No abstract

In the title centrosymmetric dinuclear compound, [Cu2(C8H7O2)4(C8H8O2)2], four o-toluate anions form a cage around two Cu atoms in a syn–syn configuration. Two more o-toluic acid mol­ecules are apically bonded to the Cu atoms, which show a square-pyramidal coordination geometry. The acid H atoms are hydrogen bonded to the cage carboxyl O atoms [O⋯O = 2.660 (2) Å]. The mol­ecular packing forms a puckered pseudo-hexa­gonal close-packed layer in the (h00) plane, with soft inter­molecular H⋯H contacts (2.46–2.58 Å).

Key indicators: single-crystal X-ray study; T = 293 K; mean (C-C) = 0.008 Å; R factor = 0.041; wR factor = 0.122; data-to-parameter ratio = 25.4.The title compound, [PdBr(C 24 H 49 P 2 )], has a distorted squareplanar coordination geometry with the P,C,P 0 -tridentate ligand forming two five-membered chelate rings. The Br atom is displaced from the square plane by 0.560 (6) Å . metal-organic compounds CommentThe title compound belongs to a family of C-sp 3 -H activated PCP complexes that show interesting catalytic performance in C-C coupling reactions (Ohff et al.,1997; Sjövall et al., 2002;Nilsson & Wendt, 2005). The iodide and trifluoroacetate analogues have previously been prepared and the crystal structure of the iodide described (Sjövall et al., 2002).

Key indicatorsSingle-crystal X-ray study T = 293 K Mean (C-C) = 0.005 Å R factor = 0.036 wR factor = 0.083 Data-to-parameter ratio = 20.0 For details of how these key indicators were automatically derived from the article, see

Key indicatorsSingle-crystal X-ray study T = 293 K Mean (C-C) = 0.007 Å R factor = 0.046 wR factor = 0.097 Data-to-parameter ratio = 15.6For details of how these key indicators were automatically derived from the article, see