Bi-, Tri-, and Tetranuclear Metallomacrocycles Constructed by Metal-Directed Reactions Involving Resorcinol or Hydroquinone or by Addition of Octahedral Metal Centers to Tetrahexylcalix[4]resorcinarene: X-ray Crystal Structure of syn,syn-[Mo{HB(3,5-Me(2)C(3)HN(2))(3)}(NO)(1,4-O(2)C(6)H(4))](3).