CAS Number: 103-30-0
TRANS-1,2-DIPHENYLETHYLENE
TRANS-1,2-DIPHENYLETHYLENE, often simply referred to as trans-stilbene, is a stereoisomer of cis-stilbene and is characterized by a trans arrangement of its two phenyl groups on either side of a carbon-carbon double bond. Trans-stilbene is a colorless crystalline solid with applications in organic chemistry, particularly in the synthesis of other organic compounds.
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References
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Trans-1,2-diphenylethylene bridged salicylaldiminato–isoindoline titanium(IV) chloride complexes: Synthesis, characterization and catalytic polymerization
The literature by Wan, Zhang, Wang, Chen, and Weng describes the synthesis and characterization of a novel series of tridentate ligands featuring a substituted salicylaldiminato moiety linked to an isoindoline unit via a trans-1,2-diphenylethylene bridge. These ligands were used to prepare the corresponding titanium(IV) chloride complexes, [Ti(L)Cl?], which were obtained in moderate to good yields and characterized by spectroscopic methods, with X-ray crystallography confirming distorted octahedral geometries for two representative complexes. Upon activation with methylaluminoxane (MAO), all titanium complexes proved active as catalysts for ethylene (co)polymerization, achieving activities ranging from 12.4 to 232.0 kg-polymer/(mol Ti·h). Notably, the resulting polyethylene was highly linear with no detectable branching, and only a very low amount of 1-hexene was incorporated into the polymer main chain during copolymerization experiments.
DOI: 10.1016/j.jorganchem.2012.11.013