含有 N,N-二烷基-N'-苄基乙二胺和硫氰酸酯配体的铜 (II) 配合物中的分子结构和键异构化:晶体学、光谱学和 DFT 联合研究
摘要:
三种硫氰酸盐-Cu(II) 配合物的联合实验和计算研究,通式为 [Cu(Ln)2(NCS)]ClO4, (L1 = N,N-二甲基,N'-苄基-乙二胺, L2 = N, N-二乙基,N'-苄基-乙二胺,L3=N,N-二异丙基,N'-苄基-乙二胺)。通过物理化学和光谱方法合成和结构表征化合物。[Cu(L1)2(NCS)]ClO4 的 X 射线晶体学表明,铜原子通过四个胺 N 原子和末端 SCN− 离子的 N 原子的配位实现了扭曲的四角锥环境。为了研究空间拥挤对铜 (II) 中心硫氰酸盐配位模式的影响,对配合物进行了 DFT 计算。考虑了两种不同的情况,即当氮是供体原子并且硫是供体原子时。在所有情况下,N 配位异构体总是比 S 配位异构体更稳定。通过DFT/TD-DFT以及分子轨道分析对配合物的电子光谱进行了分析和分配。
Syntheses, crystal structures and solvatochromic properties of dinuclear oxalato-bridged copper(II) complexes
作者:Hamid Golchoubian、Razieh Samimi
DOI:10.1080/00958972.2016.1227439
日期:2016.10.1
measurements. The crystalstructures of [Cu2(L1)2(μ-ox)](ClO4)2⋅2(CH3CN) and [Cu2(L3)2(μ-ox)](ClO4)2 have been determined by single-crystal X-ray analysis. Solvatochromic behaviors were investigated in various solvents, showing positive solvatochromism. The effect of steric hindrance around the copper ion imposed by N-alkyl groups of the diamine chelates on the solvatochromism property of the complexes is discussed
Trisubstituierte Pyrimido/5,4-d/-pyrimidine zur Modulation der Multidrugresistenz, diese Verbindungen enthaltende Arzneimittel und Verfahren zu ihrer Herstellung
申请人:Dr. Karl Thomae GmbH
公开号:EP0645390A1
公开(公告)日:1995-03-29
Die Erfindung betrifft trisubstituierte Pyrimido[5,4-d]pyrimidine der allgemeinen Formel
in der
Ra, Rb und Rc wie im Anspruch 1 definiert sind,
deren Salze, insbesondere für die pharmazeutische Anwendung deren physiologisch verträgliche Salze, welche u.a. wertvolle pharmakologische Eigenschaften aufweisen, insbesondere bei der Chemotherapie eine sensibilisierende Wirkung auf resistente Tumore, deren Verwendung und Verfahren zu ihrer Herstellung.
Molecular structure and linkage isomerization in copper(II) complexes containing N,N-dialkyl-N′-benzylethylenediamine and thiocyanate ligands: a combined crystallographic, spectroscopic and DFT study
作者:Hamid Golchoubian、Sara Koohzad
DOI:10.1007/s11243-014-9805-1
日期:2014.4
the copper(II) center, DFT calculations are carried out on the complexes. Two different cases were considered, namely when nitrogen is the donor atom and when sulfur is the donor atom. In all cases, the N-coordinated isomers were always more stable than the S-coordinated ones. The electronic spectra of the complexes were analyzed and assigned by means of DFT/TD-DFT, together with molecular orbital analysis
三种硫氰酸盐-Cu(II) 配合物的联合实验和计算研究,通式为 [Cu(Ln)2(NCS)]ClO4, (L1 = N,N-二甲基,N'-苄基-乙二胺, L2 = N, N-二乙基,N'-苄基-乙二胺,L3=N,N-二异丙基,N'-苄基-乙二胺)。通过物理化学和光谱方法合成和结构表征化合物。[Cu(L1)2(NCS)]ClO4 的 X 射线晶体学表明,铜原子通过四个胺 N 原子和末端 SCN− 离子的 N 原子的配位实现了扭曲的四角锥环境。为了研究空间拥挤对铜 (II) 中心硫氰酸盐配位模式的影响,对配合物进行了 DFT 计算。考虑了两种不同的情况,即当氮是供体原子并且硫是供体原子时。在所有情况下,N 配位异构体总是比 S 配位异构体更稳定。通过DFT/TD-DFT以及分子轨道分析对配合物的电子光谱进行了分析和分配。
Molecular structure and nitrite-bonded study on copper(II) complexes of N,N-dialkyl,N′-benzyl-ethylenediamine; synthesis, spectroscopic characterization, X-ray structure, steric effect and density functional theory calculations
vibrational spectra of the complexes were assigned using DFT calculations. In support with the X-ray structure, the results reveal that νas(N–O) splits into two bands, with the separation increasing from [CuLMe(η2-ONO)2] through to [CuLtert-buty(η2-ONO)2]. That is at least partially dictated by steric factors within the molecules, imposed by the alkyl groups of the co-ligand. The UV–Vis absorption spectra