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  • Chemistry/Pharmacy  (21)
  • VA 4072.5  (21)
  • 1
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    Chiral Substitution on Spaced Cations Lead to Improved Properties and Reversible Phase Transition, Broadband Emission in Parent Compound (3APr)PbBr 4
    Wiley ; 2023
    In:  European Journal of Inorganic Chemistry
    Details
    In: European Journal of Inorganic Chemistry, Wiley
    Abstract: Hybrid organic‐inorganic perovskites (HOIP) due to their excellent optoelectronic properties and flexible structure have attracted enthusiastic interest. In particular, introducing chirality is a method to enhance compound performance. Herein, we report a multifunctional compound: (3APr)PbBr 4 ( 1 ) (3APr=3‐Pyrrolidinamine) and corresponding enantiomer R and S‐(3APr)PbBr 4 ( R/S‐2 ). Compound 1 show reversible solid‐state phase transition, step‐like dielectric anomaly and broadband yellow emission under uv light excitation. Accompany with phase transition, structure dimension transition from 2D to 1D without space group change. Through introduce chirality, the R/S‐2 display mirror image 1D structural relationship, increased quantum yield from 3.43 % ( 1 ) to 13.65 % ( R/S‐2 ) and exhibits corresponding CD signals. Then combine to first‐principles analysis, it was found that fluorescence is attributed to the formation of instantaneous defects during excitation, leading to the formation of self‐trapped excitons (STEs). This finding will further promote the development of multifunctional compound and the study of chiral substitution enhance compound properties.
    Type of Medium: Online Resource
    ISSN: 1434-1948 , 1099-0682
    URL: Article
    DOI: 10.1002/ejic.202300476
    RVK:
    VA 4072.5
    Language: English
    Publisher: Wiley
    Publication Date: 2023
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  • 2
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    Post‐Functionalization of an Anderson‐Type Polyoxomolybdate Using a Metal‐Free Diels–Alder Click Reaction
    Wiley ; 2013
    In:  European Journal of Inorganic Chemistry Vol. 2013, No. 8 ( 2013-03-11), p. 1381-1389
    Details
    In: European Journal of Inorganic Chemistry, Wiley, Vol. 2013, No. 8 ( 2013-03-11), p. 1381-1389
    Abstract: Functionalization and post‐functionalization of polyoxometalates (POMs) by organic groups or biological moieties can provide versatile platforms for creating novel functional hybrids with synergetic properties. Such materials can easily be envisioned as having many advanced applications in biology and materials science. Nowadays, the organic groups or biological moieties used for conjugation with POMs, can readily become increasingly complicated in terms of structure, size and properties. Accordingly, a major challenge lies in the development of efficient conjugation methods. In this work, we report our application of metal‐free Diels–Alder click reactions under mild conditions to covalently link an Anderson‐type polyoxomolybdate with some organic groups or biological moieties possessing complex structures or different properties. High coupling efficiencies and facile purification methods guarantee 〉 90 % yields. Clearly, this is an ideal methodology for the synthesis of the post‐functionalized POM hybrids. With this technology now in hand, finding valuable applications for such post‐functionalized POM hybrids will be a highly significant focus of future investigations.
    Type of Medium: Online Resource
    ISSN: 1434-1948 , 1099-0682
    URL: Issue
    URL: Article
    DOI: 10.1002/ejic.v2013.8
    DOI: 10.1002/ejic.201201399
    RVK:
    VA 4072.5
    Language: English
    Publisher: Wiley
    Publication Date: 2013
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  • 3
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    New Examples of Metal Coordination Architectures of 4,4′‐Sulfonyldibenzoic Acid: Syntheses, Crystal Structure and Luminescence
    Wiley ; 2008
    In:  European Journal of Inorganic Chemistry Vol. 2008, No. 2 ( 2008-01), p. 239-250
    Details
    In: European Journal of Inorganic Chemistry, Wiley, Vol. 2008, No. 2 ( 2008-01), p. 239-250
