Back to Search
Start Over
Thiosemicarbazone derivatives of nickel and copper: the unprecedented coordination of furan ring in octahedral nickel(ii) and of triphenylphosphine in three-coordinate copper(i) complexesElectronic supplementary information (ESI) available. CCDC reference numbers 735088(1), 737163(2), 771690–771692(3–5), 783926(7), 713436(8) and 771693. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c0dt01291b
- Source :
-
Dalton Transactions: An International Journal of Inorganic Chemistry . Mar2011, Vol. 40 Issue 13, p3219-3228. 10p. - Publication Year :
- 2011
-
Abstract
- The influence of substituents at the C2carbon of N1-substituted thiosemicarbazones, {C4H3X–C2(CH3)N3–N2H–C1(S)N1HR2} (X = O, S) on the geometry of nickel(ii) complexes has been investigated. The presence of a methyl group at the C2position of 2-acetylfuran-N1-substituted thiosemicarbazones {(C4H3O)–C2(CH3)N3–N2H–C1(S)N1HR2, R2= CH3, HaftscN–Me; C2H5, HaftscN–Et; C6H5, HaftscN–Ph} induces unusual coordination by the furan ring and yielded high spin octahedral nickel(ii) complexes, [Ni(κ3-O, N3, S-aftscN–R2)2], CH31, C2H52, and 2[Ni((κ3-O, N3, S-aftscN–Ph)2] 3(μeff= 2.98, 1; 2.96, 2; 2.92, 3). With 2-acetylthiophene-N1-substituted thiosemicarbazones, {(C4H3S)-C2(CH3)N3-N2H–C1(S)N1HR2, R2= CH3, HattscN–Me; C2H5, HattscN–Et; C6H5, HattscN–Ph}, N3, S chelated low spin transsquare planar complexes, {[Ni(κ3-O, N3, S-attscN–R2)2], R2= CH3, 4; C2H5, 5; C6H5, 6} with pendant thiophene rings have been obtained. The bigger sized sulfur atoms of the thiophene rings form short intramolecular contacts with the deprotonated hydrazinic nitrogen atoms (SN2) inhibiting its lability for possible coordination to nickel(ii). Complexes have one independent molecule (1) or two independent molecules (2, 3) in their respective crystal lattices. The simultaneous presence of methyl groups at the C2and N1atoms of 2-acetylthiophene-N1-methylthiosemicarbazone (HattscN–Me) have facilitated the binding of triphenylphosphine in three-coordinate copper(i) halide complexes, [CuX(η1-S-HattscN–Me)(Ph3P)] (X, Br, 7; Cl, 8), which represent an unusual donor set of ligands, namely, triphenylphosphine, sulfur of a thio-ligand and a halide. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 40
- Issue :
- 13
- Database :
- Academic Search Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 59453363
- Full Text :
- https://doi.org/10.1039/c0dt01291b