Abstract
In quantum mechanics no specific molecular structure is assigned from first principles. Franklin and Seifert (2020) argue that this is due to the measurement problem. I explore the implications of this to the metaphysical understanding of structure. Specifically, I propose two metaphysical views: the dispositional and relational view. According to the first, isolated molecules maintain their structure only as dispositions. On the second, structure comes about only in relation to some environment. I evaluate how these two views match with the metaphysical implications of realist interpretations to quantum mechanics and conclude that both views radically revise our understanding of structure.