Bis[μ-1,2-bis-(diphenyl-phosphino)methane-κP:P']bis-[(η-ethene)nickel(0)] toluene disolvate.

Jens Langer,Helmar Görls,Reinhald Fischer,Dirk Walther

doi:10.1107/s1600536808002110

Jens Langer, Helmar Görls + Show 2 more

Open Access

https://doi.org/10.1107/s1600536808002110

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Abstract

In the title compound, [Ni2(C2H4)2(C25H22P2)2]·2C7H8, each Ni atom is coordinated in a trigonal-planar geometry by two P atoms of the bridging 1,2-bis(diphenylphosphino)methane (dppm) ligands and by the centroid of the double bond of an ethene ligand. An eight-membered ring comprising the two Ni atoms, four P atoms and the CH2 groups of the two dppm ligands is thus formed. The methyl group in one of the solvent toluene molecules is disordered over two positions with equal occupancies.

Highlights

Structure Reports OnlineKey indicators: single-crystal X-ray study; T = 183 K; mean (C–C) = 0.013 A; disorder in solvent or counterion; R factor = 0.086; wR factor = 0.234; data-toparameter ratio = 17.2
In the title compound, [Ni2(C2H4)2(C25H22P2)2]Á2C7H8, each Ni atom is coordinated in a trigonal-planar geometry by two P atoms of the bridging 1,2-bis(diphenylphosphino)methane ligands and by the centroid of the double bond of an ethene ligand
The methyl group in one of the solvent toluene molecules is disordered over two positions with equal occupancies

Summary

Structure Reports Online

Key indicators: single-crystal X-ray study; T = 183 K; mean (C–C) = 0.013 A; disorder in solvent or counterion; R factor = 0.086; wR factor = 0.234; data-toparameter ratio = 17.2. In the title compound, [Ni2(C2H4)2(C25H22P2)2]Á2C7H8, each Ni atom is coordinated in a trigonal-planar geometry by two P atoms of the bridging 1,2-bis(diphenylphosphino)methane (dppm) ligands and by the centroid of the double bond of an ethene ligand. An eight-membered ring comprising the two Ni atoms, four P atoms and the CH2 groups of the two dppm ligands is formed. The methyl group in one of the solvent toluene molecules is disordered over two positions with equal occupancies. Crystal data [Ni2(C2H4)2(C25H22P2)2]Á2C7H8 Mr = 1126.52 Triclinic, P1 a = 13.0963 (12) Ab = 15.2367 (16) Ac = 15.6177 (16) A = 70.566 (4) = 78.727 (4)

Data collection

Nonius KappaCCD diffractometer

Special details