trill spanner over whole note

[Molly Preston]

Hi again.

I am trying to get a trill spanner over a quarter note tied to a whole note and through that measure.

\new Staff {

    r2 r4 c' ~  \startTrillSpan|

    << { c'1 \< } \\ {s4 s s s \stopTrillSpan } >>

    d'1\f  | 

  }

I tried to use the spacer rests for this but it doesn't seem to do what I want and the tie and crescendo aren't working here either.

Any help or explanations would be helpful.

Molly