Cobalt-manganese-nickel oxalates micropolyhedrons were successfully fabricated by a room temperature chemical co-precipitation method. Interestingly, the Co0.5Mn0.4Ni0.1C2O4*nH2O micropolyhedrons and graphene nanosheets have been successfully applied as the positive and negative electrode materials (a battery type Faradaic electrode and a capacitive electrode, respectively) for flexible solid-s...

Looping transitions occur in field-swept electron magnetic resonance spectra near avoided crossings and involve a single pair of energy levels that are in resonance at two magnetic field strengths, before and after the avoided crossing. When the distance between the two resonances approaches a linewidth, the usual simulation of the spectra, which results from a linear approximation of the depen...

?18 Composition, &c. Oxalate of lime nucleus, with uric acid and oxalate of lime alternating. Colour, brown and fawn. Structure, laminated. Uric acid nucleus, with uric acid and a little urate of ammonia. Colour, light fawn, Structure, non-laminated, soft. Uric acid throughout. Colour, fawn. Structure, indistinctly laminated. Urate of lime throughout. Colour, grey. Structure, compact, non-lamin...

The crystal structure of the title compound, C(4)H(10)N(3)O(2) (+)·C(2)HO(4) (-), is stabilized by N-H⋯O and O-H⋯O hydrogen bonds. The anions are connected by an O-H⋯O hydrogen bond, leading to C(5) chain extending along c axis. The cations are dimerized around the corners of the unit cell, leading to an R(2) (2)(14) ring motif. This leads to a cationic mol-ecular aggregation at x = 0 or 1 and ...

The β-diketiminato nickel(I) complex K2[L(tBu)Ni(I)(N2(2-))Ni(I)L(tBu)] reacts with CO2 via reductive disproportionation to form CO and CO3(2-) containing products, whereas after employment of the Ni(I) precursor [L(tBu)Ni(I)(N2)Ni(I)L(tBu)] reductive coupling of CO2 was observed giving an oxalate bridged dinickel(II) complex. The addition of KC8 to the carbonate and oxalate compounds formed le...

An ion chromatographic and an enzymatic method for determination of oxalic acid in urine were compared on the basis of reliability and practicability. Both methods displayed a within-run imprecision of under 5% and a total imprecision of under 10%. The mean recovery of 0.2 mmol/l sodium oxalate lay close to 100% for both methods. After 80 parallel determinations, both methods produced statistic...