Polymorphism of 2,5-[(di­phenyl­phosphan­yl)meth­yl]-1,1,2,4,4,5-hexa­phenyl-1,4-diphospha-2,5-dibora­cyclo­hexa­ne

In two polymorphs of the tetra­hydro­furan disolvate of 2,5-[(di­phenyl­phosphan­yl)meth­yl]-1,1,2,4,4,5-hexa­phenyl-1,4-diphospha-2,5-dibora­cyclo­hexane and a pseudo-polymorph of the toluene solvate, the crystal packings are significantly different, but, surprisingly, their mol­ecular conformations are the same.