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1,1,2,2-Tetra-kis(di-o-tolyl-phosphino)ethane.

ABSTRACT: The complete molecule of title compound, C(58)H(58)P(4), is generated by a crystallographic twofold rotation axis that passes through the center of the C(methine)-C(methine) bond of length 1.582?(4)?Å. The C-P bond lengths are 1.8824?(19) and 1.8991?(19)?Å. The P-C-P angle of 109.69?(9)° is essentially equal to the expected value of 109.5° for a tetra-hedral C atom. Although the C(methine)-P-C(aromatic) bond angles range from 102.67?(9) to 107.04?(9)°, the C(aromatic)-P-C(aromatic) bond angles of 96.72?(9) and 97.29?(9)° are significantly smaller. The steric demands of the o-tolyl groups cause deviations from the bond lengths and angles reported for its phenyl analog.

SUBMITTER: Sisler EM

PROVIDER: S-EPMC2970080 | biostudies-other | 2009

REPOSITORIES: biostudies-other

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1,1,2,2-Tetra-kis(di-o-tolyl-phosphino)ethane.

Sisler Elizabeth M EM Arias Karla K Gray Danielle L DL Shelby Quinetta D QD

Acta crystallographica. Section E, Structure reports online 20090826 Pt 9

The complete molecule of title compound, C(58)H(58)P(4), is generated by a crystallographic twofold rotation axis that passes through the center of the C(methine)-C(methine) bond of length 1.582 (4) Å. The C-P bond lengths are 1.8824 (19) and 1.8991 (19) Å. The P-C-P angle of 109.69 (9)° is essentially equal to the expected value of 109.5° for a tetra-hedral C atom. Although the C(methine)-P-C(aromatic) bond angles range from 102.67 (9) to 107.04 (9)°, the C(aromatic)-P-C(aromatic) bond angles o ...[more]

PMID: 21577630

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