On the coordination chemistry of corannulene, the smallest “buckybowl”

Coordination chemistry of an asymmetric P,N,O tridentate ligand containing primary phosphine, amine and alcohol donors

“…The CO resonances in the 13 C{ 1 H} NMR spectrum of 3 are seen as three separate doublets at 185.7 ( 2 J CeP ¼ 10.4 Hz), 185.6 ( 2 J CeP ¼ 58.9 Hz) and 183.9 ( 2 J CeP ¼ 6.9 Hz) ppm. The signal with the large coupling constant is assigned to the carbonyl trans to the P-donor in accordance with the similar system {2-(CH 3 CO)-C 4 H 3 N} Re(PPh 3 )(CO) 3 where a value of 55.5 Hz is observed for the trans 2 J CeP coupling [20]. …”

“…The precursors to S-PNO and R,S-S-P iPr NO were prepared as described by Burgess et al [2]. Fac-[Cr(CO) 3 6 [4] and LiP(SiMe 3 ) 2 [5] were prepared by literature methods.…”

“…Reaction of S-PNO with appropriate metal precursors led to the isolation of the complexes fac-Cr(CO) 3 4 were unsuccessful due to loss of PAr 3 F prior to any ringclosure. All the complexes have been fully characterised by spectroscopic and analytical techniques including a single-crystal X-ray structure analysis of 2.…”

Probing the binding sites and coordination limits of buckybowls in a solvent-free environment: Experimental and theoretical assessment

“…Interestingly, the above iridium cation showed no reactivity toward the C 60 -fullerene. Generally, many attempts to isolate corannulene complexes with metal units that show high reactivity toward the C 60 -fullerene or planar aromatic hydrocarbons have been unsuccessful [16,17], illustrating the striking difference in their metal coordination preferences. Plus, the lability of corannulene complexes in solution may have hindered the early crystallization attempts.…”

Reactions of Dilithium Dibenzopentalenides with Cr(CO)3(CH3CN)3: Unexpected Formation of a Cubic Tetramer of an Anionic Hydrodibenzopentalenyl Complex

“…[16] The solid-state structure of 2a was established by X-ray diffraction analysis ( Figure S1); [17] the structure is similar to that of 2b whichhas bulkierSiiPr 3 groups. [18] With two types of dilithium dibenzopentalenides in hand, we examined their reactivity towardC r(CO) 3 (CH 3 CN) 3 [19] Scheme1.Various coordination modes of pentalenyl complexeswith transition-or rare-earth metals and the first example of ad ibenzopentalenyl complex.…”