    Abstract: Seven metal–organic coordination polymers, namely [Cd(sfdb)(phen) 2 ] n · 2 n H 2 O ( 1 ), [Cd(sfdb)(bpy) 2 ] n · n H 2 O ( 2 ), [Cu(sfdb)(phen)(H 2 O)] n · 0.5 n H 2 O ( 3 ), [Zn(sfdb)(bpy)(H 2 O)] n · 0.5 n CH 3 OH ( 4 ), [Cd(sfdb)(quin)] n ( 5 ), [Cd 3 (sfdb) 2 (Hsfdb) 2 (phen) 2 ] n ( 6 ), and [Cd(sfdb)(bpy)] n ( 7 ) [H 2 sfdb = 4,4′‐sulfonyldibenzoic acid, phen = 1,10‐phenanthroline, quin = 2,2′‐biquinoline, bpy = 2,2′‐bipyridine] have been synthesized according to the principles of crystal engineering and structurally characterized by elemental analysis, IR spectroscopy, and single‐crystal X‐ray diffraction analyses. Compounds 1 – 3 form 1D zigzag chains. Two phen ligands chelate to one cadmium atom in 1 , which is rare in similar polymers, while two 2,2′‐bpy ligands coordinate one cadmium atom in 2 . The zigzag chains in 3 propagate in two different directions (rotated by 75°) that are assembled by supramolecular forces into an intriguing three‐dimensional network. Complexes 4 and 5 form square‐wave‐like 1D chains, although the results indicate a transformation of 2,2′‐bpy into quin during the course of the hydrothermal synthesis of compound 5 . Compound 6 is a 1D grid‐chain based on a linear trinuclear unit, and compound 7 shows a 1D double chain containing 28‐membered rings with sfdb 2– ligands as bridges. Weak hydrogen bonding and intra‐ and/or intermolecular π ··· π stacking contacts in compounds 3 – 7 link the discrete 1D chains into high‐dimensional supramolecular structures. The sfdb 2– ligand displays multiple coordination modes in these seven complexes. Complexes 1 , 2 , and 4 – 7 show blue photoluminescence at room temperature. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
    Type of Medium: Online Resource
    ISSN: 1434-1948 , 1099-0682
    URL: Issue
    URL: Article
    DOI: 10.1002/ejic.v2008:2
    DOI: 10.1002/ejic.200700651
    RVK:
    VA 4072.5
    Language: English
    Publisher: Wiley
    Publication Date: 2008
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  • 4
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    Versatile Reaction Patterns of Phosphanylhydrosilylalkyne with B(C 6 F 5 ) 3 : A Remarkable Group Substitution Effect
    Wiley ; 2020
    In:  European Journal of Inorganic Chemistry Vol. 2020, No. 36 ( 2020-09-30), p. 3496-3506
    Details
    In: European Journal of Inorganic Chemistry, Wiley, Vol. 2020, No. 36 ( 2020-09-30), p. 3496-3506
    Abstract: Phosphanylhydrosilylalkynes R 2 HSiCCPAr 2 (R,Ar: Me,4‐ t BuC 6 H 4 1 , Me,Mes 2 , Mes,Ph 3 ; Mes = 2,4,6‐Me 3 C 6 H 2 ) were prepared and the reactions with B(C 6 F 5 ) 3 were studied. Reaction of 1 and B(C 6 F 5 ) 3 produced E ‐alkene {( E )‐(C 6 F 5 ) 3 BCHC[P(4‐ t BuC 6 H 4 ) 2 ]SiMe 2 } 2 ( 4 ) and that of 2 and B(C 6 F 5 ) 3 yielded Z ‐alkene ( Z )‐(C 6 F 5 ) 2 BCHC(PMes 2 )SiMe 2 (C 6 F 5 ) ( 5 ). The former is proposed to go through a key [Me 2 HSi] + for function while the latter via the phosphacyclopropene intermediate, both of which are a result by self‐hydrosilylation. Reaction of 3 and B(C 6 F 5 ) 3 generated at room temperature a P→B coordination compound Mes 2 HSiCCP(Ph 2 )B(C 6 F 5 ) 3 ( 6 ) and at 100 °C the 1,1‐carboboration E ‐alkene ( E )‐Mes 2 HSi(Ph 2 P)CC(C 6 F 5 )B(C 6 F 5 ) 2 ( 7 ). Kinetic study and DFT calculations were accomplished for reaction of 2 and B(C 6 F 5 ) 3 to 5 . The mechanisms of these reactions have been discussed. The reactions of the P/Si + LPs Me 2 Si(Ph 2 P)CCHB(C 6 F 5 ) 3 } 2 ( 3a ) and 4 were also investigated. Compound 4 disassociated H 2 O into {( E )‐(C 6 F 5 ) 3 BCHC[PH‐4‐ t BuC 6 H 4 ) 2 ]Si(Me 2 )} 2 ( µ ‐O) ( 8 ) and ( E )‐(C 6 F 5 ) 3 BCHC[PH(4‐ t Bu‐C 6 H 4 ) 2 ]Si(Me 2 )O(HNC 5 H 5 ) ( 9 ). Compound 3a reacted with t BuNCO by [3+2] dipolar cycloaddition to give a C 2 OPSi‐heterocycle [(C 6 F 5 ) 3 BHC]CSi(Me 2 )P(Ph 2 )OC(N t Bu) ( 10 ). Furthermore, 4 reacted with t BuNCO and then H 2 O to afford ( E )‐(F 5 C 6 ) 3 BHCC[P(4‐ t BuC 6 H 4 ) 2 C(O)NH t Bu][Si(Me 2 )OH(NC 5 H 5 )] ( 11 ) through a C 2 OPSi‐heterocycle intermediate followed by the H 2 O‐disassociation under the C 2 OPSi‐ring opening.
