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Chukwu JU, López C, González A, Font-Bardía M, Calvet MT, Messeguer R, Calvis C. Pd(II) complexes with N-substituted pyrazoles as ligands. The influence of the R group [OMe versus NMe2] of [1-{R–(CH2)2–}-3,5-Ph2–(C3HN2)] on their cytotoxic activity on breast cancer cell lines. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.04.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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2
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Begeç S, Alataş S, Kılıç A. Synthesis and Characterization of Novel Alkyl-Substituted Aryl Diphenylphosphinate Esters. PHOSPHORUS SULFUR 2011. [DOI: 10.1080/10426507.2010.521472] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Saliha Begeç
- a Department of Chemistry, Science and Arts Faculty , Inonu University , Malatya , Turkey
| | - Sümeyya Alataş
- a Department of Chemistry, Science and Arts Faculty , Inonu University , Malatya , Turkey
| | - Adem Kılıç
- b Department of Chemistry , Gebze Institute of Technology , Gebze , Kocaeli , Turkey
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3
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Chandrasekhar V, Senapati T, Dey A, Hossain S. Molecular transition-metal phosphonates. Dalton Trans 2011; 40:5394-418. [DOI: 10.1039/c0dt01069c] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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4
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Hamada A, Braunstein P. Lithium−Palladium Complex Supported by Phosphonatophosphine and Chloride Ligands. Inorg Chem 2008; 47:3934-6. [DOI: 10.1021/ic800355m] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Adel Hamada
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université Louis Pasteur, 4 rue Blaise Pascal, F-67070 Strasbourg Cédex, France
| | - Pierre Braunstein
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université Louis Pasteur, 4 rue Blaise Pascal, F-67070 Strasbourg Cédex, France
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Chandrasekhar V, Nagarajan L, Clérac R, Ghosh S, Verma S. A Distorted Cubic Tetranuclear Copper(II) Phosphonate Cage with a Double-Four-Ring-Type Core. Inorg Chem 2008; 47:1067-73. [DOI: 10.1021/ic701948g] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vadapalli Chandrasekhar
- Department of Chemistry, Indian Institute of TechnologyKanpur, Kanpur-208 016, India, and Centre de Recherche Paul Pascal, CNRS, UPR8641, Université Bordeaux 1, 115 avenue du Dr. A. Schweitzer, 33600 Pessac, France
| | - Loganathan Nagarajan
- Department of Chemistry, Indian Institute of TechnologyKanpur, Kanpur-208 016, India, and Centre de Recherche Paul Pascal, CNRS, UPR8641, Université Bordeaux 1, 115 avenue du Dr. A. Schweitzer, 33600 Pessac, France
| | - Rodolphe Clérac
- Department of Chemistry, Indian Institute of TechnologyKanpur, Kanpur-208 016, India, and Centre de Recherche Paul Pascal, CNRS, UPR8641, Université Bordeaux 1, 115 avenue du Dr. A. Schweitzer, 33600 Pessac, France
| | - Surajit Ghosh
- Department of Chemistry, Indian Institute of TechnologyKanpur, Kanpur-208 016, India, and Centre de Recherche Paul Pascal, CNRS, UPR8641, Université Bordeaux 1, 115 avenue du Dr. A. Schweitzer, 33600 Pessac, France
| | - Sandeep Verma
- Department of Chemistry, Indian Institute of TechnologyKanpur, Kanpur-208 016, India, and Centre de Recherche Paul Pascal, CNRS, UPR8641, Université Bordeaux 1, 115 avenue du Dr. A. Schweitzer, 33600 Pessac, France
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6
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Structural characterization of a thiazoline-pyrazole ligand and its complexes with cobalt(II) and copper(II). Polyhedron 2006. [DOI: 10.1016/j.poly.2005.09.028] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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7
