Publications by Laura de Quadras

Publications by authors named "Laura de Quadras"

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sp carbon chains surrounded by sp(3) carbon double helices: directed syntheses of wirelike Pt(CC)(n)Pt moieties that are spanned by two P(CH(2))(m)P linkages via alkene metathesis.

Laura de Quadras Eike B Bauer Wolfgang Mohr James C Bohling Thomas B Peters

J Am Chem Soc

July 2007

Reactions of trans-(C6F5)(Ph2P(CH2)m'CH=CH2)2PtCl (1; m' = a, 6; b, 7; c, 8; d, 9; e, 10) and H(CC)2H (HNEt2, cat. CuI) give trans-(C6F5)(Ph2P(CH2)m'CH=CH2)2Pt(CC)2H (3a-e, 80-95%). Oxidative homocouplings of 3a-d under Hay conditions (O2, cat.

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sp carbon chains surrounded by sp(3) carbon double helices: coordination-driven self-assembly of wirelike Pt(CC)(n)Pt moieties that are spanned by two P(CH(2))(m)P linkages.

Jürgen Stahl Wolfgang Mohr Laura de Quadras Thomas B Peters James C Bohling

J Am Chem Soc

July 2007

Article Synopsis

The study explores the synthesis of unique platinum complexes, specifically trans,trans-(C6F5)(Ar2P(CH2)mPAr2)Pt(CC)4Pt(Ar2P(CH2)mPAr2)(C6F5), utilizing diphosphines that connect platinum atoms through sp and sp3 carbon chains.
Crystal structures reveal that the sp3 chains in complexes 3-5 form chiral double-helical conformations, which shield the linear sp chain, with the platinum square planes displaying significant angular twists.
The research indicates that these double-helical molecules do not rely on conventional bonding interactions common in such structures, and it discusses the driving forces behind their

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Wire-like PtC[triple bond]CC[triple bond]CC[triple bond]CC[triple bond]CPt moieties surrounded by double-helical "insulation": new motifs featuring P(CH2)20P and P(CH2)4O(CH2)2O(CH2)4P linkages.

Laura de Quadras Frank Hampel J A Gladysz

Dalton Trans

June 2006

Ring-closing alkene metatheses of trans,trans-(C6F5)(Ph2P-Z-CH=CH2)2Pt(C[triple bond]C)4Pt(Ph2P-Z-CH=CH2)2(C6F5) (Z = (CH2)9, (CH2)4O(CH2)2), followed by hydrogenation, give the title compounds; the former exhibits an exceptionally twisted conformation, and the latter establishes that functional groups can be incorporated into the flexible sp3 chain.

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