Journal
ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE
Volume 67, Issue -, Pages M48-U586Publisher
WILEY-BLACKWELL
DOI: 10.1107/S1600536810050403
Keywords
-
Categories
Funding
- Tulane University
- Division Of Chemistry [0845829] Funding Source: National Science Foundation
Ask authors/readers for more resources
The structure of the title compound, [Ni(C(6)H(16)N(2))(2)]Br(2) or [Ni(Et(2)en)(2)]Br(2) (Et(2)en is asymmetric N,N-diethylethylenediamine), containing an Ni(II) atom (site symmetry 1) in square-planar NiN(4) coordination, is described and contrasted with related structures containing Ni(II) in octahedral coordination with axial X(-) ligands (X(-) = variable anions). The dialkylated N atom has an appreciably longer bond length to the Ni(II) atom [1.9666 (13) angstrom] than does the unsubstituted N atom [1.9202 (14) angstrom]. The Ni-N bond lengths in [Ni(Et(2)en)(2)] Br(2) are significantly shorter than corresponding values in tetragonally distorted [Ni(Et(2)en)(2)X(2)] compounds (X = (-)O(2)CCF(3), OH(2), or (-)NCS), which have a triplet ground state. The electronic configuration in these axially ligated [Ni(Et(2)en)(2)X(2)] compounds populates the metal-based d(x)(2) (2)(-y) orbital, which is Ni-N antibonding in character. Each Et2en ligand in each [Ni(Et(2)en)(2)](2+) cation forms a pair of N-H center dot center dot center dot Br hydrogen bonds to the Br(-) anions, one above and below the NiN(4) square plane. Thus, a ribbon of alternating Br(-) pairs and [Ni(Et(2)en)(2)](2+) cations that are canted at 65 degrees relative to one another is formed by hydrogen bonds.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available