52843-12-6Relevant academic research and scientific papers
Nickel complexes with a O,N,O′-ligand and a phosphane co-ligand - Monometallic versus bimetallic complexes
Someya, Chika I.,Weidauer, Maik,Enthaler, Stephan
, p. 37 - 40 (2015)
The coordination chemistry of 5-hydroxypyrazoline ligand precursor 1 with Ni(OAc)2·4H2O and 1,1-bis(diphenylphosphino)methane (DPPM) as co-ligand to form the monometallic nickel complex 2 [Ni(1-2H)(DPPM)] was studied. The complex was
Bis(diphenylphosphino)methane-assisted Synthesis of Iron-platinum and -palladium Clusters. Crystal Structures of and (dppm=Ph2PCH2PPH2)
Braunstein, Pierre,Richert, Jean-Luc,Dusausoy, Yves
, p. 3801 - 3814 (2007/10/02)
Reactions of (dppm=Ph2PCH2PPh2) complexes with carbonyl reagents afforded dppm-bridged Fe-M mixed-metal complexes: (1) was best obtained using , (2) by the reaction K, (4) by the reaction with Na2, and (5) by the reaction with Na2.Reactions of Pd with Na2 afforded (6; M=Pd) and (7; M=Pt) in high yields.Cluster (7) was shown to exist in two isomeric forms.The kinetic isomer, isolated pure at -20 deg C, contains a terminal Pd-bound carbonyl whereas the thermodynamic isomer has a terminal Pt-bound carbonyl ligand.A 1:1 ratio is observed at equilibrium.The cluster (3) was obtained quantitatively by reaction of (1) or with 1 or 2 equivalents of dppm.These reactions were shown to occur first by substitution of the Pt-bound carbonyl ligand.Low-yield interconversion of (1) and (2) was observed as a result of metal-exchange reactions.The structures of clusters (1) and (2) have been established by single-crystal X-ray diffraction studies.In (1) a Fe-Pt bond is bridged by the dppm ligand and Fe(1)-Fe(2) 2.740(2), Pt-Fe(1) 2.542(1), and Pt-Fe(2) 2.557(1) Angstroem.In (2) the Pt-Pt bond is bridged by the dppm ligand and Fe-Pt(1) 2.541(3), Fe-Pt(2) 2.541(4), and Pt(1)-Pt(2) 2.581(1) Angstroem.The i.r. and n.m.r. spectra (1H, 1H-31P>, and 31P-1H>) of the new compounds are reported and discussed.
Rhodium(I)-Iron(0) Carbonyl Complexes containing One Bridging Ph2PCH2PPh2 Ligand, Including the Formation of a Tetranuclear Cluster from a Heterobimetallic Precursor: Crystal Structures of and
Jacobsen, Grant B.,Shaw, Bernard L.,Thornton-Pett, Mark
, p. 2751 - 2756 (2007/10/02)
Treatment of (dppm=Ph2PCH2PPh2) with in benzene gave (1) in 90percent yield.The structure of (1) has been established by a single-crystal X-ray diffraction study; the crystals are monoclinic, space group P21/n, with a=1 246.5(2), b=1 849.0(3), c=1 612.3(2) pm, β=110.34(1) deg, and Z=4; final R factor 0.0481 for 4 053 observed reflections.The structure shows that there is a metal-metal bond , formulated as a donor - acceptor bond, viz.Fe - Rh.None of the carbonyl ligands shows any bridging interactions.Treatment of (1) with lithium acetate in dichloromethane-methanol converted the binuclear complex into the tetranuclear cluster (3) in 69percent yield, also characterised by an X-ray diffraction study.Crystals of (3) are monoclinic, space group P21/n, with a=2 074.6(5), b=1 385.1(3), c=2 271.6(5) pm, β=117.48(2) deg, and Z=4; final R factor 0.0578 for 6 212 observed reflections.The structure is that of an unsupported Fe2Rh2 butterfly, the Rh-Rh distance of 405.4 pm indicating no interaction between the wing-tip atoms.Similar complexes are described for Ph2P(C=CH2)PPh2.
BIMETALLIC SYSTEMS. PART 22. MOLYBDENUM(0)-AND MANGANESE(I)-IRON(0) CARBONYL COMPLEXES CONTAINING ONE BRIDGING Ph2PCH2PPh2 LIGAND, INCLUDING THE REVERSIBLE UPTAKE OF CARBON MONOXIDE: CRYSTAL STRUCTURE OF -0.5 C6H5Cl
Jacobsen, Grant B.,Shaw, Bernard L.,Thornton-Pett, Mark
, p. 1509 - 1514 (2007/10/02)
Treatment of with dppm (Ph2PCH2PPh2) in tetrahydrofuran gave and other products.Treatment of with gave in 58percent yield.This bimetallic complex reacted reversibly with carbon monoxide, breaking the metal-metal bond to give .Treatment of with = norbornadiene (bicyclohepta-2,5-diene)> gave in 47percent yield.This bimetallic complex reacts with carbon monoxide to give a complex, formulated as , which was not isolated.Analogous reactions with the diphosphine CH2=C(PPh2)2 are described.Crystals of are tetragonal, space group/41cd (no. 110), with a = 1 853.1(4), c = 4 106.8(9) p0m, and Z = 16; final R = 0.0633 for 3 357 observed reflections.The structure shows that there is a metal-metal bond formulated as a donor acceptor bond, viz.FeMo.
The systematic Synthesis of Heterobimetallic Complexes with only One Bridging Ph2PCH2PPh2 (dppm) Ligand: Crystal Structures of and
Jacobsen, Grant B.,Shaw, Bernard L.,Thornton-Pet, Mark
, p. 13 - 15 (2007/10/02)
(dppm = Ph2PCH2PPh2) reacts with to give with an Fe-Rh bond but no bridging carbonyl group; with the product shows some bridging interaction of one of the carbonyl ligands.
REACTIONS OF METAL CARBONYL CLUSTER COMPLEXES WITH MULTIDENTATE PHOSPHINE LIGANDS; PREPARATION OF BIS(DIPHENYLPHOSPHINO)METHANE DERIVATIVES OF THE TRINUCLEAR COMPLEXES M3(CO)12 (M = Fe, Ru AND Os) AND THE X-RAY CRYSTAL STRUCTURE OF Os3(CO)9(μ-dppm)(Η
Cartwright, Simon,Clucas, Jennifer A.,Dawson, Richard H.,Foster, Douglas F.,Harding, Marjorie M.,Smith, Anthony K.
, p. 403 - 412 (2007/10/02)
The reaction of bis(diphenylphosphino)methane (dppm) with Fe3(CO)12 gave the known complexes Fe(CO)4(dppm), Fe2(CO7(dppm), in addition to Fe2(CO)5-(dppm)2.Two new dppm derivatives of Ru3(CO)12, Ru3(CO)9(μ-dppm)(η1-dppm) and Ru3(CO)6(dppm)3 have
