Poly(benzotriazolyl)borates—I. ligand synthesis and characterization

Synthesis and Properties of Poly(pyrazolyl)borate and Related Boron-Centered Scorpionate Ligands. Part A: Pyrazole-Based Systems

“…IpcTp [304] B N N N N N N 302 [HB(camphpz)3] - [182] B N N N N N H N 303 [B(camphpz)4] - [182] [185]. The achiral hexadentate parent ligand [Tp Py ]has been extensively studied [25,186,187] and the addition of 2-pyridyl substituents to the C 3 position of the pyrazolyl rings, such that each arm of the ligand is now a bidentate chelate, results in completely different coordination behaviour from the simpler terdentate Tp x ligands.…”

The final unadorned tris(azolyl)borate: finishing what Trofimenko started in 1966

“…While a handful of accounts have reported a variant, tris(1,2,3-benzotriazolyl)borate, neither simple HCs, nor CPs have been crystallographically characterized with that tripodal ligand. [29][30][31][32][33][34] We sought to rectify this glaring omission and synthesize tris(1,2,3-triazolyl)borate and its first complexes.…”

Linkage lsomerism in bis[hydrotris(1,2,4-triazolyl)borato]zinc from a molecular chelate complex to a three-dimensional co-ordination polymer

“…A single-crystal X-ray study revealed that the fast crystallizing cubic platelets have the formula [Zn{HB(C,H,N3),},]~6H,O with the orthorhombic space group Pmcn and a = 20.98 (1), b = 10.734 (6), c = 11.747(3) A and Z = 4. The borate acts as a tridentate chelate through the endodentate nitrogens to form zinc co-ordination octahedra embedded in layers of water molecules.…”

“…The co-ordination polymer of the analytical formula [Zn{HB(C,H,N,),},]-ca. 1 .5H,O crystallizes in the monoclinic space group C2/c with a = 15.975 (13), b = 8.900 (6), c = 17.930 (15) A, p = 121.36 (5)' and Z = 4.…”

“…~ Modifications of these ions, where the pyrazolyl rings are replaced by e.g. ( 1,2,4)-triazolyl or tetrazolyl, have been mentioned only briefly, however, 1 * 5 * 6 or not at all. 7 The ambidentate polytriazolyl-and tetrazolyl-borate anions, [HB(C,H2N3),] -, and [H,B(CHN,),] -, with their multiple bonding centres would be expected to have an interesting co-ordination chemistry.…”