New supramolecular organotin(IV)/-copper(I) cyanides containing the unique {CuI2(μ-CN)2} building block

Directed Assembly of Cluster‐Based Supramolecules into One‐Dimensional Coordination Polymers

“…The intradimer antiferromagnetic coupling observed for 1 originates from a relatively short MnÀO* bond length (2.363 (4) ). [12] For 2, the roomtemperature m eff value of 4.89 m B remains constant to 50 K, when it decreases smoothly to 4.43 m B at 5 K, thus suggesting weak magnetic coupling interactions arising from the large diamagnetic bridging groups between the Mn III ions, as confirmed by the small q value (C = 3.78 emu mol À1 K À1 ; q = À0.79 K). Molecular field theory [15] was used to estimate the coupling interaction between the Mn III ions, and the data fit was obtained with g = 2.003(1) and zj' = À0.044(1) cm À1 , which indicates that 2 is a paramagnet.…”

“…The best fit gave: g = 1.937, J = À0.645 cm À1 , which are close to those reported for dimeric Mn III -salen-type complexes with antiferromagnetic interactions. [12] The MnÀO* (axial phenolic oxygen) bond length, stereoelectronic character of the ligand, and Jahn-Teller distortion present in the d 4 Mn 3+ ion play an important role in determining the type of magnetic coupling in the dimers. The intradimer antiferromagnetic coupling observed for 1 originates from a relatively short MnÀO* bond length (2.363 (4) ).…”

Characterization and Catalytic Activity of New Metal‐organic Frameworks Resulted from Self‐assembly of Ph3SnCl, K[Cu(CN)2] and Nitrogen Donor Ligands

“…The ethylenic group gives rise to one singlet band at δ 2.91. Also, there are four bands for bpe in the 13 C NMR at δ 124 for β carbon nuclei, at δ 150 for γ carbon nuclei, at δ 151 for α carbon nuclei and at δ 36 for the ethylenic carbons. 45,46 Thus, the NMR spectra confirm the presence of the cyanide ligand, the bipodal ligands as well as the Ph 3 Sn units as bridging groups.…”

“…The molecular weights of the residues obtained after complete thermolysis of all compounds are coincident with CuCN that was early reported to be stable under nitrogen atmosphere up to 800 ℃. 1 H NMR spectra of the MOFs 1-5 display broad-multiplet bands at δ 7.40-7.92 that are due to the protons of the phenyl groups, 40 while 13 C NMR spectra exhibit a singlet band at δ 137 due to the cyanide group and multiplet bands between δ 129.00-131.50 due to the phenyl groups 23 ( Tables 5 & 6). 1 H NMR and 13 C NMR spectra of the MOFs 1-5 display bands characteristic to the bipodal ligands (Tables 5 & 6 and Scheme 2). It worth mentioned that a singlet band at δ 1.05 is due to the protons of methyl group of the MOF 2.…”

“…[8][9][10][11][12] The copper cyanide system is particularly attractive from the viewpoint of structural engineering because of the previously reported versatility of {CuCN} n structural motifs in accommodating various ligand-imposed geometric requirements. [13][14][15][16][17] On the other hand, organometallic R 3 Sn ＋ (R＝Me or Ph) unit can act as a connecting moiety by axial anchoring to two donor atoms, exhibiting trigonal bipyramidal configuration, creating structures of high dimensionality. [18][19][20][21][22][23][24][25][26][27] It has been shown that organometallic R 3 E ＋ units (R＝Me, Et, n-propyl, n-butyl, phenyl; E＝Sn, Pb) can bridge the cyanometallate anions, M(CN) n q-, in much the same fashion as silver do in SPB 28 except that the greater complexity of the R 3 E ＋ units leads to complicated three-dimensional polymer.…”