Description: 556 organic compounds -- part of the class 532-570 series / 556 organic compounds -- part of the class 532-570 series/() organic compounds (class 532, subclass 1) (1) heavy metal containing (e.g., ga, in or t1, etc.) (81) germanium, tin, or lead containing (ge, sn, or pb) (83) plural heavy metals bonded directly to the same chalcogen (e.g., two germaniums bonded directly to the same oxygen, etc.) (84) exactly three carbons bonded directly to each of the metals (e.g., bis tributyl tin oxides, etc.)
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