Solid-state syntheses of M–Cu–S (M=Mo and W) clusters, crystal structure and non-linear optical properties of {MS4[Cu(p-MeOC6H4)3P]2}·0.5C6H12

Zheng, He‐Gen; Zhou, Jinhua; Tan, Wei; Niu, Yun‐Yin; Ji, Wei; Xin, Xinquan

doi:10.1016/s0020-1693(02)01057-5

Cited by 9 publications

(4 citation statements)

References 23 publications

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“…There are mainly two types of linear-shaped skeleton clusters that have been studied for their NLO performances. The first type is constituted by three metal atoms as the skeleton of the elements, ,− and the second type has only two transition metal atoms in its skeleton. − For instance, clusters MoS 4 Cu 2 {PPh 2 (py)} 4 and MoS 4 (Cudppf) 2 2DMF·CH 3 CN (Figure ) exhibited strong optical absorption (α 2 = 1.2 × 10 –9 and 1.6 × 10 –9 m W –1 ) and optical self-defocusing effects ( n 2 = −6.84 × 10 –17 and −1.35 × 10 –17 m 2 W –1 ) . Their limiting thresholds ( F lim ) were determined to be, respectively, 0.35 and 0.65 J cm –2 and were about 4 and 2 times better than that of C60 …”

Section: Inorganic Materialsmentioning

confidence: 87%

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

2016

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The control of luminous radiation has extremely important implications for modern and future technologies as well as in medicine. In this Review, we detail chemical structures and their relevant photophysical features for various groups of materials, including organic dyes such as metalloporphyrins and metallophthalocyanines (and derivatives), other common organic materials, mixed metal complexes and clusters, fullerenes, dendrimeric nanocomposites, polymeric materials (organic and/or inorganic), inorganic semiconductors, and other nanoscopic materials, utilized or potentially useful for the realization of devices able to filter in a smart way an external radiation. The concept of smart is referred to the characteristic of those materials that are capable to filter the radiation in a dynamic way without the need of an ancillary system for the activation of the required transmission change. In particular, this Review gives emphasis to the nonlinear optical properties of photoactive materials for the function of optical power limiting. All known mechanisms of optical limiting have been analyzed and discussed for the different types of materials.

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Section: Inorganic Materialsmentioning

confidence: 87%

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

2016

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“…The tetrathiomolybdate unit, MoS 4 y – , has previously been shown to bridge multiple metal centers in transition metal complexes containing Cu, Fe, and Nb, which have primarily found interest in nonlinear optics and as models for the Fe–Mo cofactor in the enzyme nitrogenase. The compound [PPh 4 ][(C 5 Me 5 ) 2 Sm(μ-S) 2 Mo(μ-S) 2 Sm(C 5 Me 5 ) 2 ], which contains an S = 1 / 2 MoS 4 3– unit bridging two Sm III centers, has also been previously synthesized, demonstrating the ability of a MoS 4 y – unit to bridge two lanthanide(III) centers .…”

Section: Results and Discussionmentioning

confidence: 99%

Strong Ferromagnetic Exchange Coupling and Single-Molecule Magnetism in MoS₄³^–-Bridged Dilanthanide Complexes

et al. 2021

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We report the synthesis and characterization of the trinuclear 4d-4f compounds [Co(C5Me5)2][(C5Me5)2Ln(μ-S)2Mo(μ-S)2Ln(C5Me5)2], 1-Ln (Ln = Y, Gd, Tb, Dy), containing the highly polarizable MoS4 3− bridging unit. UV-Vis-NIR diffuse reflectance spectra and DFT calculations of 1-Ln reveal a low-energy metal-to-metal charge transition assigned to charge transfer from the singly-occupied 4dz 2 orbital of Mo V to the empty 5dz 2 orbital(s) of the lanthanide (4dz 2 in the case of 1-Y), mediated by sulfur-based 3p orbitals. Electron paramagnetic resonance spectra collected for 1-Y in a tetrahydrofuran solution show large 89 Y hyperfine coupling constants of A ⊥ = 23 MHz, and A|| = 26 MHz, indicating the presence of significant yttrium-localized unpaired electron density. Magnetic susceptibility data support similar electron delocalization and ferromagnetic Ln-Mo exchange for 1-Gd, 1-Tb, and 1-Dy. This ferromagnetic exchange gives rise to an S = 15/2 ground state for 1-Gd and one of the largest magnetic exchange constants involving Gd III observed to date, with JGd -Mo = +16.1(2) cm −1 . Additional characterization of 1-Tb and 1-Dy by ac magnetic susceptibility measurements reveals that both compounds exhibit slow magnetic relaxation. For 1-Dy, the extracted thermal relaxation barrier of Ueff = 68 cm −1 is the largest yet reported for a complex containing a paramagnetic 4d metal center. Together, these results provide a potentially generalizable route to enhanced nd-4f magnetic exchange, revealing opportunities for the design of new nd-4f singlemolecule magnets and bulk magnetic materials.[Co(C5Me5)2][(C5Me5)2Y(μ-S)2Mo(μ-S)2Y(C5Me5)2], 1-Y. To a stirred solution of (C5Me5)2Y(μ-S)2Mo(μ-S)2Y(C5Me5)2 (0.082 g, 0.087 mmol) in 6 mL of THF was added Co(C5Me5)2 (0.027 g, 0.

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“…The structures of N-heterocyclic adducts are well known; the structure of tetrapyridyltetra--sulfido-dicoppermolybdenum has been known for 15 years (Lin & Lin, 1986, 1991Hu, 1999;Ng & Rae, 1999), but phosphine adducts are less common. In the structure of a bis(tri-4-anisylphosphine) adduct in which the Cu atoms are coordinated by only one phosphine ligand, each of the Cu atoms is in a trigonal planar coordination environment (Zheng et al, 2002). The structures of some other phosphine adducts have Cu atoms which have two Cu-P bonds, e.g.…”

Section: Commentmentioning

confidence: 99%

Tetrakis(benzyldiphenylphosphine-κP)tetra-μ₂-sulfido-dicopper(I)molybdenum(VI) tetrahydrate

Niu

Yang

2006

Acta Cryst E

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Solid-state syntheses of M–Cu–S (M=Mo and W) clusters, crystal structure and non-linear optical properties of {MS4[Cu(p-MeOC6H4)3P]2}·0.5C6H12

Cited by 9 publications

References 23 publications

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

Strong Ferromagnetic Exchange Coupling and Single-Molecule Magnetism in MoS₄³^–-Bridged Dilanthanide Complexes

Tetrakis(benzyldiphenylphosphine-κP)tetra-μ₂-sulfido-dicopper(I)molybdenum(VI) tetrahydrate

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Solid-state syntheses of M–Cu–S (M=Mo and W) clusters, crystal structure and non-linear optical properties of {MS4[Cu(p-MeOC6H4)3P]2}·0.5C6H12

Cited by 9 publications

References 23 publications

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

Strong Ferromagnetic Exchange Coupling and Single-Molecule Magnetism in MoS43–-Bridged Dilanthanide Complexes

Tetrakis(benzyldiphenylphosphine-κP)tetra-μ2-sulfido-dicopper(I)molybdenum(VI) tetrahydrate

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Strong Ferromagnetic Exchange Coupling and Single-Molecule Magnetism in MoS₄³^–-Bridged Dilanthanide Complexes

Tetrakis(benzyldiphenylphosphine-κP)tetra-μ₂-sulfido-dicopper(I)molybdenum(VI) tetrahydrate