    Type of Medium: Online Resource
    ISSN: 1434-1948 , 1099-0682
    URL: Issue
    URL: Article
    DOI: 10.1002/ejic.v2020.36
    DOI: 10.1002/ejic.202000506
    RVK:
    VA 4072.5
    Language: English
    Publisher: Wiley
    Publication Date: 2020
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  • 5
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    Two Discrete Ln 12 Shelf‐Shaped Clusters: Magnetic Studies Reveal a Significant Cryogenic Magnetocaloric Effect and Slow Magnetic Relaxation
    Wiley ; 2016
    In:  European Journal of Inorganic Chemistry Vol. 2016, No. 31 ( 2016-11), p. 4996-5003
    Details
    In: European Journal of Inorganic Chemistry, Wiley, Vol. 2016, No. 31 ( 2016-11), p. 4996-5003
    Abstract: Two unique dodecanuclear lanthanide clusters, [Ln III 12 Na 3 (µ 3 ‐OH) 2 (hmmp) 6 (piv) 12 (CO 3 ) 6 (MeOH) 6 ]OH · 5MeOH {Ln = Gd 3+ , Dy 3+ ; hmmpH 2 = 2‐[(2‐hydroxyethylimino)methyl]‐6‐methoxyphenol}, have been synthesized by treating the simple Schiff‐base ligand hmmpH 2 with the relevant lanthanide chloride and sodium pivalate (NaPiv). Single‐crystal X‐ray diffraction analysis revealed that the central cores of Gd 12 and Dy 12 are unprecedented and composed of a distorted four‐layer triangular shelf‐like molecular structure, which can be broken down into two types of four parallel triangular layers with an ABBA arrangement. Magnetic investigations revealed that the Gd 12 cluster is a good candidate for magnetic refrigeration with a significant entropy change (–Δ S m ) of 30.99 J kg –1  K –1 for H = 7 T at 4 K, whereas the Dy 12 cluster shows single‐molecule magnet behavior.
    Type of Medium: Online Resource
    ISSN: 1434-1948 , 1099-0682
    URL: Issue
    URL: Article
    DOI: 10.1002/ejic.v2016.31
    DOI: 10.1002/ejic.201600556
    RVK:
    VA 4072.5
    Language: English
    Publisher: Wiley
    Publication Date: 2016
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  • 6
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    Topological Evolution in Mercury(II) Schiff Base Complexes Tuned through Alkyl Substitution – Synthesis, Solid‐State Structures, and Aggregation‐Induced Emission Properties
    Wiley ; 2016
    In:  European Journal of Inorganic Chemistry Vol. 2016, No. 22 ( 2016-08), p. 3598-3610
    Details
    In: European Journal of Inorganic Chemistry, Wiley, Vol. 2016, No. 22 ( 2016-08), p. 3598-3610
    Abstract: From two series of Schiff base ligands, ( E )‐ N ‐(pyridine‐2‐yl)(CMe=NPhR) and ( E )‐ N ‐(pyridine‐2‐yl)(CH=NPhR) [R = H, L1a , L1b ; 2‐CH 3 , L2a , L2b ; 4‐CH 3 , L3a , L3b ; 2,6‐(CH 3 ) 2 , L4a , L4b ; 2,6‐(C 2 H 5 ) 2 , L5a , L5b ; 2,6‐( i ‐C 3 H 7 ) 2 , L6a , L6b ; 2,4,6‐(CH 3 ) 3 , L7a , L7b ], fourteen mercury(II) complexes, namely, Hg 1a –Hg 7a and Hg 1b –Hg 7b were synthesized. Their structures were established by single‐crystal X‐ray diffraction, and they were physically characterized by 1 H and 13 C NMR spectroscopy, ESI‐MS, FTIR spectroscopy, elemental analysis (EA), and powder XRD (PXRD). The crystal structures indicate that the position and type of substituent can directly influence the formation of 1D → 3D supramolecular metal–organic frameworks through C–H ··· Cl and π–π interactions. Complexes Hg 1a –Hg 7a and Hg 1b –Hg 7b display deep blue emissions at λ = 401–428 nm in acetonitrile solution and light blue emissions at λ = 443–494 nm in the solid state. It is worth noting that Hg 1a , Hg 3a , Hg 1b , and Hg 3b exhibit good aggregation‐induced emission (AIE) properties in CH 3 CN/H 2 O solutions.
