The Vehicle, 1969, Vol. 11 no. 2

Vol. 11, No. 2 Table of Contents Short Story: The TripCharles Whitepage 4 PhotoDale Huberpage 5 A NightRoger Zulaufpage 6 Sixteen-year-old Students...NBpage 6 LostJim Biropage 6 The AmateurRoger Zulaufpage 7 ManRoger Zulaufpage 7 My CamelotRonald Garnerpage 7 The Rose and the BriarKenneth L. Folkertspage 9 Who Am I?Frank McKennedypage 10 PhotoDale Huberpage 11 Mr. Samuel ClemensLarry A. Millerpage 11 Lock OutAra Childspage 12 Excuse MeRoger Zulaufpage 12 On Shadows from a Candle \u2767Michael G. McKeepage 12 beginning of an endCaryl Dagropage 12 DrawingMADpage 13 We Ain\u27t Un HurJames Birchlerpage 13 Genesis II, 18 \u2767Michael G. McKeepage 13 Short Story: A Patent Leather PaleEleanor Aikenpage 14 hungry childRoger Zulaufpage 15 DrawingRoger Zulaufpage 15 PhotoRoger Digglepage 16 Do You Like The Rain?Linda Boltmanpage 17 Seasons ChangePerry J. Carterpage 17 PhotoDale Huberpage 19 Whistling TreesPam McKinneypage 19 PostscriptThomas W. Reapage 20 PhotoDale Huberpage 20https://thekeep.eiu.edu/vehicle/1020/thumbnail.jp

The Vehicle, 1969, Vol. 11 no. 2

Vol. 11, No. 2 Table of Contents Short Story: The TripCharles Whitepage 4 PhotoDale Huberpage 5 A NightRoger Zulaufpage 6 Sixteen-year-old Students...NBpage 6 LostJim Biropage 6 The AmateurRoger Zulaufpage 7 ManRoger Zulaufpage 7 My CamelotRonald Garnerpage 7 The Rose and the BriarKenneth L. Folkertspage 9 Who Am I?Frank McKennedypage 10 PhotoDale Huberpage 11 Mr. Samuel ClemensLarry A. Millerpage 11 Lock OutAra Childspage 12 Excuse MeRoger Zulaufpage 12 On Shadows from a Candle \u2767Michael G. McKeepage 12 beginning of an endCaryl Dagropage 12 DrawingMADpage 13 We Ain\u27t Un HurJames Birchlerpage 13 Genesis II, 18 \u2767Michael G. McKeepage 13 Short Story: A Patent Leather PaleEleanor Aikenpage 14 hungry childRoger Zulaufpage 15 DrawingRoger Zulaufpage 15 PhotoRoger Digglepage 16 Do You Like The Rain?Linda Boltmanpage 17 Seasons ChangePerry J. Carterpage 17 PhotoDale Huberpage 19 Whistling TreesPam McKinneypage 19 PostscriptThomas W. Reapage 20 PhotoDale Huberpage 20https://thekeep.eiu.edu/vehicle/1020/thumbnail.jp

(Ni-2), (Ni-3), and (Ni-2 + Ni-3): A Unique Example of Isolated and Cocrystallized Ni-2 and Ni-3 Complexes

Structural and magnetic characterization of compound {[Ni-2(L)(2)(OAC)(2)][Ni-3(L)(2) (OAc)(4)]) center dot 2CH(3)CN (3) (HL = the tridentate Schiff base ligand, 2-[(3-methylaminb-propylimino)-methyl]-phenol) shows that it is a rare example of a crystal incorporating a dinuclear Ni(II) compound, [Ni-2(L)(2)(OAc)(2)], and a trinuclear one, [Ni-3(L)(2)(OAC)(4)]. Even more unusual is the fact that both Ni (II) complexes, [Ni-2(L)(2)(OAc)(2)] (1) and [Ni-3(L)(2)(OAc)(4)(H2O)(2)] center dot CH2Cl2 center dot 2CH(3)OH (2), have also been isolated and structurally and magnetically characterized. The structural analysis reveals that the dimeric complexes [Ni-2(L)(2)(OAc)(2)] in cocrystal 3 and in compound 1 are almost identical-in both complexes, the Ni(II) ions possess a distorted octahedral geometry formed by the chelating tridentate ligand (L), a chelating acetate ion, and a bridging phenoxo group with very similar bond angles and distances. On the other hand, compound 2 and the trinuclear complex in the cocrystal 3 show a similar linear centrosymmetric structure with the tridentate ligand coordinated to the terminal Ni(II) and linked to the central Ni(II) by phenoxo and carboxylate bridges. The only difference is that a water molecule found in 2 is not present in the trinuclear unit of complex 3; instead, the coordination sphere is completed by an additional bridging oxygen atom from an acetate ligand. Variable-temperature (2-300 K) magnetic susceptibility measurements show that the dinuclear unit is antiferromagnetically coupled in both compounds (2J = -36.18 and -29.5 cm(-1) in 1 and 3, respectively), whereas the trinuclear unit shows a very weak ferromagnetic coupling in compound 3 (2J = 0.23 cm(-1)) and a weak antiferromagnetic coupling in 2 (2J = -8.7(2) cm(-1)) due to the minor changes in the coordination sphere