4-[(tert-Butyl­diphenyl­sil­yloxy)meth­yl]pyridazin-3(2H)-one

In the title compound, C(21)H(24)N(2)O(2)Si, the carbonyl group of the heterocyclic ring and the O atom of the silyl ether group are placed toward opposite sides and the tert-butyl and pyridazinone moieties are anti-oriented across the Si—O bond [torsion angle = −168.44 (19)°]. In the crystal, mol­ecules are assembled into inversion dimers through co-operative N—H⋯O hydrogen bonds between the NH groups and O atoms of the pyridazinone rings of neighbouring mol­ecules. The dimers are linked by π–π inter­actions involving adjacent pyridazinone rings [centroid–centroid distance = 3.8095 (19) Å], generating ladder-like chains along the b-axis direction. The chains are further linked into a two-dimensional network parallel to the ab plane through weak C—H⋯π inter­actions.