Hetero-metallomacrocyclic hosts that bind molecular guests in water

Self‐Assembled, Kinetically Locked, RuII‐Based Metallomacrocycles: Physical, Structural, and Modeling Studies

“…[10] However, in this case, the recognition process has no effect on the emission properties of the macrocycles.…”

“…2,2':4,4'':4',4''-Quarterpyridyl (qtpy), [11] [Ru(bpy) 2 (qtpy)](PF 6 ) 2 , [12] [1]-(PF 6 ) 8 , [2](PF 6 ) 4 , [10] and [Pt(en)Cl 2 ] [13] were all synthesized by means of adapted published procedures.…”

“…[10] We now report further on the properties of 1 and 2, and a newly synthesized Pt II analogue (3), self-assembled by using [Pt(en)Cl 2 ] [13] as the assembler. The X-ray structural data obtained on 2 has also allowed us to carry out density function theory (DFT) calculations on the energetics of this system.…”

“…We recently reported on the electron-transfer properties of a triangular, kinetically robust, Ru III/II mixedvalence bowl produced by this methodology. [8] In another approach to such architectures, we have used kinetically locked mononuclear Ru II complexes containing suitable ligands such as 2,2':4,4'':4',4'''-quarterpyridyl (qtpy) as building blocks in a "complex as ligand" methodology [9] to yield heterometallomacrocycles [10] such as 1 8 + and 2 4 + . Here the assembler is another metal center with an established templating function.…”

Synthesis of palladium and platinum donor complexes and study of their participation in self-assembly reactions. X-ray crystal structure of [Pt(C6H4CCC5H4N)2(dppp)] (dppp=1,3-bis(diphenylphosphino)propane)

“…As a result, there are far fewer palladium or platinumcontaining heterobimetallic molecular squares than homometallic ones. To our knowledge, only a small number of compounds have been used in the preparation of the desired heterobimetallic metallacycles: [Pt(C 6 H 4 CN) 2 (dppp)], [Pt(C"CC 5 H 4 N) 2 (L)] (L = dppp, DIOP) [4], [Ti(g-C 5 H 5 )(O 2 CC 5 H 4 N) 2 ] [5], [Ru-(pyterpy) 2 (PF 6 ) 2 ] [6], fac-[ReCl(CO) 3 (N-N) 2 ] [7], [Ru(2,2 0 -bipy) 2 (N-N)]Cl 2 [8], trans-[PtI 2 (CNC 6 H 2 -(i-Pr) 2 -2,6-(C"CC 5 H 4 N-4)-4) 2 ] [9] and cis-[Re 2 Cl 2 -(l-dppm) 2 (l-O 2 CC 5 H 4 N) 2 ] [10]. Interestingly, the obtention of other heterobimetallic square molecular compounds following related strategies has been reported [11].…”