1,1,2,2-Tetrakis(diisopropylamino)diphosphane by Rafał Grubba, Łukasz Ponikiewski, Jarosław Chojnacki, Jerzy Pikies

“…In the title compound, C24H56N4P2, the distance between the P atoms [2.2988 (8) and 2.3013 (13) Å in the major and minor occupancy components, respectively] is one of the longest reported for uncoordinated diphosphanes. The whole molecule is disordered over two positions with site-occupation factors of 0.6447 (8) and 0.3553 (8). …”
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1,1,2,2-Tetraphenyl-1λ5-diphosphane 1-sulfide by Uwe Rosenthal, Anke Spannenberg, Bernd H. Müller, Normen Peulecke, Anina Wöhl, Stephan Peitz, Bhaskar R. Aluri

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The relative stabilities of cyclic dicationic derivatives of diphosphanes with three (3P) or four (4P) linked phosphorus atoms. by Bashforth, R, Boyall, A, Coffer, P, Dillon, K, Goeta, A, Howard, J, Kenwright, A, Probert, MR, Shepherd, H, Thompson, A

“…Reaction of a diphosphane with a chlorophosphane in the presence of SnCl(2) or AlCl(3) leads to the formation of dicationic heterocycles with three (3P) or four (4P) linked phosphorus atoms. …”

Dihalogeno(diphosphane)metal(II) complexes (metal = Co, Ni, Pd) as pre-catalysts for the vinyl/addition polymerization of norbornene - elucidation of the activation process with B(C6F5)(3)/AlEt3 or Ag[closo-1-CB11H12] and evidence for the in situ formation of "naked" Pd2+ as a highly active species by Lassahn, P, Lozan, V, Wu, B, Weller, A, Janiak, C

Cyclometallated Palladium(II) Complexes: An Approach to the First Dinuclear Bis(iminophosphorane)phosphane-[C,N,S] Metallacycle by Marcos Rúa-Sueiro, Paula Munín-Cruz, Adolfo Fernández, Juan M. Ortigueira, María Teresa Pereira, José M. Vila

“…Reaction of <b>3a</b> with bis(diphenylphosphino)ethane did not yield the expected product with the diphosphane bonded to both palladium atoms, but rather the novel coordination compound <b>5</b>. …”
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From the activation of tetraphosphorus to the chemistry of diphosphorus and beyond by Tofan, Daniel

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Bis{1,2-bis[bis(3-methoxypropyl)phosphanyl]ethane-&amp;#954;2P,P&amp;#8242;}dichloridoosmium(II) by Nathaniel K. Szymczak, Lev N. Zakharov, David R. Tyler

“…In the centrosymmetric title compound, [OsCl2(C18H40O4P2)2], the OsII atom adopts a trans-OsCl2P4 geometry, arising from its coordination by two chelating diphosphane ligands and two chloride ions. One of the methoxy side chains of the ligand is disordered over two orientations in a 0.700&amp;#8197;(6):0.300&amp;#8197;(6) ratio.…”
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Novel (n + 1 + 1) cycloaddition reactions; the formation of cyclic tetraphosphonium dications with four linked phosphorus atoms and an organic backbone. by Boyall, A, Dillon, K, Howard, J, Monks, P, Thompson, A

“…In the presence of SnCl(2), a novel cycloaddition of two moles of R'PCl(2) (R' = Et or Ph) to a diphosphane has been achieved, forming a cyclic dication with four linked phosphorus atoms and an organic backbone; two of these species have been characterised by single-crystal X-ray diffraction, and the mechanism of the reaction has been established.…”

Dinitrosylbis[tris(4-chlorophenyl)phosphane]iron by Myron W. Jones, Douglas R. Powell, George B. Richter-Addo

“…The title dinitrosyl iron diphosphane complex, [Fe(NO)2(C18H12Cl3P)2] or Fe(NO)2L2 [L = P(C6H4-p-Cl)3] belongs to the family of metal dinitrosyl compounds with the general formula Fe(NO)2(L)x, referred to collectively as dinitrosyl iron compounds (DNICs). …”
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<i>C</i>₂-Symmetric P-Stereogenic Ferrocene Ligands with Heavier Chalcogenophosphinous Acid Ester Donor Sites by Roman Franz, Clemens Bruhn, Rudolf Pietschnig

“…<i>tert</i>-Butyl-substituted diphospha[2]ferrocenophane was used as a stereochemically confined diphosphane to investigate the addition of various dichalcoganes (R2Ch2; Ch = S, Se, Te and R = Me, Ph). …”
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Carbon dioxide utilization : from fundamental reactivity to catalysis using transition metals supported by macrocyclic diphosphines by Knopf, Ioana

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Crystal structure of dicarbonyl[μ2-methylenebis(diphenylphosphane)-κ2P:P′][μ2-2-(2,4,5-trimethylphenyl)-3-oxoprop-1-ene-1,3-diyl](triphenylphosphane-κP)ironplatinum(Fe—Pt)–dichloro... by Lukas Brieger, Isabelle Jourdain, Michael Knorr, Carsten Strohmann

“…The title compound, [FePt(C12H12O)(C18H15P)(C25H22P2)(CO)2]·2C7H8·CH2Cl2 or [(OC)2Fe(μ-dppm)(μ-C(=O)C(2,4,5-C6H2Me3)=CH)Pt(PPh3)], represents an example of a diphosphane-bridged heterobimetallic dimetallacyclopentenone complex resulting from a bimetallic activation of 1-ethynyl-2,4,5-trimethylbenzene and a metal-coordinated carbonyl ligand. …”
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A family of cis-macrocyclic diphosphines: modular, stereoselective synthesis and application in catalytic CO₂/ethylene Coupling by Beetstra, Dirk, Al-Nezari, Abdulaziz, Al-Bahily, Khalid, Knopf, Ioana, Tofan, Daniel, Cummins, Christopher C

“…Alkylation of bicyclic diphosphane 3,4,8,9-tetramethyl-1,6-diphosphabicyclo(4.4.0)deca-3,8-diene, or P₂(dmb)₂ , produced phosphino-phosphonium salts [R-P₂(dmb)₂]X, where R is methyl, benzyl and isobutyl, in yields of 90-96%. …”
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A family of cis-macrocyclic diphosphines: modular, stereoselective synthesis and application in catalytic CO{subscript 2]/ethylene coupling by Beetstra, Dirk, Al-Nezari, Abdulaziz, Al-Bahily, Khalid, Knopf, Ioana, Tofan, Daniel, Cummins, Christopher C

“…Alkylation of bicyclic diphosphane 3,4,8,9-tetramethyl-1,6-diphosphabicyclo(4.4.0)deca-3,8-diene, or P[subscript 2](dmb)[subscript 2], produced phosphino-phosphonium salts [R-P[subscript 2](dmb)[subscript 2]]X, where R is methyl, benzyl and isobutyl, in yields of 90–96%. …”
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The intermolecular asymmetric Heck reaction: Mechanistic and computational studies by Hii, K, Claridge, T, Brown, J, Smith, A, Deeth, R

“…Reactive intermediates in the asymmetric Heck reaction between aryl electrophiles and 2,3-dihydrofuran have been identified by NMR and mass spectrometry, with BINAP or the achiral diphosphanes dppp and dppf as ligands. The major cationic species observed is an alkylpalladium produced by addition of PdAr to the alkene followed by two further PdH-mediated isomerisation steps. …”