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Montoya V, Pons J, Solans X, Font-bardia M, Ros J. Synthesis, spectroscopic properties and structural characterisation of Pd(II) and Pt(II) complexes with 1,3,5-pyrazole derived ligands. Rotation around the metal–N bond. Inorganica Chim Acta 2005. [DOI: 10.1016/j.ica.2004.12.060] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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8
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Mota AJ, Dedieu A, Kuhn P, Matt D, Welter R, Neuburger M. Can weak interactions modify the binding properties of a strong nitrogen donor? Unusual N-coordination of a phosphoranylidene-substituted pyrazolone unit towards palladium(ii) centres: an experimental and theoretical study. Dalton Trans 2005:3155-60. [PMID: 16172639 DOI: 10.1039/b506352n] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selective N(2)-binding of 3-methyl-1-phenyl-4-(triphenylphosphoranylidene)-2-pyrazolin-5-one (L) has been found in two palladium(II) complexes, [PdCl(2)L(2)](2) and [Pd(o-C(6)H(4)CH(2)NMe(2))Cl](3). X-Ray diffraction studies show that the pyrazole rings lie almost perpendicular to the coordination plane. In both complexes the metal atom is located out of the plane defined by the pyrazole ring(s)(dihedral angle between the plane and the Pd-N vector approximately 30 degrees). To investigate the origin of this distortion, a theoretical study was carried out on a simplified model of complex , where a single pyrazolone ligand was replaced by NH(3). From this study it could be inferred that the out-of-plane distortion mainly involves weak, electrostatic interactions between a chlorine atom and an ortho-aromatic H atom of the N(1)-linked phenyl group, as well as between the other chlorine atom and an ortho-aromatic H atom of the PPh(3) group.
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Affiliation(s)
- Antonio J Mota
- Laboratoire de Chimie Quantique, UMR 7551 CNRS, Université Louis Pasteur, 4 rue Blaise Pascal, 67070 Strasbourg, France
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Boixassa A, Pons J, Solans X, Font-Bardia M, Ros J. Synthesis and characterisation of pyrazolic palladium compounds containing alcohol functionality:. Inorganica Chim Acta 2004. [DOI: 10.1016/j.ica.2003.06.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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Reactivity of the ligand bis[2-(3,5-dimethyl-1-pyrazolyl)ethyl]ether (L1) with Pd(II) and Pt(II): crystal structure of cis-[PtCl2(L1)]. Inorganica Chim Acta 2004. [DOI: 10.1016/j.ica.2003.10.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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Chandrasekhar V, Krishnan V, Steiner A, Bickley JF. Cyclotriphosphazene Hydrazides as Efficient Multisite Coordination Ligands. η3-fac-non-geminal-N3 Coordination of spiro-N3P3[O2C12H8][N(Me)NH2]4 (L) in L2CoCl3 and L2M(NO3)2 (M = Ni, Zn, Cd). Inorg Chem 2003; 43:166-72. [PMID: 14704064 DOI: 10.1021/ic034561d] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The cyclophosphazene tetrahydrazide spiro-N(3)P(3)[O(2)C(12)H(8)][N(Me)NH(2)](4) (L) functions as a multisite coordination ligand and affords L(2)CoCl(3).2CH(3)OH (4), L(2)Ni(NO(3))(2).2CHCl(3).2.5H(2)O (5), L(2)Zn(NO(3))(2).2CH(3)CN.2H(2)O (6), and L(2)Cd(NO(3))(2) (7). Each of the cyclophosphazene ligands that is involved in coordination to the metal functions as a non-geminal-N(3) donor coordinating through one ring nitrogen atom and two non-geminal-NH(2) nitrogen atoms. The coordination geometry around the metal ion in 4-6 is approximately octahedral while it is severely distorted in the case of 7.
