English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

On reaction of disecondary methylenebisphosphanes H (R)P-CH2-P(R)H and H(tBu)P-CH 2 -P(R)H(R = Ph, 2,4,6-R' 3 C 6 H 2 , R' = Me, Et, iPr, tBu) with excess Fe 2 (CO) 9 , Ru 3 (CO) 12  and Os 3 (CO) 12  the hydrido clusters M 3 (CO) 9 (μ 2 -H )[μ 2 -P(R, tBu)-CH 2 -P(R,tBu)H] (M = Fe, Ru, Os) (3a -3j) are formed in addition to bimetallic phosphido com plexes (5a -5g) and clusters (4a - 4f) with [μ 2 -P(R,tBu)] 2 CH 2  bridges. At higher temperatures cleavage of the P-C-P skeleton in 3a, 3b, 3d and 3h is accompanied by activation of the terminal C-H bonds of ortho-substituents R' (Et, iPr, tBu), phosphinidene clusters (8a, 8b, 8d and 8e) containing 2,3-dihydrobenzo[b]phosphole ligands being formed. Cluster com pounds Fe 3 (CO) 9 [μ 3 -P(R, tBu)][MeP(H)R] (7a - 7c) with secondary phosphane ligands could be identified as intermediate products. The X-ray structural analysis of Fe 3 (CO) 8 (μ 2 -H) 2 L(L = 1,3,3-trirnethyl-6,8-di-tert-butyl-2,3-dihydrobenzo[b]phosphole) (8e) shows a trigonal pyramidal Fe 3 P skeleton with the 2,3-dihydrobenzo[b]phosphole ligand in axial position. Metal-assisted fragmentation of the methylenebisphosphanes H(R )P-CH 2 -P(R)H(1f, 1g) with less bulky aromatic substituents (R = Ph, 2,4,6-Me 3 C 6 H 2 ) affords bis-μ 3 -phosphinidene clusters Fe 3 (CO) 9 (μ 3 -PR)(μ 3 -PR') 11e (R = R' = 2,4,6-Me 3 C 6 H 2 ) or 11f (R' = Ph, R = Me) and the phosphaalkene cluster Fe 3 (CO) 9 (μ 3 -PPh)(μ 3 , η 2 -P(Ph)=CH 2 ) (13b), respectively. If 1g is treated with Fe 2 (CO) 9  in an 1:2 molar ratio at elevated temperatures cleavage of the P-C-P skeleton leads to 14, a bimetallic complex with different phosphido bridges [μ 2 -P(R )H and μ 2 -P(R)Me]

zeitschrift für naturforschung b

Lineare oligophosphaalkane, xxvii [1] fragmentierung und zyklisierun^ disekundarer methylenbisphosphane mit sperrigen aromatischen resten in fe 3 - und ru 3 -clustern linear oligophosphaalkanes, xxvii [1] fragmentation and cyclization of disecondary methylenebisphosphanes with bulky aromatic substituents in fe 3  and ru 3  clusters