The crystal structure of di-μ-chloro-bis(triphenylphosphite)(cycloocta-1,5-diene)dirhodium(I)

Coetzer, J.; Gafner, G.

doi:10.1107/s0567740870003461

Cited by 41 publications

(15 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Rh−As distance of 3 is 2.306(2) Å (see Table ) and therefore significantly shorter than the Rh−As bond length in trans -[RhCl(η 2 -CH 2 CCH 2 )(As i Pr 3 ) 2 ] (average value 2.43 Å) . The Rh−P distance of 2.187(2) Å is comparable to that of chloro-bridged rhodium(I) complexes with mono- or bidentate phosphine ligands; , however, it is shorter than the Rh−P bond length in [Rh(η 4 -C 8 H 12 )(κ 2 - P , Sb - i Pr 2 PCH 2 Sb t Bu 2 )] + (2.317(1) Å) . The distances between the two rhodium centers and the bridging chlorides as well as those between Rh1 and the sp 2 carbon atoms of the diolefin fall into the expected range and thus deserve no further comment.…”

Section: Resultsmentioning

confidence: 89%

See 1 more Smart Citation

Organometallic Rhodium Complexes Containing Peralkylated Arsino(phosphino)methanes as Ligands

et al. 1998

View full text Add to dashboard Cite

The peralkylated arsino(phosphino)methanes R2AsCH2PR2 (R = iPr, Cy) reacted with [{(η4-C8H12)RhCl}2] by cleavage of the chloro bridges to give the mononuclear compounds [RhCl(η4-C8H12)(κ-P-R2PCH2AsR2)] (1, 2). In contrast, treatment of the dimeric cyclooctadiene complex with the tBu-substituted derivative tBu2AsCH2PiPr2 afforded dinuclear [{Rh(η4-C8H12)}{Rh(κ2-As,P-tBu2AsCH2PiPr2)}(μ-Cl)2] (3), the first example of a d8 transition-metal compound containing a CH2-bridged As/P donor system as a chelating ligand. The X-ray crystal structure of 3 has been determined. Cationic complexes [Rh(η4-C8H12)(κ2-As,P-R2AsCH2PR‘2)]PF6 (4a, 5a, 6a) were obtained from [{(η4-C8H12)RhCl}2], R2AsCH2PR‘2, and MPF6 (M = K, Ag). The corresponding BPh4 salts (4b, 5b, 6b) were prepared from the PF6 salts upon metathesis with NaBPh4. The chelate compounds 4−6 reacted with CH2N2 by insertion of CH2 into the Rh−As bond to yield the complexes [Rh(η4-C8H12)(κ2-C,P-CH2As(R)2CH2PR‘2)]PF6 (7−9), which contain a five-membered metallacycle adopting an envelope conformation in the crystal. The reaction of the BPh4 salts 4b and 5b with H2 gave the half-sandwich-type complexes [(η6-C6H5BPh3)Rh(κ2-As,P-R2AsCH2PR‘2)] (10, 11), in which the tetraphenylborate is coordinated like a substituted arene to the metal center. Treatment of the PF6 salt 6a with H2 in the presence of CF3CO2H led to the formation of the unusual dinuclear hydrido-bridged complex [{RhH(κ2-As,P-Cy2AsCH2PCy2)}2(μ-H)(μ-O2CCF3)2]PF6 (12).

show abstract

Section: Resultsmentioning

confidence: 89%

“…The angle between the two planes [Cl1, Rh1, Cl2] and [Cl1, Rh2, Cl2] is 116.9(7)° and is thus slightly smaller (ca. 6°) than in the related compound [{Rh(η 4 -C 8 H 12 )}{Rh[P(OC 6 H 5 ) 3 ] 2 }(μ-Cl) 2 ] .…”

Section: Resultsmentioning

confidence: 94%

Organometallic Rhodium Complexes Containing Peralkylated Arsino(phosphino)methanes as Ligands

et al. 1998

View full text Add to dashboard Cite

show abstract

“…Intramolecular distances are as expected. The mean Rh-P, P-O, O-C and benzene C-C bond lengths are respectively 2-18 (1), 1.59 (1), 1.44 (1) and 1.41 (2) (Coetzer & Gafner, 1970). The closest intermolecular approach distance is 3.28 ,~, between C(12) and O(11), the parent molecules of which are related by an inversion centre.…”

Section: ~ 5°mentioning

confidence: 91%

The crystal structure of bis(trimethylphosphite)tetraphenylboronrhodium(I)

