biostudies-literatureUnknown65(Pt 9)Sisler EMThe 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.Acta crystallographica. Section E, Structure reports onlineo2231https://www.ebi.ac.uk/biostudies/studies/S-EPMC2970080biostudies-literature1,1,2,2-Tetra-kis(di-o-tolyl-phosphino)ethane.PMC2970080Gray DLArias KShelby QDSisler EMfalse1,1,2,2-Tetra-kis(di-o-tolyl-phosphino)ethane.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.2009-01-01T00:00:00Z2009 Aug2025-04-18T19:28:17.986Z2019-03-27T00:00:13ZS-EPMC29700802157763010.1107/S1600536809032942