Manganese(II) coordination polymers with bis(5-tetrazolyl)methane: Synthesis, structure and magnetic properties

Energetic Salts Based on Monoanions of N,N‐Bis(1H‐tetrazol‐5‐yl)amine and 5,5′‐Bis(tetrazole)

“…Solid-state 13 C NMR spectroscopy was used as an effective technique to determine the structure of the products that were obtained from the metathesis reactions of biguanidinium sulfate with barium iminobis(5-tetrazolate) (BaBTA). Thus, the structure was determined as an HBTA salt by the comparison of its solid-state 13 C NMR spectroscopy with those of ammonium 5-(tetrazol-5-ylamino)tetrazolate lic coordination compounds [62][63][64][65] and polymers, [66,67] theoretical calculations and physical predictions, [68][69][70][71][72] functional ionic liquids, [73][74][75][76][77] and so on. [78,79] Recently, the single-crystal X-ray structure of H 2 BTA was reported.…”

“…[80] Some metal-containing H 2 BTA derivatives have been readily obtained because a planar H 2 BTA functional heterocycle contains nine nitrogen electron-donating atoms. [62][63][64][65][66][67][80][81][82][83][84] On the other hand, the acidic protons of H 2 BTA enable the formation of the corresponding salts by reactions with nitrogen-rich bases. Although there are several reports of salts of H 2 BTA, most of them appear in patents or unpublished documents.…”

“…5‐N ‐ Substituted tetrazoles,30 for example, 5‐aminotetrazoles,31 5,5′‐azotetrazolates,32 bis(1 H ‐tetrazol‐5‐yl)amine (H 2 BTA),4, 33 5,5′‐bis(1 H ‐tetrazolyl)hydrazine (BTH),34 and 5‐azido‐1 H ‐tetrazole6 have nitrogen contents greater than 82 %, and many of their derivatives that bear tetrazole group(s) are weakly acidic and thus have constituted anionic moieties in energetic salts 4. 31, 35, 36 Our recent communications4, 37 about dianionic salts of N , N ‐bis(1 H ‐tetrazol‐5‐yl)amine (Scheme ) have aroused wide interest in many applications, such as high‐energetic materials,31, 33, 35, 36, 38–61 metallic coordination compounds62–65 and polymers,66, 67 theoretical calculations and physical predictions,68–72 functional ionic liquids,73–77 and so on 78. 79…”

A rare alb-4,8-Cmce metal–coordination network based on tetrazolate and phosphonate functionalized 1,3,5,7-tetraphenyladamantane

“…The magnetic behavior is consistent with a Mn(II) linear pentanuclear complex exhibiting weak antiferromagnetic coupling mediated by the tetrazolate bridges. [78][79][80] Fig. 3 shows the temperature dependence of the x M T product for compound 1.…”

“…50 K) with the Fisher expression (based in the H = 2JSS i S i+1 Hamiltonian) for a regular chain of classical spins (S = 5/2). 79,84 We took this decision since the other attempts failed, the cluster is rather large (pentanuclear), and in the high temperature region -when the magnetic correlation is small -the magnetic behavior of the cluster and that of the chain are expected to be very similar. Best fit parameters are g = 1.98, J = 22.01 cm 21 and R = 1.88 6 10 25 (R is the agreement factor defined as S i [(x M T) obs(i) 2 (x M T) calc(i) ] 2 /S i [(x M T) obs(i) ] 2 ).…”