Lutetium phthalocyanine

Some poly(oxyethylene)-substituted lutetium phthalocyanine complexes ((9) Ln = Lu, R = 0(CH2CH20) CH3, n=l-4) were prepared, but only one compound was mesomorphic ( = 3), exhibiting a Cok phase between 53 °C and 58 The analogous compounds with... 

The poly(oxyethylene)-substituted lutetium phthalocyanine complex [(CH3(0CH2CH2)30)8Pc]2Lu exhibits a tetragonal colunmar phase (Col,) between 53 and 57.6 C (a = 26.7 A Toupance et al., 1996). The high-temperature XRD pattern consists of a series of Bragg reflections which correspond to reciprocal distances in the ratio 1 V2 V4 V8. Around 4.2 A, a halo due to the molten poly(oxyethylene) chains is observed both in the mesophase and in the isotropic liquid. The melting enthalpy is 1.6 J g and the clearing... 

Basova, T., Gurek, A., Ahsen, V. Ray, A. (2013). Electoochromic lutetium phthalocyanine films for in situ detection of NADH Optical Materials 35, 634-637. 

Luckhurst potential, dimers 816 luminance, guest-host effect 272 lutetium, phthalocyanine ligands 924 lyotropic blue phases, chromonics 998 lyotropic systems... 

Voloshin YZ, Varzatsldi OA, TomUova LG, Breusova MO, Magdesieva TV, Bubnov YN, Kramer R (2007) Eirst hybrid oximehydrazonate phthalocyaninoclath-rochelates the synthesis and properties of lutetium phthalocyanine-capped, cage iron(ll) complexes. Polyhedron 26 2733-2740... 

In the preparation of lutetium(III) 2,9,16,23-tetra-ter -butylbis(phthalocyanine) from lutetium(III) acetate, dilithium phthalocyanine and dilithium 2,9,16,23-tetra-terr-butyl-phthalocyaninc in refluxing 1 -chloronaphthalene for one hour, only one of the phthalocyanine moieties carries all of the substituents (yield 20%).185... 

Coordination compounds composed of tetrapyrrole macrocyclic ligands encompassing a large metal ion in a sandwich-like fashion have been known since 1936 when Linstead and co-workers (67) reported the first synthesis of Sn(IV) bis(phthalocyanine). Numerous homoleptic and heteroleptic sandwich-type or double-decker metal complexes with phthalocyanines (68-70) and porphyrins (71-75) have been studied and structurally characterized. The electrochromic properties of the lanthanide pc sandwich complexes (76) have been investigated and the stable radical bis(phthalocyaninato)lutetium has been found to be the first example of an intrinsic molecular semiconductor (77). In contrast to the wealth of literature describing porphyrin and pc sandwich complexes, re-... 

The composition may then be described as Ln (OEP) (OEP ). This is easily seen from the paramagnetism of Lu(0EP)2 which has the magnetic moment of a radical, i. e. 1,7 B. M, in the solid state (4) As lutetium ions other than diamagnetic fare not known, only a porphyrin radical state is left to explain the properties, A similar radical state has been found for another doubledecker molecule, lutetium bis(phthalocyaninate), Lu(Pc)2 which is hence to be described as Lu (Pc) (Pc ) (11,12). All the... 

The metallophthalocyanines which have found application as elecfiochromes are mainly the rare earth derivatives, especially lutetium, and second row fiansition metals such as zirconium and molybdenum. Synthesis of these molecules follows the fiaditional routes, e.g. condensation of 1,2-dicyanobenzene with a metal acetate in a high boiling solvent (see Chapter 2). These compounds have structures in which the rare earth element is sandwiched between two phthalocyanine rings, e.g. zirconium bisphthalocyanine (1.92 M = Zr) and lutetium bisphthalocyanine (192 M = Lu), the latter protonated on one of the meso N atoms to balance the charge. 

Novel ball-type four f-butyl-calix[4]arene bridged double deckers lutetium(III) phthalocyanine [LuPc2(tbca)4] 10 and indium(III) phthalocyanine [InPc2(tbca)4] 11 were prepared by the reaction of l,3-bis(3,4-dicyanophenoxy)-4-fe/t-butylcalix arene 9 and the corresponding metal salts (Lu(OAc)3 3H20 and InCl3) in the presence of lithium metal in 1-pentanol under N2 in a sealed tube for 15h, Fig. 3. Yields of 10 and 11 were 18 and 55%, respectively. 

Figure 4.37 The structure of Lu(Pc)2 [61a]. (Reprinted with permission from J. Fischer, R. Weiss, et al., Synthesis, structure, and spectroscopic and magnetic properties of lutetium(III) phthalocyanine derivatives L11PC2.CH2CI2 and [LuPc(0Ac)(H20)2].H20.2CH30H, Inorganic Chemistry, 24, no. 20, 3162-3167, 1985. 1985 American Chemical Society.)...

The free electron in both the unsubstituted and substituted bis(phthalocyaninato)lutetium(III) complexes is associated with the extensive u-system of the phthalocyanine macrocycles. The individual [PciLu] units can be considered nominally as [Lu Pc2 ]. There remains... 

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