2003
DOI: 10.1107/s0108270103010370
|View full text |Cite
|
Sign up to set email alerts
|

[cis-{η2-(Ph3PAu)2}Ph3PCr(CO)4]·THF, featuring the shortest known separation between two Au metal centres in a heteronuclear Au2Mcluster

Abstract: The title compound, tetracarbonyl-1kappa(4)C-tris(triphenylphosphino)-1kappaP,2kappaP,3kappaP-triangulo-chromiumdigold(Au-Au)(2 Cr-Au) tetrahydrofuran solvate, [Au(2)Cr(C(18)H(15)P)(3)(CO)(4)].C(4)H(8)O, is a stable isolobal analogue of the extremely labile [(eta(2)-H(2))CrL(n-1)] molecular hydrogen complex (n = 6; L is a neutral ligand, e.g. CO or PPh(3)), and features the shortest known separation [2.6937 (2) A] between two Au atoms in a triangular heteronuclear metal-cluster framework.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1

Citation Types

0
9
0
2

Year Published

2004
2004
2013
2013

Publication Types

Select...
5
1

Relationship

0
6

Authors

Journals

citations
Cited by 12 publications
(11 citation statements)
references
References 8 publications
(11 reference statements)
0
9
0
2
Order By: Relevance
“…To date, apart in elemental gold,2 the zero oxidation state has been mentioned in mixed gold(0)/gold(I) complexes of the general formula [(LAu) n ] m + , m X − as exemplified by the classical [(Ph 3 PAu) 6 ] 2+ 2(BF 4 − )3a and [( t Bu 3 PAu) 4 ] 2+ 2(BF 4 − ),3b and the recently reported {[(NHC)Au] 3 } + (TfO) − complex 4. There are also a few examples of multinuclear mixed‐metal clusters,5 such as [ cis ‐η 2 ‐{(Ph 3 P)AuAu(PPh 3 )}Ph 3 PCr(CO) 4 ],6 in which the Au atom can be considered to have an oxidation state of zero. However, mononuclear (L n Au), binuclear (LAuAuL), and polynuclear [(LAu) n ] neutral complexes in which atoms of gold are coordinated end‐on by L ligands have never been isolated 7.…”
Section: Methodsmentioning
confidence: 96%
“…To date, apart in elemental gold,2 the zero oxidation state has been mentioned in mixed gold(0)/gold(I) complexes of the general formula [(LAu) n ] m + , m X − as exemplified by the classical [(Ph 3 PAu) 6 ] 2+ 2(BF 4 − )3a and [( t Bu 3 PAu) 4 ] 2+ 2(BF 4 − ),3b and the recently reported {[(NHC)Au] 3 } + (TfO) − complex 4. There are also a few examples of multinuclear mixed‐metal clusters,5 such as [ cis ‐η 2 ‐{(Ph 3 P)AuAu(PPh 3 )}Ph 3 PCr(CO) 4 ],6 in which the Au atom can be considered to have an oxidation state of zero. However, mononuclear (L n Au), binuclear (LAuAuL), and polynuclear [(LAu) n ] neutral complexes in which atoms of gold are coordinated end‐on by L ligands have never been isolated 7.…”
Section: Methodsmentioning
confidence: 96%
“…B. [ cis‐ η 2 ‐{(Ph 3 P)Au‐Au(PPh 3 )}Ph 3 PCr(CO) 4 ],6 in denen dem Goldatom die Oxidationszahl 0 zugeschrieben werden kann. Einkernige [L n Au]‐, zweikernige [LAu‐AuL]‐ und mehrkernige [(LAu) n ]‐Neutralkomplexe, in denen die Goldatome “end on” an die Liganden L gebunden sind, wurden bisher hingegen nicht isoliert 7.…”
Section: Methodsunclassified
“…The calculated MP2‐level Au Mulliken charges for these complexes were nearly zero, which suggests the Au atom has an oxidation state of zero (Au 0 ). Another approximate example of such an “H 2 ” species is the gold–indium compound of Gabbaï et al192 The observed AuAu distance of 269.4 pm in the {CrAu 2 } triangle of [ Cis ‐η 2 ‐(Ph 3 PAu) 2 Ph 3 PCr(CO) 4 ]⋅THF could be regarded as a side‐on bonded “H 2 ” species or as the shortest known aurophilic bond 193…”
Section: Further Aspectsmentioning
confidence: 99%