    Type of Medium: Online Resource
    ISSN: 1434-1948 , 1099-0682
    URL: Issue
    URL: Article
    DOI: 10.1002/ejic.v2016.22
    DOI: 10.1002/ejic.201600231
    RVK:
    VA 4072.5
    Language: English
    Publisher: Wiley
    Publication Date: 2016
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  • 7
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    Theoretical Study on a Class of Organometallic Complexes Based on All‐Metal Aromatic Ga 3 – Through Sandwiching Stabilization
    Wiley ; 2008
    In:  European Journal of Inorganic Chemistry Vol. 2008, No. 12 ( 2008-04), p. 2099-2106
    Details
    In: European Journal of Inorganic Chemistry, Wiley, Vol. 2008, No. 12 ( 2008-04), p. 2099-2106
    Abstract: We report the theoretical study on a class of organometallic complexes containing the all‐metal aromatic unit Ga 3 – on the basis of density functional theory calculations on a series of model sandwich‐like compounds [DM(Ga 3 )] q – as well as those of the saturated compounds [DM n (Ga 3 )] [D = Ga 3 – , Cp – (C 5 H 5 – ); M = Li, Na, K, Be, Mg, Ca] and extended compounds (Cp – ) m (Li + ) n (Ga 3 – ) o ( m , n , and o are integers). For the six metals, the all‐metal aromatic Ga 3 – can only be assembled and stabilized in the “ heterodecked sandwich ” scheme (e.g. [CpM(Ga 3 )] q – ) so as to avoid cluster fusion. Moreover, we designed a novel class of all‐metal aromatic “metalloid” compounds. The ground state heterodecked sandwich species (Cp) – (M) q + (Ga 3 ) – (M = Li, Na, K, q = 1; M = Be, Mg, Ca, q = 2) and the extended sandwich species (Cp – ) m (Li + ) n (Ga 3 – ) o are mainly ionic bonded, cluster‐assembled “polyatomic molecule”, grown from the combination of Cp – , M atoms, and Ga 3 – . As a prototype for ionic bonding involving intact Ga 3 – subunits, [CpM(Ga 3 )] q – may be a stepping stone toward forming ionic, cluster‐assembled all‐metal aromatic Ga 3 ‐based bulk solids or materials. Additionally, our results for the first time showed that the electronic, structural, and aromatic properties of the all‐metal aromatic Ga 3 – could be well retained during cluster assembly, which is indicative of “building block” character. Bearing the significant difference in bonding patterns between our designed metalloid compounds and the known metalloid species, synthesis of these novel species might present an attractive challenge to experimental chemists. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
    Type of Medium: Online Resource
    ISSN: 1434-1948 , 1099-0682
    URL: Issue
    URL: Article
    DOI: 10.1002/ejic.v2008:12
    DOI: 10.1002/ejic.200800029
    RVK:
    VA 4072.5
    Language: English
    Publisher: Wiley
    Publication Date: 2008
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  • 8
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    Synthesis, Crystal Structure, and Magnetic Properties of a Three‐Dimensional Hydroxide Sulfate: Mn 5 (OH) 8 SO 4
    Wiley ; 2005
    In:  European Journal of Inorganic Chemistry Vol. 2005, No. 16 ( 2005-08), p. 3359-3364
    Details
    In: European Journal of Inorganic Chemistry, Wiley, Vol. 2005, No. 16 ( 2005-08), p. 3359-3364
    Abstract: A 3D hydroxysulfate, Mn 5 (OH) 8 SO 4 , formed from a mild hydrothermal reaction has been reported. The compound crystallizes in the triclinic system P $\tilde {1}$ with cell parameters a = 7.5501(5) Å, b = 8.5558(6) Å, c = 8.6059(5) Å, α = 98.122(4)°, β = 102.370(4)°, γ = 99.646(4)°, V = 526.19(6) Å 3 and Z = 2. The crystal structure consists of a 3D framework with channels along the c ‐axis. In this structure, the manganese atoms in the distorted pentahedra and octahedra are interconnected by OH groups to form layers along the bc plane. These layers are further connected with MnO 5 distorted pentahedra, MnO 6 octahedra and [SO4] 2– tetrahedra, resulting in a complicated network. The temperature dependence of the magnetic susceptibility shows a weak antiferromagnetic interaction in the compound. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
