106325-28-4

Upstream product

• 876-53-9 1,3-dibromoadamantane 
• 106325-31-9 1,3-bis(2,2-dibromoethyl)adamantane 

Relevant academic research and scientific papers

Mixed-ligand hydroxocopper(II)/pyridazine clusters embedded into 3D framework lattices

Rational combination of pyridazine, hydroxo and carboxylate bridging ligands led to the assembly of three types of mixed-ligand polynuclear Cu(ii) clusters (A: [Cu2(μ-OH)(μ-pdz)(μ-COO)]; B: [Cu 4(μ3-OH)2(μ-pdz)2]; C: [Cu5(μ-OH)2(μ-pdz)4(μ-COO) 2(μ-H2O)2]) and their integration into 3D framework structures. Mixed-ligand complexes [Cu2(μ-OH){TMA}(L) (H2O)] (1), [Cu4(μ3-OH)2{ATC} 2(L)2(H2O)2]·H2O (2) [Cu4(μ3-OH)2{TDC}3(L) 2(H2O)2]·7H2O (3) (L = 1,3-bis(pyridazin-4-yl)adamantane; TMA3- = benzene-1,3,5- tricarboxylate, ATC3- = adamantane-1,3,5-tricarboxylate, TDC 2- = 2,5-thiophenedicarboxylate) and [Cu5(μ-OH) 2{X}4(L)2(H2O)2] ·nH2O (X = benzene-1,3-dicarboxylate, BDC2-, n = 5 (4) and 5-hydroxybenzene-1,3-dicarboxylate, HO-BDC2-, n = 6 (5)) are prepared under hydrothermal conditions. Trigonal bridges TMA3- and ATC3- generate planar Cu(ii)/carboxylate subtopologies further pillared into 3D frameworks (1: binodal 3,5-coordinated, doubly interpenetrated tcj-3,5-Ccc2; 2: binodal 3,8-coordinated tfz-d) by bitopic pyridazine ligands. Unprecedented triple bridges in 1 (cluster of type A) support short Cu...Cu separations of 3.0746(6) A. The framework in 3 is a primitive cubic net (pcu) with multiple bis-pyridazine and TDC2- links between the tetranuclear nodes of type B. Compounds 4 and 5 adopt uninodal ten-coordinated framework topologies (bct) embedding unprecedented centrosymmetric open-chain pentanuclear clusters of type C with two kinds of multiple bridges, Cu(μ-OH)(μ-pdz)2Cu and Cu(μ-COO)(μ-H2O)Cu (Cu...Cu distances are 3.175 and 3.324 A, respectively). Magnetic coupling phenomena were detected for every type of cluster by susceptibility measurements of 1, 3 and 4. For binuclear clusters A in 1, the intracluster antiferromagnetic exchange interactions lead to a diamagnetic ground state (J = -17.5 cm-1; g = 2.1). Strong antiferromagnetic coupling is relevant also for type B, which consequently results in a diamagnetic ground state (J1 = -110 cm-1; J2 = -228 cm-1, g = 2.07). For pentanuclear clusters of type C in 4, the exchange model is based on a strongly antiferromagnetically coupled central linear trinuclear Cu 3 group (J1 = -125 cm-1) and two outer Cu centers weakly antiferromagnetically coupled to the terminal Cu ions of the triad (J2 = -12.5 cm-1). the Partner Organisations 2014.

1,3-diethynyladamantane and methods of polymerization thereof

1,3-Diethynyladamantane and a method of forming same by brominating adamantane to yield 1,3-dibromoadamantane, subjecting vinyl bromide to Friedel-Crafts alkylation with the 1,3-bidromoadamantane to form 1,3-bis(2,2-dibromoethyl)adamantane and subjecting the 1,3-bis(2,2-dibromoethyl)adamantane to dehydrohalogenation to yield the 1,3-diethynyladamantane. 1,3-Diethynyladamantane can be polymerized to produce strong, thermally stable resins suitable for advanced aerospace structural applications, as matrices for carbon-carbon systems and as electrical insulators. It can also be co-polymerized with 1-ethynyladamantane to yield similarly useful resins.