroline chemical structure.png|[[1-吡咯啉]]File:2-pyrroline chemical structure.png|[[2-吡咯啉]]File:3-pyrroline chemical structure.png|[[3-吡咯啉]]</gallery>

|<gallery heights=90px>File:2,5-Dihydrofuran'.svg|[[2,5-二氢呋喃]]File:2,3-Dihydrofuran'.svg|[[2,3-二氢呋喃]]</gallery>

|<gallery heights=90px>File:2,5-Dihydrothiophene.svg|[[2,5-二氢噻吩]]File:2,3-Dihydrothiophene'.svg|[[2,3-二氢噻吩]]</gallery>

|<gallery heights=100px>File:Arsole.png|[[砷杂茂]]（[[:en:Arsole|Arsole]]）File:UnsubstitutedPhosphole.png|[[磷杂茂]]（[[:en:Phosphole|Phosphole]]）File:Sulfolane-2D-skeletal.png|[[环丁砜]]</gallery>

|<gallery heights=100px>File:Dihydropyridine.png|[[二氢吡啶]]</gallery>

|<gallery heights=100px>File:1,2,3,4-Tetrahydropyridine.svg|[[1,2,3,4-四氢吡啶]]File:1,2,3,6-Tetrahydropyridine.svg|[[1,2,3,6-四氢吡啶]]File:2,3,4,5-Tetrahydropyridine.svg|[[2,3,4,5-四氢吡啶]]</gallery>

!style="background:#DCDCDC" |[[吡喃]]<br />　<br />[[二氢吡喃]]|<gallery heights=100px>File:2H-Pyran.svg|[[α-吡喃]]<br />（1,2-吡喃）File:4H-Pyran.png|[[γ-吡喃]]<br />（1,4-吡喃）File:3,4-Dihydro-2H-pyran.svg|[[二氢吡喃|3,4-二氢-2''H''-吡喃]]<br />（2,3-二氢吡喃）</gallery>|-!style="background:#DCDCDC" |[[噻喃]]|<gallery heights=100px>File:1,2-Thiapyran.svg|[[α-噻喃]]<br />（1,2-噻喃）File:1,4-Thiapyran.svg|[[γ-噻喃]]<br />（1,4-噻喃）</gallery>|-!style="background:#DCDCDC" |其他|<gallery heights=100px>