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2013年诺贝尔化学奖授予三位美国科学家，以表彰他们在开发多尺度复杂化学系统模型方面所做的贡献。可以用量子化学计算小区间内（如光合作用叶绿体光反应时酶中、生物固氮时固氮酶中）的化学反应。 （1）固氮酶有由铁蛋白和钼铁蛋白两种，它们不仅能够催化N 2 还原成NH 3 以外，还能将环境底物乙炔催化还原成乙烯，下列说法正确的有 （不定项选择）。 a.C 2 H 2 、C 2 H 4 极性分子 b.碳负离子CH 3 － 呈三角锥形 c.NO + 电子式为 d.NH 3 沸点比N 2 高，主要是因为前者是极性分子 （2）钒可合成电池电极也可人工合成的二价钒（V）固氮酶（结构如下图）。 ①V 2+ 基态时核外电子排布式为 。 ②钒固氮酶钒的配位原子有 (写元素符号)。 ③熔融空气电池钒硼晶体晶胞结构如下图所示，该晶胞中含有钒原子数目为 。 （3）烟酰胺（结构式如图）可用于合成光合辅酶 NADPH ，烟酰胺分子中氮原子的杂化轨道类型有 ，1mol该分子中含σ键数目为 。
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