n.二氮陆圜;吡啶;
例句:
1、
含氮杂环-联吡啶、联嘧啶和连氮等杂环化合物及其衍生物-是最常见的多齿配体之一，这些配体与金属Cu（Ⅰ）能形成一维、二维和三维结构的配合物。
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2、
为降低含酮连氮废水中的酮连氮含量，采用高效精馏塔，在提馏段将酮连氮从废水中汽提出来，在精馏段通过精馏将有机物料浓缩，达到回收的要求。
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3、
文中讨论了酮连氮水解制备肼的各种方法及催化剂对酮连氮水解和肼收率的影响。
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