1988
DOI: 10.1002/cber.19881210604
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Übergangsmetall‐funktionalisierte Phosphaarsene (η5‐C5H4R)(CO)(PPh3)FeAsPC6H2(TBu)3(2,4,6) (R = H, Me) und 1,3,2,4‐Diphosphadiarsetane [η5‐C5Me5)(CO)2FeAsPC6H2Me3(2,4,6)]2

Abstract: Die &rgangsmetall-substituierten Phosphaarsene (qS-CsH4R)-( C O ) ( P P~~) F~-A~= P -G H~( C B~)~~,~,~)(R = H, CH3) (2a, b)entstehen bei der Reaktion von (q5-C5hR)(CO#PPh3)Fe-As-(SiMe3k (la, b) mit 2,4,6-(tB~)~C,&PCl~ (ArPCI2). Bei der Umsetzung von (qS-C5Me&COkFe -As(SiMe3)* mit 2,4,6-Me3C& Ar-P=As-CH(SiMe3);) (Me3Si)3C-As=P-C(SiMe3j:J Ar-P=A~-c~H~(iPr)~(2,4,6)''Kurzlich berichteten wir uber die Synthese stabiler Ubergangsmetall-substituierter Diphosphene (Diphosphenylkomplexe), die gemaI3 GI. (1) glatt entst… Show more

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Cited by 22 publications
(4 citation statements)
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“…In particular, the P−As distances in the cation (2.2559(17) Å and 2.2542(18) Å) are considerably shorter than the corresponding distances in the anion (2.5383(15) Å and 2.5275(14) Å). It should be noted that the average As−P single bond distance from the Cambridge Structural Database is 2.341 Å and the longest distance previously reported was 2.394 Å . While the steric consequences of the high coordination number of the As atom in the anion results in a significantly increased As−P distance, the shorter AS−P distance in the cation is consistent with the presence of π back-bonding between the As I center and the dppe ligand.…”
Section: Resultsmentioning
confidence: 65%
“…In particular, the P−As distances in the cation (2.2559(17) Å and 2.2542(18) Å) are considerably shorter than the corresponding distances in the anion (2.5383(15) Å and 2.5275(14) Å). It should be noted that the average As−P single bond distance from the Cambridge Structural Database is 2.341 Å and the longest distance previously reported was 2.394 Å . While the steric consequences of the high coordination number of the As atom in the anion results in a significantly increased As−P distance, the shorter AS−P distance in the cation is consistent with the presence of π back-bonding between the As I center and the dppe ligand.…”
Section: Resultsmentioning
confidence: 65%
“…The analogous phosphorus–antimony compound [2,4,6‐ t Bu 3 C 6 H 2 ] 2 P 2 Sb 2 is known as well . An all‐ trans configuration of the substituents is observed in the four‐membered As 2 P 2 ring compounds [{Cp*(CO) 2 FeAs} 2 (MesP) 2 ] and [( t BuPh 2 SiP) 2 {(Me 3 Si) 2 CHAs} 2 ] , . Radial triarsaphosphanes P[As{C(O)R} 2 ] 3 (R = t Bu, Ph), synthesized by Jones et al, bear three phenyl‐ or tert ‐butyl‐diacylarsenido substituents on the phosphorus atom , .…”
Section: Introductionmentioning
confidence: 99%
“…Elemental analysis for C 48 H 50 P 4 Cl 2 found (calcd): C 69.71 (70. 16), H 6.01 (6.13), N 0.02 (0.00).…”
Section: ■ Experimental Sectionmentioning
confidence: 99%
“…The heavier congeners, such as cyclodiarsadiphosphanes, are found even more infrequently; e.g., Power et al reported on the structure of the corresponding [1.1.0]­bicycle [As­(μ-P-Mes*)] 2 and the heavier congener [Sb­(μ-P-Mes*)] 2 (Scheme ). Futhermore, [1.1.0]­bicyclic tetraarsane bearing tert -butyl substituents had already been generated by Baudler et al, while the [1.1.0]­bicyclic tetrastibane was published only recently by S. Schulz et al featuring a bulky gallyl substituent …”
Section: Introductionmentioning
confidence: 99%