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Morise X, Braunstein P, Welter R. Enolphosphato−Phosphines: A New Class of P,O Ligands. Inorg Chem 2003; 42:7752-65. [PMID: 14632491 DOI: 10.1021/ic030032y] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The new bifunctional ligands Ph(2)PCH[double bond]CPh[OP(O)(OR)(2)] (1) (1a, R = Et; 1b, R = Ph) represent the first examples of P,O derivatives resulting from the association of a phosphine moiety and an enolphosphate group. The Z stereochemistry about the double bond provides a favorable situation for these ligands to act as P,O-chelates. Neutral and cationic Pd(II) complexes have been synthesized and characterized, in which 1a or 1b acts either as a P-monodentate ligand or a P,O-chelate, via coordination of the oxygen atom of the P[double bond]O group. In the latter case, it has been observed that phosphines 1a and 1b can display a hemilabile behavior, owing to successive dissociation and recoordination of the O atom. Competition experiments revealed that phosphine 1a presents a higher chelating ability than 1b, a feature ascribed to the more electrodonating properties of the ethoxy groups in 1a compared to the phenoxy groups in 1b. P,O-Chelation affords seven-membered metallocycles, which is unusual for P,O-chelates. Complexes trans-[PdCl(2)[Ph(2)PCH[double bond]C(Ph)OP(O)(OPh)(2)](2)] (2b), [PdCl[Ph(2)PCHdouble bond]C(Ph)OP(O)(OEt)(2)](mu-Cl)](2) (3a), [complex--see text] (8a'), and [complex--see text] (10a) have been structurally characterized. Interestingly, the seven-membered rings in 8a' and 10a adopt a sofa conformation with the double bond lying almost perpendicular to the plane containing the Pd, the two P, and the two O atoms.
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Affiliation(s)
- Xavier Morise
- Laboratoire de Chimie de Coordination and Laboratoire DECMET, UMR 7513 CNRS, Université Louis Pasteur, 4 rue Blaise Pascal, F-67070 Strasbourg Cedex, France.
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Chandrasekhar V, Azhakar R, Senthil Andavan GT, Krishnan V, Zacchini S, Bickley JF, Steiner A, Butcher RJ, Kögerler P. A phosphorus supported multisite coordinating tris hydrazone P(S)[N(Me)N=CH-C6H4-o-OH]3 as an efficient ligand for the assembly of trinuclear metal complexes: synthesis, structure, and magnetism. Inorg Chem 2003; 42:5989-98. [PMID: 12971769 DOI: 10.1021/ic034434h] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A phosphorus supported multisite coordinating ligand P(S)[N(Me)N=CH-C(6)H(4)-o-OH](3) (2) was prepared by the condensation of the phosphorus tris hydrazide P(S)[N(Me)NH(2)](3) (1) with o-hydroxybenzaldehyde. The reaction of 2 with M(OAc)(2).xH(2)O (M = Mn, Co, Ni, x = 4; M = Zn, x = 2) afforded neutral trinuclear complexes [P(S)[N(Me)N=CH-C(6)H(4)-o-O](3)](2)M(3) [M = Mn (3), Co (4), Ni (5), and Zn (6)]. The X-ray crystal structures of compounds 2-6 have been determined. The structures of 3-6 reveal that the trinculear metal assemblies are nearly linear. The two terminal metal ions in a given assembly have an N(3)O(3) ligand environment in a distorted octahedral geometry while the central metal ion has an O(6) ligand environment also in a slightly distorted octahedral geometry. In all the complexes, ligand 2 coordinates to the metal ions through three imino nitrogens and three phenolate oxygens; the latter act as bridging ligands to connect the terminal and central metal ions. The compounds 2-6 also show intermolecular C-H...S=P contacts in the solid-state which lead to the formation of polymeric supramolecular architectures. The observed magnetic data for the (s = 5/2)3 L(2)(Mn(II))(3) derivative, 3, show an antiferromagnetic nearest- and next-nearest-neighbor exchange (J = -4.0 K and J' = -0.15 K; using the spin Hamiltonian H(HDvV) = -2J(S(1)S(2) + S(2)S(3)) - 2J'S(1)S(3)). In contrast, the (s = 1)(3) L(2)(Ni(II))(3) derivative, 5, displays ferromagnetic nearest-neighbor and antiferromagnetic next-nearest-neighbor exchange interactions (J = 4.43 K and J' = -0.28 K; H = H(HDvV)+ S(1)DS(1) + S(2)DS(2)+ S(3)DS(3)). The magnetic behavior of the L(2)(Co(II))(3) derivative, 4, reveals only antiferromagnetic exchange analogous to 3 (J = -4.5, J' = -1.4; same Hamiltonian as for 3).
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