Poly[(μ4-biphenyl-2,4′-dicarboxylato-κ5O2:O2′:O4:O4,O4′)zinc]

Poly[μ2-aqua-diaqua­(μ8-3-nitro­benzene-1,2-dicarboxylato)(μ6-3-nitro­benzene-1,2-dicarboxylato)tetra­sodium]

In the title layered coordination polymer, [Na(4)(C(8)H(3)NO(6))(2)(H(2)O)(3)](n), the doubly deprotonated 3-nitro-benzene-1,2-dicarboxyl-ate ligands exhibit μ(8)- and μ(6)-coordination modes to the sodium ions, generating sheets lying parallel to (001). The coordination environments of the sodium ions are distorted octa-hedral, distorted trigonal-bipyramidal and moncapped trigonal-prismatic. O...

Biphenyl-3,3′,4,4′-tetra­amine

The title compound, C(12)H(14)N(4), has a crystallographically imposed centre of symmetry. Inter-molecular N-H⋯N hydrogen bonds between amino groups link adjacent mol-ecules into a three-dimensional network where ten-membered hydrogen-bonded rings are observed.

Biphenyl-4-carbaldehyde azine

The complete mol-ecule of the title compound, C(26)H(20)N(2), is generated by crystallographic inversion symmetry. The terminal phenyl ring is twisted by 19.2 (1)° with respect to the adjacent phenyl-ene ring.

Toxicological Review of Biphenyl

Diammonium biphenyl-4,4′-disulfonate

In the title salt, 2NH(4) (+)·C(12)H(8)O(6)S(2) (2-), the dianion has crystallographic inversion symmetry. A three-dimensional framework is formed from primary hydrogen-bonded sheet structures comprising ammonium N-H⋯O(sulfonate) inter-actions and is linked peripherally through the biphenyl residues of the anions. This open framework has 43 Å(3) solvent-accessible voids.