Magneto−Structural Relationships in a Series of Dinuclear Oxalato-Bridged (Diphenyldipyrazolylmethane)copper(II) Complexes
作者:Janet L. Shaw、Gordon T. Yee、Guangbin Wang、David E. Benson、Cagil Gokdemir、Christopher J. Ziegler
DOI:10.1021/ic048229t
日期:2005.7.1
series of oxalato-bridged dinuclear copper(II) complexes of the general formula [Cu2(Pz2CPh2)2(X)2(mu-C2O4)] (X = Cl- (1), NO3(-) (2), ClO4(-) (3); Pz2CPh2 = diphenyldipyrazolylmethane) or [Cu2(Pz(3m)2CPh2)2(H2O)2(mu-C2O4)](NO3)2 x H2O (4) (Pz(3m)2CPh2 = diphenylbis(3-methylpyrazolyl)methane) was synthesized where the axial ligand was systematically varied to study its effect on structure and magnetic
Syntheses, Structures, Spectroscopy, and Chromotropism of New Complexes Arising from the Reaction of Nickel(II) Nitrate with Diphenyl(dipyrazolyl)methane
作者:Natalie Baho、Davit Zargarian
DOI:10.1021/ic061311z
日期:2007.1.1
and [(dpdpm)2Ni(H2O)2][NO3]2 (4) (dpdpm = diphenyl(dipyrazolyl)methane, Ph2C(C3N2H3)2), have been prepared and characterized by IR and UV-vis-NIR spectroscopy and X-ray diffraction studies. X-ray studies have confirmed that complexes 1-4 all adopt variously distorted octahedral structures in the solid state, the largest distortions arising from the small bite-angle of the bidentate nitrate ligand
配合物[(dpdpm)Ni(2-NO3)2](1),[(dpdpm)Ni(2-NO3)(1-NO3)(CH3CN)](2),[(dpdpm)2Ni(1-NO3) )(H2O)] NO3(3)和[(dpdpm)2Ni(H2O)2] [NO3] 2(4)(dpdpm =二苯基(二吡唑基)甲烷,Ph2C(C3N2H3)2)的制备和表征红外和紫外-可见-近红外光谱和X射线衍射研究。X射线研究已经证实,配合物1-4均采用固态的各种八面体结构扭曲,最大的扭曲是由1和2中的双齿硝酸盐配体的小咬合角引起的。磁矩测量表明这些固体是具有两个不成对电子的顺磁性。溶液的1 H NMR数据表明,顺磁性保持在溶液中。1-4的吸收光谱显示了在350-1000 nm范围内的三个主要谱带,它们表示自旋(dd)从基态3A2g到激发态3T2g,3T1g(3F)和3T1g(3P)的跃迁。在大多数光谱中,在约700-800 nm处
Tuning the Coordination Geometry of Silver in Bis(pyrazolyl)alkane Complexes
作者:Daniel L. Reger、James R. Gardinier、Mark D. Smith
DOI:10.1021/ic0497174
日期:2004.6.28
steric crowding caused by (aryl)(2)C(pz)(2) ligands. In contrast, the complexes of the other two ligands, (Ag[(pz)(2)CHPh](2))(PF(6)).0.5CH(2)Cl(2) and (Ag[(pz)(2)CH(CH(2)Ph)](2))(PF(6)).CH(2)Cl(2), show normal tetrahedral geometry about the silver(I), also with no indication of silver(I)...pi arene interactions. All three new complexes have extended supramolecular structures supported by a combination
Single-component compounds with wide-range color-tunable ultralong organic phosphorescence
作者:Weitao Sun、Xianyin Dai、Haiyan Ge、Xianfeng Meng、Guiyun Duan、Yanqing Ge
DOI:10.1039/d3tc02426a
日期:——
several triphenylmethane derivative-based single-component phosphors that possess multicolor and ultralong lifetime (1.17 s) are reported. The emission color can be tuned from cyan (460 nm) to orange-red (626 nm) through altering the excitation wavelength. Theoretical calculation studies and X-ray crystal structures reveal that clustered molecules are the reasons for the color-tunable emission. Furthermore
彩色磷光或余辉具有巨大的理论意义和实用价值,但在单组分分子中开发新型颜色可调的超长有机磷光(UOP)仍然具有挑战性。本文报道了几种基于三苯甲烷衍生物的单组分荧光粉,它们具有多色和超长寿命(1.17 s)。通过改变激发波长,可以将发射颜色从青色 (460 nm) 调整为橙红色 (626 nm)。理论计算研究和 X 射线晶体结构表明,簇状分子是颜色可调发射的原因。此外,还进行了彩色防伪和紫外光(270至400 nm)的视觉传感。
Neutral and Cationic Palladium(II) Bis(pyrazolyl)methane Complexes
作者:Shoei Tsuji、Dale C. Swenson、Richard F. Jordan
DOI:10.1021/om990508e
日期:1999.11.1
The synthesis, structures, and reactivity of neutral and cationic Pd(II) complexes incorporating bis(pyrazolyl)methane ligands are described. The reaction of(CH3CN)(2)PdCl2 with the appropriate bis(pyrazoyl)methane in CH2Cl2 yields Ph2C(3-Bu-t-pz)(2)}PdCl2 (1) and Ph2C(pz)(2)}PdCl2 (2). Steric crowding associated with the Bu-t groups of 1 increases the puckering of the chelate ring (boat conformation) and retards the chelate ring inversion relative to 2. The reaction of Me2C(pz)(2)}PdMe2 (3) with [HNMe2Ph][B(C6F5)(4)] yields (Me2C(pz)(2)}PdMe(NMe2Ph)(+) (4a, B(C6F5)(4)(-) salt), while treatment of 3 with [H(OEt2)(2)][B3,5(CF3)(2)C6H3}(4)] yields (Me2C(pz)(2)}PdMe(OEt2)(+) (4b, B3,5-(CF3)(2)C6H3)(4)(-) salt). Complex 4a reacts with ethylene at -60 degrees C (CD2Cl2) to yield Me2C(pz)(2))PdMe(CH2=CH2)(+) (5, B(C6F5)(4)(-) salt) and free NMe2Ph. Cation 5 undergoes ethylene insertion at -10 degrees C and oligomerizes ethylene (1 atm) to predominantly linear internal C-8 to C-24 olefins (ca. 0.1 branches per 2 carbons) at 23 degrees C.