哈普托數
Multi tool use
哈普托數（英文hapticity）是說明在配體中一群相連的原子如何和中心原子配位。配體的hapticity會用希臘字母η來表示，η上標的數字表示配體中有幾個相連的原子和中心原子配位。一般來說上述的標示只適用在不只一個原子參與配位的情形。
如二茂鐵中環戊二烯（Cp）有五個原子參與鍵結，因此其哈普托數為5。
在有機金屬化學中，常用哈普托數來標示有機的配體如何和中心金屬配位。
有机金属化学
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| 规则 |
- 电子计数
- 18电子规则
- 多面体骨架电子对理论
- 等瓣性原理
- 反馈π键
- 哈普托数
- d电子数
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| 反应 |
- 氧化加成及还原消去
- 迁移插入
- β-氢消除反应
- 转移金属化
- 碳金属化
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| 化合物类型 |
- 吉尔曼试剂
- 格氏试剂
- 茂基配合物
- 茂金属
- 夹心型配合物
- 过渡金属卡宾配合物
- 过渡金属卡拜配合物
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| 应用 |
- 蒙山都法
- 齐格勒-纳塔工艺
- 壳牌高级烯烃工艺
- 烯烃复分解反应
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相关化学分支
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