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【请教】C(6)chain怎么计算的
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hydrogen bond self-assembles A molecules into C(6) chains, and C11A...O1A hydrogen bond joins two A molecules into centrosymmetric dimer of R22 (10) type. The combination of these two motifs forms tetramers through R24 (14) rings 其中的C(6)chain怎么计算的,还有下面的R22(10) type.是怎么算的? |













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