    Type of Medium: Online Resource
    ISSN: 1434-1948 , 1099-0682
    URL: Issue
    URL: Article
    DOI: 10.1002/ejic.v2005:16
    DOI: 10.1002/ejic.200500112
    RVK:
    VA 4072.5
    Language: English
    Publisher: Wiley
    Publication Date: 2005
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  • 9
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    Noncentrosymmetric Cubic CsCdBO 3 with Bichromophore
    Wiley ; 2013
    In:  European Journal of Inorganic Chemistry Vol. 2013, No. 32 ( 2013-11-04), p. 5528-5533
    Details
    In: European Journal of Inorganic Chemistry, Wiley, Vol. 2013, No. 32 ( 2013-11-04), p. 5528-5533
    Abstract: The noncentrosymmetric borate CsCdBO 3 was synthesized by a solid‐state reaction, and its structure was determined by single‐crystal X‐ray diffraction. The crystal structure is a complicated three‐dimensional network composed of CdO 6 octahedra, CsO 6 octahedra, and BO 3 triangles. Interestingly, CsCdBO 3 crystallizes in the cubic space group P 2 1 3, which is quite rare for borate‐containing anisotropic polarized planar BO 3 groups. Furthermore, the IR spectrum confirms the presence of BO 3 groups. Second harmonic generation (SHG) measurements on powder samples reveal that the SHG response of CsCdBO 3 is approximately 0.5 × KDP (KH 2 PO 4 ). Thermal analysis and UV/Vis/NIR diffuse reflectance spectroscopy data, as well as electronic band structure calculations, are also reported.
    Type of Medium: Online Resource
    ISSN: 1434-1948 , 1099-0682
    URL: Issue
    URL: Article
    DOI: 10.1002/ejic.v2013.32
    DOI: 10.1002/ejic.201301075
    RVK:
    VA 4072.5
    Language: English
    Publisher: Wiley
    Publication Date: 2013
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  • 10
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    Catalytic Cooperativity, Nuclearity, and O 2 /H 2 O 2 Specificity of Multi‐Copper(II) Complexes of Cyclen‐Tethered Cyclotriphosphazene Ligands in Aqueous Media
    Wiley ; 2017
    In:  European Journal of Inorganic Chemistry Vol. 2017, No. 42 ( 2017-11-16), p. 4899-4908
    Details
    In: European Journal of Inorganic Chemistry, Wiley, Vol. 2017, No. 42 ( 2017-11-16), p. 4899-4908
    Abstract: Three ligands L1 , L2 , and L3 with 2, 4, and 6 1,4,7,10‐tetraazacyclododecane (cyclen) moieties attached to a cyclotriphosphazene core, respectively, were synthesized, and oxidation activities of their Cu II complexes were investigated. Aerobic oxidation of catechol by these complexes follows an intramolecular dinuclear pathway with significant cooperativity (i.e., θ ≈ 1.5 out of a maximum of 2 for two potential substrate binding sites) and kinetic constants (i.e., k cat = 17.5 × 10 –3 s –1 , K m = 2.8 m m , and quite remarkable catalytic specificity k cat / K m 12.5 m –1  s –1 per di‐Cu center), while that by untethered Cu II –cyclen follows a bimolecular dinuclear pathway without noticeable cooperativity ( θ = 0.96) and fourfold lower k cat , despite their similar dinuclear mechanisms. The proximity of Cu II centers is suggested by EPR spectra and relaxations, showing a broad spectral component particularly in Cu 6 L3 . Thermodynamic parameters also indicate the significance of multi‐Cu II sites in the oxidative catalysis. Air is a more specific oxidation agent for the representative complex Cu 2 L1 , showing 3.2‐fold higher catalytic specificity k cat / K m than H 2 O 2 toward a catechol substrate. The research provides further molecular basis for future design of O 2 /H 2 O 2 ‐specific oxidation of multi‐domain Cu complexes.
    Type of Medium: Online Resource
    ISSN: 1434-1948 , 1099-0682
    URL: Issue
    URL: Article
    DOI: 10.1002/ejic.v2017.42
    DOI: 10.1002/ejic.201700811
    RVK:
    VA 4072.5
    Language: English
    Publisher: Wiley
    Publication Date: 2017
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