Nolte¹,

Garner²

1974

Acta Crystallogr Sect B

View full text Add to dashboard Cite

“…This was despite the fact that, within a given compound, Rh-C distances for the two types of olefin group differed, that there was a marked change in the Rh-0 bond lengths, and that there was a change in geometry from pseudo-trigonal bipyramidal to pseudo-square planar. It was quite clear, after examining a number of structures (2,3,(16)(17)(18)(19)(20), that Rh-C distances were almost insensitive to geometry and could be predicted entirely on the basis of whether electron-withdrawing groups (e.g. F or C0,Me) were attached to the olefin or not.…”

Section: Discussionmentioning

confidence: 99%

The Crystal and Molecular Structure of Pentane-2,4-dionato-(2,3,5,6-tetrahepto-2,3-dicarbomethoxo[2.2.1]bicycloheptadiene)rhodium(I), Rh(C₅H₇O₂) (C₇H₆(CO₂CH₃)₂)

Allen¹,

Lock²,

Turner³

et al. 1975

Can. J. Chem.

View full text Add to dashboard Cite

Chem. 53,2707Chem. 53, (1975. The crystal and molecular structures of pentane-2,4-dionato-(2,3,5,6-tetrahapto-2,3-dicarbomethoxo[2.2.~]bicycloheptadienerhodium~, Rh(C5J3702)(C7H6(C02CH3)2), have been measured by single crystal X-ray diffraction. The orange crystals are monoclinic, space group P2'/c, Z = 4, a = 9.245(4), b = 9.003(4), c = 21.680(15) A, = 113.41(5)". The calculated and observed densities are 1.645 and 1.642(5) respectively. Intensity data were collected on a Syntex P I diffractometer and a full matrix least squares refinement on 3010 observed reflections leads to a conventional R = 0.0660. The structure can be considered as a roughly square planar arrangement of ligands around the rhodium atom composed of two a-ketoenolate oxygen atoms (Rh-0, 2.037(5) and 2.025(5) A) and the centers of the two ethylenic groups. The Rh-C distances for the olefin group attached to the two carbomethoxo groups, 2.117(8), 2.108(8) A, appear to be slightly larger than those for the other olefinic group, 2.087(7), 2.082(6), and the corresponding C=C distances of 1.375 (10) . On a recueilli les donnks dYintensit6 avec un diffractometre Syntex P I et la structure affinCe par la m6thode des moindres carres (matrice complete) pour 3010 r6flexions observks a conduit a une valeur de R conventionnelle de 0.0660. On ~e u t consid6rer aue la structure com~orte en premiere approximation un arrangement plan carr6 des ligands autour deI 'atome de rhodium; cet arrangement comporte deux atomes d'oxygene du a-ckto6nolate (Rh-0,2.037(5) et 2.025(5) A) et le centre de deux groupes BthylCniques. I1 semble que les distances Rh-C (2.117(8) et 2.108(8) A) du groupe olkfinique attach6 aux deux groupes carbom6thoxo sont 16gerement plus larges que celles (2.087(7) et 2.082(6) A) de l'autre groupe ol6finique. Les distances C=C correspondantes,

show abstract

The crystal structure of di-μ-chloro-bis(triphenylphosphite)(cycloocta-1,5-diene)dirhodium(I)

Cited by 41 publications

References 3 publications

Organometallic Rhodium Complexes Containing Peralkylated Arsino(phosphino)methanes as Ligands

Organometallic Rhodium Complexes Containing Peralkylated Arsino(phosphino)methanes as Ligands

The crystal structure of bis(trimethylphosphite)tetraphenylboronrhodium(I)

The Crystal and Molecular Structure of Pentane-2,4-dionato-(2,3,5,6-tetrahepto-2,3-dicarbomethoxo[2.2.1]bicycloheptadiene)rhodium(I), Rh(C₅H₇O₂) (C₇H₆(CO₂CH₃)₂)

Contact Info

Product

Resources

About

The crystal structure of di-μ-chloro-bis(triphenylphosphite)(cycloocta-1,5-diene)dirhodium(I)

Cited by 41 publications

References 3 publications

Organometallic Rhodium Complexes Containing Peralkylated Arsino(phosphino)methanes as Ligands

Organometallic Rhodium Complexes Containing Peralkylated Arsino(phosphino)methanes as Ligands

The crystal structure of bis(trimethylphosphite)tetraphenylboronrhodium(I)

The Crystal and Molecular Structure of Pentane-2,4-dionato-(2,3,5,6-tetrahepto-2,3-dicarbomethoxo[2.2.1]bicycloheptadiene)rhodium(I), Rh(C5H7O2) (C7H6(CO2CH3)2)

Contact Info

Product

Resources

About

The Crystal and Molecular Structure of Pentane-2,4-dionato-(2,3,5,6-tetrahepto-2,3-dicarbomethoxo[2.2.1]bicycloheptadiene)rhodium(I), Rh(C₅H₇O₂) (C₇H₆(CO₂CH₃)₂)