Beiträge zum Studium der Ammoniakate einfacher Salze. Ammoniakate der Zinksalze

N-H(N)…S Bonding in Tetrahedral [Zn(NCS)2L]0 Complexes (L = MexH2-xN(CH2)2NH2-yMey, x, y = 0 - 2)

“…, and is thus the most H-bonded of the S atoms in 5. This is reflected in the value of U eq [S (12)], which is significantly smaller than the U eq of the other three S atoms (Table 2). Finally, S(21) is engaged only in a single, weak bond to H(26 A'') at ∼3.07 A Ê , N±H±S ∼125°; the nearest other H(N) atom, H(16 C), is 3.76 A Ê away (N±H±S ∼164°) and can be discounted as effective.…”

“…8 A the d, } regression line differs only slightly from the d, } line and is not shown separately: }/ } = 0.969 d 0.038 is 1.000 for d = 2.3 A Ê and 1.018 for d = 3.7 A Ê . 12) Linear regression of the } long on the } short angles in the nine bifurcated bonds results in } long = 205.3 ± 0.640 } short , r 2 = 0.706, which is a statistically significant correlation (P = 0.004).…”

“…The resulting clear solution of Zn(NCS) 2 was decanted from the precipitated BaSO 4 and used in subsequent manipulations. Alternatively, EtOH solutions of zinc nitrate and KSCN were combined in stoichiometric proportions, the insoluble KNO 3 was filtered off and the product was allowed to crystallize from the filtrate [12]. The title compounds were prepared by extending the procedure described in ref.…”

“…However, if they are correlated (as the } vs. d subplot in Fig. 8 A and statistical evidence 12) seem to indicate), then the elliptic domains represent, how ever crudely, the respective areas in which the correlated d, } points for bifurcated bonds would be expected to fall (cf. also Fig.…”