title: Diethyl 2,2-bis-(3,5-di-tert-butyl-4-hy-droxy-benz-yl)malonate.
abstract: The title mol-ecule, C(37)H(56)O(6), possesses twofold symmetry, with the twofold axis passing through the quaternary C atom. In the crystal, neighbouring mol-ecules are linked via O-H⋯O hydrogen bonds involving the phenol OH group and the carbonyl O atom, forming chains propagating in [101]. Within these chains, rings are formed with an R(2) (2)(20) motif. There are also C-H⋯O inter-actions present within the rings.
authors.forename: Tao
authors.initials: T
authors.lastname: Zeng
authors.forename: Yu-Ping
authors.initials: YP
authors.lastname: Hou
authors.forename: Wan-Zhong
authors.initials: WZ
authors.lastname: Ren
authors.forename: Wen-You
authors.initials: WY
authors.lastname: Xu