Synthesis and crystallographic characterisation of Mg(H 2 dhtp)(H 2 O) 5 ·H 2 O

O + + H 2 O „ + M ... \ H 5 O 2 + „ + M ...

Kinetics of HO 2 + HO 2 ! H 2 O 2 + O 2 : Implications for Stratospheric H

[1] The reaction HO2 + HO2 ! H2O2 + O2 (1) has been studied at 100 Torr and 222 K to 295 K. Experiments employing photolysis of Cl2/CH3OH/O2/N2 and F2/H2/O2/N2 gas mixtures to produce HO2 confirmed that methanol enhanced the observed reaction rate. At 100 Torr, zero methanol, k1 = (8.8 ± 0.9) 10 13 exp[(210 ± 26)/T] cm molecule 1 s 1 (2s uncertainties), which agrees with current recommendations...

Composition Space of the (CuO, (1)/(2)Nb(2)O(5))/(HF)(x)().pyridine/H(2)O System. Structure and Synthesis of [pyH(+)](2)[CuNb(2)(py)(4)O(2)F(10)](2-) and CuNb(py)(4)OF(5).

Single crystals of [pyH(+)](2)[CuNb(2)(py)(4)O(2)F(10)](2)(-) and CuNb(py)(4)OF(5) were synthesized in a (HF)(x)().pyridine/pyridine/water solution (150 degrees C, 24 h, autogeneous pressure) using CuO and Nb(2)O(5) as reagents. The compound [pyH(+)](2)[CuNb(2)(py)(4)O(2)F(10)](2)(-) contains clusters of [CuNb(2)(py)(4)O(2)F(10)](2)(-) anions linked through N-H(+).F hydrogen bonds to the [pyH(+...

4 . 5 H 2 O , ( Him / imidazole , 5 MeImH / 5 - methylimidazole and 2 , 2 ? - bipy / 2 , 2 ? - bipyridine )

N -tert -butyliminodiacetic acid (H2TEBIDA, compound 1) has been prepared and characterised by thermogravimetric analysis, FT-IR and NMR spectra, and X-ray crystallography (final R1 /0.04). The zwitterion H2TEBIDA 9 is intra -stabilised by a hydrogen bond, and H-bonded chains of zwitterions form supramolecular 2D bilayers with tert -Bu groups towards the external faces. Compounds [Cu(TEBIDA)(H2...

Charge Ordering and Optical Transitions of Liv 2 O 5 and Nav 2 O 5

We present the measurements of the polarized optical spectra of NaV2O5 and LiV2O5. In the energy range from 0.5 to 5.5 eV we observe similar peaks in the E ‖ a spectra of NaV2O5 and LiV2O5, which suggests similar electronic structure along the a axis in both materials. On the other hand, we find almost complete suppression of the peaks in σb of LiV2O5 around 1 and 5 eV. We attribute this suppre...