ChemInform Abstract: PHOTOSOLVOLYSE‐MECHANISMUS VON REINICKE‐SALZ IN ALKOHOLISCHEN LOESUNGEN

Lodzinska, Alicja; Szczepanski, Stefan

doi:10.1002/chin.197305347

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“…The IR spectra of compounds containing the Rei neckate analogue anions [Cr(NCS) 4 (Phen)] -are reported in detail in the literature [41,[60][61][62]. The CN stretching frequencies ν(CN) are located between 2080-2100 cm -1 , the CS stretching frequencies ν(CS) between 820-850 cm -1 , respectively, and are in accor dance with published values [41,[60][61][62][63][64][65].…”

Section: Resultsmentioning

confidence: 57%

Low-melting salts with the [CrIII(NCS)4(1,10-phenanthroline)]− complex anion: Syntheses, properties, and structures

2012

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Four new low melting salts, "Ionic Liquids" consisting of the [Cr III (NCS) 4 (Phen)] − complex monoanion and imidazolium based cations A, with A = 1 ethyl 3 methylimidazolium (EMIm), 1 butyl 3 methylimidazolium (BMIm), 1,3 dimethyl 2,4,5 triphenylimidazolium (DML), and 1,2,3,4,5 pentamethyl imidazolium (PMIm), were investigated. Single crystal X ray investigations established the structures of the four compounds. (EMIm)[Cr(NCS) 4 (Phen)] (I): triclinic, a = 8.1382(6), b = 10.4760(8), c = 16.003(1) Å, α = 90.330(4)°, β = 94.759(4)°, γ = 107.305(4)°, Z = 2, R 1 (F)/wR 2 (F 2 ) = 0.0650/0.1770; (BMIm)[Cr(NCS) 4 (Phen)] (II): triclinic, a = 8.5545(4), b = 9.8620(4), c = 16.6762(6) Å, α = 92.503(2)°, β = 97.517(2)°, γ = 91.249(2)°, Z = 2, R 1 (F)/wR 2 (F 2 ) = 0.0393/0.0848; (DML)[Cr(NCS) 4 (Phen)] ⋅ C 3 H 6 O (III): triclinic, a = 11.0475(9), b = 13.589(1), c = 14.582(1) Å, α = 83.013(4)°, β = 87.116(4)°, γ = 70.333(5)°, Z = 2, R 1 (F)/wR 2 (F 2 ) = 0.0407/0.1023; (PMIm)[Cr(NCS) 4 (Phen)] ⋅ C 3 H 6 O (IV): orthorhombic, Pbca, a = 17.379(1), b = 16.514 (1), c = 22.304(1) Å, Z = 8, R 1 (F)/wR 2 (F 2 ) = 0.0460/0.1107 (in addition III and IV contain co crystallized acetone molecules). Each compound was characterized by elemental analysis, NMR, IR, und UV⎯Vis spectroscopy. Magnetic properties were derived from NMR investigations (EVANS method). All four compounds are paramagnetic with effective magnetic moments of spin only Cr III . Melting points were obtained from DSC measurements. All melting points are higher than required for "Ionic Liquids", but nevertheless "low" for molten salts.

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