Nitrogen Sulfide - Leucathio

A general term for compounds consisting of S and N. Also called sulfur nitride. Examples include _{N 2} S ₂ , N ₄ S ₄ , N ₂ S ₄ , and N ₆ S _5. NS, which corresponds to NO, exists in a form coordinated to a metal atom. [ I ] N ₂ S ₂ (92.14): Obtained by passing N ₄ S ₄ vapor through silver cotton or silver net. A colorless, volatile solid. The molecular structure is a square planar shape. Like N ₄ S ₄ , it is explosive. Decomposes into N ₂ and S at temperatures above 35°C. Soluble in organic solvents. It is easy to form polymers at room temperature. [CAS 25474-92-4][See other terms]Poly(nitrogen sulfide) [ II ] N ₄ S ₄ (187.29): Obtained by passing NH ₃ gas through a warm CCl ₄ solution of S ₂ Cl ₂ or SCl _2. An air-stable solid that exhibits thermochromism. -190 °C: colorless, 25 °C: yellow-orange, 100 °C: red. Melting point: 178.2 °C. Density: 2.22 g cm ^-3 (15 °C). It explodes when crushed, impacted, rubbed, or rapidly heated. Its molecular structure is an eight-membered ring, and as shown in the figure, it is a combination of a planar square formed by N atoms and a tetrahedron formed by S atoms. It is used as a raw material for other compounds with SN bonds. [CAS 28950-34-7] [ III ] N ₂ S ₄ (156.27): Obtained by heating a CS ₂ solution of N ₄ S ₄ and S in an autoclave. Dark red solid. Melting point: 23 °C. Density: 1.71 g cm ^-3 (20 °C). Diamagnetic. It is a six-membered ring structure with N atoms occupying the 1st and 3rd positions, and SNSNS is almost flat and has a half-chair structure. [CAS 79796-31-9] [ IV ] N ₆ S ₅ (244.37): Obtained by oxidizing S ₄ N ₅ ^- with bromine at 0 °C, or by reacting S ₄ N ₄ Cl ₂ with (CH ₃ ) ₃ SiNSNSi(CH ₃ ) _3. An air-active, explosive, yellow-brown solid. It sublimes at 45 °C/1.33 Pa. It has a structure in which the S...S of _{N 4} S ₄ are bridged with N ₂ S. [CAS 68993-02-2]

Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition

SとNからなる化合物の総称．窒化硫黄(sulfur nitride)ともいう．N₂S₂，N₄S₄，N₂S₄，N₆S₅などがある．NOに対応するNSは，金属原子に配位した形で存在する．【Ⅰ】N₂S₂(92.14)：N₄S₄蒸気を銀綿や銀網を通して得られる．無色の揮発性固体．分子構造は平面四角形．N₄S₄と同様爆発性がある．35 ℃ 以上で N₂ とSに分解する．有機溶媒に可溶．常温で，ポリマーをつくりやすい．[CAS 25474-92-4][別用語参照]ポリ(硫化窒素)【Ⅱ】N₄S₄(187.29)：NH₃ガスをS₂Cl₂またはSCl₂の温かいCCl₄溶液に通して得られる．サーモクロミズムを示す空気中で安定な固体．－190 ℃ ：無色，25 ℃ ：黄橙色，100 ℃ ：赤．融点178.2 ℃．密度2.22 g cm^－3(15℃)．粉砕，衝撃，摩擦，および急激な加熱などにより爆発する．分子構造は八員環で，図に示すように，N原子がつくる平面四角形と，S原子がつくる四面体の組み合わせとなっている．ほかのS-N結合をもつ化合物の原料に用いられる．[CAS 28950-34-7]【Ⅲ】N₂S₄(156.27)：N₄S₄とSのCS₂溶液をオートクレーブ中で加熱して得られる．暗赤色の固体．融点23 ℃．密度1.71 g cm^－3(20 ℃)．反磁性．N原子が1，3位を占める六員環構造で，S-N-S-N-Sはほぼ平面にあり，半いす形構造．[CAS 79796-31-9]【Ⅳ】N₆S₅(244.37)：0 ℃ でS₄N₅^－を臭素で酸化するか，S₄N₄Cl₂と(CH₃)₃SiNSNSi(CH₃)₃を反応させると得られる．空気に活性な爆発性のある黄褐色の固体．45 ℃/1.33 Pa で昇華する．N₄S₄のS…S間にN₂Sで架橋した構造をとっている．[CAS 68993-02-2]

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