Vibrational analysis of some transition metal complexes with deprotonated and neutral malonamide

Influence of metal-coordinating comonomers on the coordination structure and binding in magnetic poly(ionic liquid)s

“…35 Other examples of M–O and M–N stretching modes have been reported in the 600–200 cm −1 region. 35–39 Therefore, the presence of this band is expected to be due to metal cation coordination with the acrylamide unit. Due to the intensity of the band in the cobalt and mixed series, it is possible that the tetrahedral [CoCl 4 ] 2− and [FeCl 4 ] − complex modes are overlapping in this region.…”

“…35 Other examples of M-O and M-N stretching modes have been reported in the 600-200 cm −1 region. [35][36][37][38][39] Therefore, the presence of this band is expected to be due to metal cation coordination with the acrylamide unit. Due to the intensity UV-vis spectroscopy of the solid MPIL copolymer films was performed to provide further insight into the metal species coordination structure, and the results are displayed in Fig.…”

Structural Trends and Vibrational Analysis of N,N,N′,N′−Tetramethylmalonamide Complexes Across the Lanthanide Series

“…Bünzli et al [17] 778 (w) 778 (m) ν asym CÀ NÀ C Socrates [18] 822 (m) ν 2 NO 3 out-of-plane bend Bünzli et al [17] 867 (s) 871 (m) ν sym CÀ NÀ C Socrates [18] 944 (sh, vw) δ CH 2 De Beukeleer and Desseyn [20] 960 (w) δ CH 2 De Beukeleer and Desseyn [20] 1035 (s) 1038 (vs) ν 1 NO 3 symmetric stretch Bünzli et al [17] 1060 (m) δ CH 3 Socrates [18] 1156 (s) ν asym O=CÀ CH 2 À C=O backbone Socrates [18] 1230 (sh, m) 1229 (w) ν 4 NO 3 in-plane bend Bünzli et al [17] 1263 (sh, m) Amide III, ν O=CÀ N Bellamy [19] 1291 (vs) ν 4 NO 3 in-plane bend Rapko et al [8] 1304 (sh, s) 1307 (w) ν 4 NO 3 in-plane bend Rapko et al [8] 1328 (w) ν 4 NO 3 in-plane bend Rapko et al [8] 1390 (sh, m) 1393 (w) ν NÀ CH 3 Bellamy [19] 1412 (s) 1421 (m) 1432 ν 3 NO 3 asymmetric stretch Rapko et al [8] 1434 Bellamy [19] 2976 (w) ν CÀ H (CH 3 ) Bellamy [19] isostructural series ranging from 2.3959 Å (Eu) down to 2.3349 Å (Er), in conjunction with slightly elongated LnÀ O nitrato distances of 2.5585-2.5113 Å, paralleling the trend observed for Ln(trans-TMMA) 2 (NO 3 ) 3 .…”

Structural Trends and Vibrational Analysis of N,N,N′,N′- Tetramethylmalonamide Complexes Across the Lanthanide Series

“…Amide IV, N-C=O def Bellamy [24] 677 (m) 680 (m) ν5 NO3 Bünzli et al [22] 708 (m) 698 δout-of-plane H3C-N-CH3 DFT 731 (s) 736 (m) ν6 NO3 Bünzli et al [22] 778 (w) 778 (m) νasym C-N-C Socrates [23] 822 (m) ν2 NO3 out-of-plane bend Bünzli et al [22] 867 (s) 871 (m) νsym C-N-C Socrates [23] 944 (sh, vw) δ CH2 De Beukeleer and Desseyn [25] 960 (w) δ CH2 De Beukeleer and Desseyn [25] 1035 (s) 1038 (vs) ν1 NO3 symmetric stretch Bünzli et al [22] 1060 (m) δ CH3 Socrates [23] 1156 (s) νasym O=C-CH2-C=O backbone Socrates [23] 1230 (sh, m) 1229 (w) ν4 NO3 in-plane bend Bünzli et al [22] 1263 (sh, m) Amide III, ν O=C-N Bellamy [24] 1291 (vs) ν4 NO3 in-plane bend Rapko et al [8] 1304 (sh, s) 1307 (w) ν4 NO3 in-plane bend Rapko et al [8] 1328 (w) ν4 NO3 in-plane bend Rapko et al [8] 1390 (sh, m) 1393 (w) ν N-CH3 Bellamy [24] 1412 (s) 1421 (m) 1428 O=C-CH2-C=O def coupled to ν C=O DFT 1434 (vs) 1437 (sh) 1438 O=C-CH2-C=O def coupled to ν C=O DFT 1451 (sh, s) 1460 (m) ν3 NO3 asymmetric stretch Rapko et al [8] 1470 (sh, m) ν3 NO3 asymmetric stretch Rapko et al [8] Bellamy [24] 2976 (w) ν C-H (CH3) Bellamy [24] Ln(cis-TMMA)2(NO3)3…”