Complex sentence: The choice was opposed by most of Boas'students with whom Linton had never been on good terms, the Boasians had expected Ruth Benedict to be the choice for Boas' successor.
Split into simpler sentences: The choice was opposed by most of Boas'students, with whom Linton had never been on good terms. The Boasians had expected Ruth Benedict to be the choice for Boas' successor.