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Metal-carbene-catalyzed ring opening metathesis polymerization (ROMP) furnishes a powerful arsenal for the synthesis of various polycycloalkenes.Polynorbomene-and polycyclobutene-based double stranded ladderphanes having rigid plannar aromatic, antiaromatic, as well as three dimensional organic and organometallic linkers are obtained from ROMP of the corresponding strained bis-cycloalkenes.